STEM (Science, Technology, Engineering & Mathematics) | Nebraska Extension in Pawnee County | Nebraska Extension

Science, Technology, Engineering & Mathematics (STEM)

STEM

This department gives 4-H members an opportunity to display their knowledge and skills gained relating to computers, drones, electricity, energy, geospatial, robots, rockets, drones, welding and woodworking. Through participation in this department, 4-H members will present their knowledge in these areas as they relate to STEM.

For help getting started with this project contact your county Extension office.

Area Rules – STEM.

The name and county of each 4-H should appear separately on the back of each board, poster or article and on the front cover of the notebooks so owner of the exhibit may be identified if the entry tag is separated from the exhibit.
Demonstration boards should include an overall title for the display, plus other necessary labeling.
Reports should be written using the scientific method whenever possible: 1. Hypothesis 2. Research 3. Experiment 4. Measure 5. Report or Redefine Hypothesis. All reports should be computer generated and enclosed in a clear plastic cover. The reports should be attached securely to the display.
Please refer to the General Rules for the policy regarding firearms, items with a blade, and other related items.
Please refer to the General Rules for the policy regarding use of copywritten images.
Premier 4-H Science Award is available in this area.
Team Entries: To qualify for entry at the Nebraska State Fair for any team exhibit, the exhibit and all supporting information must clearly be the work of a team instead of an individual, and must have at least 50% of all team members enrolled in 4-H. Additionally, all enrolled 4-H members on the team should complete and attach an entry tag to the materials. A supplemental page documenting the individual contributions to the project should be included. The entry will be judged as a team, with all team members receiving the same ribbon placing.
State Fair qualified videos, presentations and other electronic exhibits should be submitted to https://go.unl.edu/2025nesfstem by August 15th, 2025. Videos can be uploaded to a video streaming application and exhibitors MUST provide a hard copy QR code for viewing. 4-H members are encouraged to test their codes or links on several devices to check for appropriate permissions for public viewing
Posters in this department can be any size up to 28 inches by 22 inches when ready for display. Example: trifold poster boards are not 28 inches by 22 inches when fully open for display.
Several classes require a display board which should be a height of 24 inches and not to exceed 1/4-inch thickness. A height of 24 7/8 inches is acceptable to allow for the saw kerf (width) if two 24-inch boards are cut from one end of a 4 foot by 8-foot sheet of plywood. Nothing should be mounted within 3/4 inch of the top or bottom of the board. (Example: Woodworking & Electricity.)
1. Fabricated boards such as plywood, composition board, or particle-type lumber may be used for demonstration displays.
2. Demonstration boards should be sanded and finished to improve their appearance. The finish on a demonstration board will be judged as a woodworking exhibit.
3. Demonstration boards should include an overall title for the display, plus other necessary labeling.
4. Reports should be written using the scientific method whenever possible (1. Hypothesis 2. Research 3. Experiment 4. Measure 5. Report or Redefine Hypothesis). All reports should be computer generated and enclosed in a clear plastic cover. The reports should be attached securely to the display.
If the project (i.e. picnic tables, wishing wells, swings, chairs, bridges, doghouses, etc.) is designed to be used outside, it will be displayed outside.
All outside projects MUST have entry tag and supporting information placed in a protective bag to prevent damage from weather events such as rain and be ATTACHED to projects with string, zip ties, etc.

Department H – Division 865 – STEM Model Building
Items in this category are not eligible for the State Fair. Entries must have a completed model information sheet. All models must be mounted on a firm board of wood, heavy cardboard, or in an acrylic case.
				Division	Class	Pay	Purple	Blue	Red	White
Dept.	Division	Class No.	Class Description	865	All Classes	1	$6	$4	$2	$1
H	865	900	Level 1 Model – Build a simple model that is a snap together type or model which requires limited glue or paint. Use only parts furnished in the kit.
H	865	901	Level 2 Model – Build a model that requires glued assembly and exterior painting. Use only parts furnished with the kit.
H	865	902	Level 3 Model – Build a model that requires glued construction and painted on all surfaces other than chrome, glass, and tires. Must have at least one complex element such as moving parts (i.e. doors, hood, sail rigging, etc.) or detailed painting (i.e. camouflage on airplanes, etc.). Additional parts not furnished with the model may be added.
H	865	903	Level 4 Model – Build a self-designed model or diorama. Models should have design plans included. Dioramas will be judged on accuracy of theme, appearance, construction, and audience appeal.
Department H – Division 860 – STEM Computers
				Division	Class	Pay	Purple	Blue	Red	White
Level 1				860	900-903 & 001-002	1	$6	$4	$2	$1
Dept.	Division	Class No.	Class Description	860	003-008	2	$7	$5	$3	$1
H	860	900	Computer Art Poster – Exhibit should be created on 8 /12” x 11” paper using commercially available graphics software package & color or black & white paper. 4-H theme of your choice suggested.
H	860	901	Greeting Card – Develop a series of 4 to 6 greeting cards, each for a different occasion. Exhibit should be created on 8 ½” x 11” paper using commercially available graphics programs & a color or black & white paper. The cards should vary in fold & design. Tell me what software package was used on the back. Prefabricated cards from commercially available card programs will NOT be accepted. Put cards in a protective plastic cover or notebook.
H	860	902	Booting Up Poster – Create a poster on a lesson learned in Booting Up, Unit 1. Examples might include hardware, software programs, how to take care of a computer & operating systems.
Computer Mysteries: Level 2
H	860	001	Computer Application Notebook(SF277) – 4-H exhibitor should use computer application to create a graphic notebook utilizing computer technology. 4-H’er may create any of the following: greeting card (5 different cards such as a birthday, wedding, anniversary, sympathy get well or other); a business card (3 cards for 3 different individuals and businesses); menu (minimum of 2 pages including short description of foods and pricing); book layout (I-book); promotional flyer (3 flyers promoting 3 different events); newsletter (minimum 2 pages); or other: examples such as precision farming or family business logo etc. This exhibit consists of a notebook (8.5x11 inches) which should include a detailed report describing: (a) the task to be completed, (b) the computer application software required to complete the task, (c) specific features of the computer application software necessary for completing the task. You will also need a print out of your project. Project may be in color or black and white.
H	860	002	Produce a Computer Slideshow Presentation (SF276) – Using presentation software a 4-H Exhibitor designs a multimedia computer presentation on one topic related to youth. A notebook with a printout of all the slides should be submitted. The slideshow should include a minimum of 10 slides and not more than 25. Incorporate appropriate slide layouts, graphics, animations, and audio (music or voice and transition sounds do not count). Each slide should include notes for a presentation. All slideshows must be uploaded. State fair qualified entries should be submitted to https://go.unl.edu/2024nesfset by August 10th, 2024. Or entries can be uploaded to a cloud sharing service and exhibitors MUST provide a hard copy of QR code for viewing. Exhibitors should test their codes or links on several devices to check for appropriate permissions for public viewing.
Computer Mysteries: Level 3
H	860	003	Produce an Audio/Video Computer Presentation (SF276) – Using presentation software a 4-H exhibitor designs a multimedia computer presentation on one topic related to youth, including audio and/or video elements. A notebook with a printout of all the slides should be submitted. The presentation should be at least 2 minutes in length and no more than 5 minutes in length, appropriate graphics, sound and either a video clip, animation, or voice over and/or original video clip. State Fair qualified entries should be submitted to https://go.unl.edu/2024nesfset by August 10th, 2024. Or entries can be uploaded to a cloud streaming service and exhibitors MUST provide a hard copy or QR code for viewing. Exhibitors should test their codes or links on several devices to check for appropriate permissions for public viewing.
H	860	004	How to STEM (Science, Technology, Engineering and Math) Presentation (SF276) – Youth design a fully automated 2 to 5 minute 4-H “how to” video. Submissions should incorporate a picture or video of the 4-Her, as well as their name (first name only), age (as of January 1 of the current year), years in 4-H, and personal interests or hobbies. State Fair eligible entries should be submitted to https://go.unl.edu/2024nesfset by August 10th, 2024. Or videos can be uploaded to a video streaming application and exhibitors MUST provide a hard copy QR code for viewing. Exhibitors should test their codes or links on several devices to check for appropriate permissions for public viewing.
H	860	005	Virtual Platform Presentation(SF276) – Youth design a fully automated educational presentation using any multimedia platform such as Tik Tok, YouTube, Canva, Canvas, etc. Submissions may include a notebook, poster, etc., explaining the process, experience, and/or presentation. All submissions must include a link to the virtual presentation. State Fair qualified entries should be submitted to https://go.unl.edu/2024nesfset by August 10th. Entries can also be uploaded to a cloud sharing service. Exhibitors MUST provide a hard copy QR code for viewing. Exhibitors are encouraged to test their codes or links on several devices to check for appropriate permissions for public viewing.
H	860	006	Create a Website/Blog or App (SF275) – Design a simple website, blog, or app for providing information about a topic related to youth. Include an explanation of why the entry was created. Any current website, blog, or app development platform is accepted such as Google Sites, iBuildApp, Wix, etc. If the website, blog, or app isn't live, include all files on a flash drive in a plastic case. State Fair qualified entries should be submitted to https://go.unl.edu/2024nesfset by August 10th. Entries can be uploaded to a cloud sharing service. Exhibitors MUST provide a hard copy QR code for viewing. Exhibitors are encouraged to test their codes or links on several devices to check for appropriate permissions for public viewing.
H	860	007	3D Printing (SF1050) – 3D printing uses plastic or other materials to build a three-dimensional (3D) object from a digital design (including 3D Pen Creation). Youth may use original designs or someone else’s they have redesigned in a unique way. Exhibits will be judged based on motivation and/or problem identified. For example, 3D objects printed as part of the design process for robots or other engineering projects. Must include design notebook that addresses the following questions: What was the motivation for your design or the problem you were solving with your design? i.e.. Is your item a functional or decorative piece? Please include a picture of original design, citation of designer/website OR if design is completely original (you created it using CAD software), then state that it’s original. If the item was not completely original, indicate what you did to the original design to modify it to better meet the design problem stated in #1 above. Its design was modified multiple times, please indicate what change was made with each modification, and what prompted the need for the change. I.e. I printed it and the design was too fragile, so I resliced the print to make thicker external walls, or to have a denser infill. Define your process for designing/printing. What software and/or hardware was used (indicate type of 3D printer or if item was created with 3D pen)? What materials were selected for your project? If your final design has any moving parts, define how you determined appropriate allowance in your design. Identify any changes that you will make to improve your design.
H	860	008	Maker Space/Digital Fabrication(SF1051) – This project is a computer generated projected created using a laser cutter, vinyl cutter, heat press or CNC router. Vector or 3D based software such as Corel Draw or Fusion 360 would be an example of appropriate software used to create your finished project. Project should include a notebook with the following: What motivated you to create this project Software and equipment used Directions on how to create the project Prototype of plans Cost of creating this project Iterations or modifications made to original plans Changes you would make if you remade the project
Department H – Division 870 – STEM Electricity
				Division	Class	Pay	Purple	Blue	Red	White
				860	900-906 & 001-004	1	$6	$4	$2	$1
Magic of Electricity – Level 1				860	005-008	2	$7	$5	$3	$1
Dept.	Division	Class No.	Class Description
H	860	900	Bright Lights – Create your own flashlight using items found around your house. Flashlights should be made of items that could be recycled or reused. No kits allowed.
H	860	901	Control the Flow – Make a switch by creating a circuit that you can open & close.
H	860	902	Conducting Things – Make a circuit with a switch & a light bulb that can be used to test different household items for their ability to act as an insulator or conductor. You must find five items that are conductors & five items that are insulators. Create a table that illustrates your results.
H	860	903	Is There a Fork in the Road – Using the following items to construct one parallel & one series circuit.
Investigating Electricity – Level 2
H	860	904	Case of the Switching Circuit – Build a three-way switch. Write a short essay or create a poster that illustrates how three-way switches function. (Investigating Electricity, p. 28)
H	860	905	Stop the Crime – Build an alarm & create a poster using photographs to show the step-by-step process you used to build your alarm. (Investigating Electricity, p. 32)
H	860	906	Electrical Poster – Poster should exemplify one of the lessons learned in the Investigating Electricity Project.
Electricity - Wired for Power: Unit 3
H	860	001	Electrical Tool/Supply Kit (SF224) – Create an electrical supply kit to be used for basic electrical repair around the house. Include a brief description of each item and its use. Containers should be appropriate to hold items.
H	860	002	Lighting Comparison (SF225) – Display studying the efficiency of various lighting (incandescent, fluorescent, halogen, Light Emitting Diodes, etc.). Exhibit could be a poster display, or an actual item.
H	860	003	Electrical Display/Item (SF226) – Show an application of one of the concepts learned in the Wired for Power project. Examples include re-wiring or building a lamp, re-wiring or making a heavy-duty extension cord or developing an electrical diagram of a house. Exhibit could be a poster display, or an actual item
H	860	004	Poster (SF227) – Poster should exemplify one of the lessons learned in the Wired for Power Project. Posters can be any size up to 28 inches by 22 inches.
Electronics: Unit 4
H	860	005	Electrical/Electronic Part Identification (SF228) – Display different parts used for electrical/electronic work. Exhibit should show the part (either picture or actual item) and give a brief description, including symbol of each part and its function. Display should include a minimum of 10 different parts.
H	860	006	Electronic Display (SF229) – Show an application of one of the concepts learned in the Entering Electronics project. Examples include components of an electronic device (refer to p. 35 of the Entering Electronics manual).
H	860	007	Electronic Project (SF230) – Exhibit an electronic item designed by the 4-H'er or from a manufactured kit that shows the electronic expertise of the 4-H’er. Examples include: a radio, a computer, or a voltmeter.
H	860	008	Poster (SF231) – Poster should exemplify one of the lessons learned in the Entering Electronics Project. Posters can be any size up to 28 inches by 22 inches.
Department H – Division 900 – STEM Energy
				Division	Class	Pay	Purple	Blue	Red	White
Dept.	Division	Class No.	Class Description	900	All Classes	1	$6	$4	$2	$1
H	900	001	Create and Compare Energy Resources Poster (SF307) – Poster should explore 2 alternative/renewable energy resources. Compare and contrast the 2 resources including two of the following information: amount of energy created, costs of production, usability of the energy, pros/cons of environmental impacts, etc. Posters can be any size up to 28 inches by 22 inches.
H	900	002	Experiment Notebook (SF305) – Notebook will explore the scientific method involving alternative/renewable energy sources. Information required. 1.) Hypothesis 2.) Research 3.) Experiment 4.) Measure 5.) Report or Redefine Hypothesis.
H	900	003	Solar as Energy Display/Poster (SF308) – Item should be the original design of the 4-Her. Include the item, or a picture if item is more than 6 feet tall or 2 feet X 2 feet. Include a notebook of why the item was designed and how it harnesses the power of the sun. Examples include solar ovens, solar panels, etc.
H	900	004	Water as Energy Display/Poster(SF308) – Item should be the original design of the 4-Her. Include the item, or a picture if item is more than 6 feet tall or 2 feet X 2 feet. Include a notebook of why the item was designed and how it harnesses the power of water.
H	900	005	Wind as Energy Display/Poster(SF308) – Item should be the original design of the 4-Her. Include the item, or a picture if item is more than 6 feet tall or 2 feet X 2 feet. Include a notebook of why the item was designed and how it harnesses the power of wind.
H	900	006	Other Nebraska Alternative Energy (SF306) – Notebook should explore Nebraskan alternative energy source besides wind, water, and solar power. Include information on the chosen type of power, infrastructure for distribution, what resources are needed to create this alternative resource, cost of production, and potential uses of bio-products. Examples include geothermal, biomass, ethanol, biodiesel, methane reactors, etc.
H	900	900-902	Other Item Made in this Project
Department H – Division 880 – STEM Geospatial
				Division	Class	Pay	Purple	Blue	Red	White
Dept.	Division	Class No.	Class Description	880	All Classes	1	$6	$4	$2	$1
H	880	001	Poster (SF299) – Create a poster (not to exceed14 inches x 22 inches) communicating a GPS theme such as How GPS or GIS works, Careers that use GPS or GIS, how to use GPS, what is GIS, GPS or GIS in Agriculture, Precision Agriculture, or a geospatial topic of interest.
H	880	002	4-H Favorite Places or Historical Site Poster (SF299) – The 4-H exhibitor identifies a favorite place or historical site (including grave sites) in Nebraska. Exhibits should include latitude and longitude, digital pictures, and local area maps. Poster size should not exceed 14 inches X 22 inches.
H	880	003	GPS Notebook (SF300) – Keep a log of at least 5 places visited using a GPS enabled device. At least one site should be from a community other than where you live. For each site, record the latitude, longitude and elevation. Also include a description of the site, a paragraph explaining what was interesting about the site or finding it. Photos of each site and/or cache are optional but encouraged.
H	880	004	Geocache (SF301) – Assemble a themed geocache (physical geocache is REQUIRED with exhibit). Each geocache should be a water-tight container. It should include a logbook and pencil for finders to log their visits and may include small trinkets, geo-coins, etc. for the finders to trade. Documentation should include a title, teaser description and the geographic coordinates of intended placement. Register the site at geocaching.com, include a print-out of its registry. The entry may include a photograph of the cache in its intended hiding place.
H	880	005	Agriculture Precision Mapping(SF302) – 4-Hers will assemble a notebook that will include a minimum of 2 digital copies of various data layers that can be used in precision agriculture to identify spatial patterns and/or correlations (printed copies of websites were applications can be purchased is acceptable) A report of how the analysis of the various data will be used to make a management decision.
H	880	006	4-H History Map/Preserve 4-H History (SF303) – Nominate a Point of Interest for the 4-H History MapProject. Include copy of submitted form in folder or notebook. To nominate a site for the 4-H history map please go to http://arcg.is/1bvGogV. For more information about 4-H history go to: http://www.4-hhistorypreservation.com/History_Map. For a step-by-step video on nominating a point, please go to this link: http://tinyurl.com/nominate4h. Write a brief description of the historical significance of 4-H place or person. (a minimum of one paragraph)
H	880	007	GIS Thematic Map (SF302) – Using any GIS software, create a thematic map. Thematic maps can utilize any subject of interest to the 4-H’er. Example maps would be Amelia Earhart’s or Sir Francis Drake’s voyage, population density maps, water usage maps or 4-H project in Nebraska. Create GIS Map using data from books and/or internet. Use reliable data, (U.S. Center or U.S. Census Bureau etc.) Map any size from 8.5 inches x 11 inches up to 36 inches x 24 inches, which should include Title, Base Map, Neat Line, North Arrow, and Legend. Identify the source of your information on the back of the map.
H	880	008	Virtual Geocache (SF300) – Keep a log of at least 5 places visited using a virtual geocache platform. At least one site should be from a community other than where you live. For each site, record the latitude, longitude and elevation. Also include a description of the site, a paragraph explaining what was interesting about the site or finding it. Photos of each site and/or cache are optional, but highly encouraged.
H	880	900-902	Other Item Made in this Project
Department H – Division 861 – STEM Robotics
				Division	Class	Pay	Purple	Blue	Red	White
Dept.	Division	Class No.	Class Description	861	All Classes	1	$6	$4	$2	$1
H	861	001	Robotics Poster (SF236) – Create a poster (28 inches X 22 inches) communicating a robotics theme such as “Robot or Not”, “Pseudocode”, “Real World Robots”, “Careers in Robots”, “Autonomous Robotics”, “Precision Agriculture” or a robotic topic of interest to the 4-H’er.
H	861	002	Robotics Notebook (SF237) – Explore a robotics topic in-depth and present your findings in a notebook. Documentation should include any designs, research, notes, pseudocode, data tables or other evidence of the 4-H’ers learning experience. The notebook should contain at least three pages. Topics could include a programming challenge, programming skills, calibration, sensor exploration, or any of the topics suggested in Class 1.
H	861	004	Robotics/Careers Interview (SF239) – Interview someone who is working in the field of robotics and research the career in robotics. Interviews can either be written or in a multimedia format such as a short video uploaded to a cloud sharing service. Include a QR code with your project to allow judging access. State Fair qualified videos should be submitted to https://go.unl.edu/2024nesfset by August 10th. Or videos can be uploaded to a video streaming application and exhibitors MUST provide a hard copy QR code for viewing. Exhibitors are encouraged to test their codes or links on several devices to check for appropriate permissions for public viewing. Written interviews should be in a notebook. Written reports should be 3 to 5 pages, double spaced, 12-point font, and 1-inch margins. Multimedia reports should be between 3 to 5 minutes in length.
H	861	005	Robotics Sensor Notebook (SF241) – Write pseudo code which includes at least three sensor activity. Include the code written and explain the code function. Codes can be submitted as a multimedia format uploaded to a cloud sharing service. Include a QR code with your project to allow judging access. Multimedia presentations should be 3 to 5 minutes in length. State Fair qualified videos should be submitted to https://go.unl.edu/2024nesfset by August 10th. Videos can also be uploaded to a video streaming application and exhibitors MUST provide a hard copy of QR code for viewing. Exhibitors are encouraged to test their codes or links on several devices to check for appropriate permissions for public viewing.
H	861	007	Kit Labeled Robot (cannot be free programmed) and Notebook (SF243) – This class is intended for explorations of robotic components such as arms or vehicles OR educational kits marketed as robots that do not have the ability to be programmed to “sense, plan, and act.” The exhibit should include a notebook with the robot the youth has constructed. Included in the notebook there should be (1) a description of what the robot does, (2) pictures of programs the robot can perform, (3) why they chose to build this form, and (4) how they problem solved any issues they might have had during building and programming. A picture story of assembly is recommended. If robots are more than 15 inches wide and 20 inches tall, they may not be displayed in locked cases.
H	861	008	3D Printed Robotics Parts (SF244) – This class is intended for youth to create parts through 3D printing, that help create their robot or aid the robot in completing a coded function. Project should include notebook describing the process used to create the project, describe the success of your designed piece (did it work), intended use of the product and the modifications made to the item.
H	861	900-902	Other Item Made in this Project
Department H – Division 850 – STEM Rockets & Drones
				Division	Class	Pay	Purple	Blue	Red	White
Aerospace				861	All Classes	1	$6	$4	$2	$1
Dept.	Division	Class No.	Class Description
H	850	001	Rocket (SF92) – Any Skill Level Rocket with wooden fins and cardboard body tubes painted by hand or air brush.
H	850	002	Aerospace Display (SF93) - Poster or display board that displays or exemplifies one of the principles learned in the Lift Off project. Examples include display of rocket parts and purpose, explaining the parts of a NASA rocket or shuttle, interview of someone in the aerospace field, or kite terminology. Include notebook containing terminology (definition), and what was learned. Display can be any size up to 28 inches by 22 inches.
H	850	003	Rocket (SF92) - Any Skill Level Rocket with wooden fins and cardboard body tubes painted using commercial application, for example: commercial spray paint.
Self-Designed Rocket
H	850	004	Rocket (SF92) – Any self-designed rocket with wooden fins and cardboard body tubes.
Drones
H	850	005	Drone Poster (SF93) – Exhibit must be designed to educate yourself and others on one or more of the following topics: drone technologies, uses of drones, the different types of drones, types of training needed to operate drones, and the laws and regulations users must follow. Posters can be any size up to 28 inches by 22 inches.
H	850	006	Drone Video (SF93) – Exhibit must demonstrate how the drone interacts with the outside world. Examples include field scouting, surveying damage from natural disasters, drones used in commercial applications and settings, drones used for structural engineering. The video should not exceed 5 minutes.
Department H – Division 920 – STEM Welding
Class 1: 4-H Welding Project Tips and Suggestions All welds should be made with the same electrode/wire/rod size and number. Welds should be made only on one side of metal so penetration can be judged. Welds should be cleaned with a chipping hammer and wire brush. Apply a coat of light oil (penetrating oil) to the metal to prevent rusting. Wipe off excess oil. It is suggested that all welds be of the same size and thickness as metal. These pieces, referred to as coupons, should be 1.5 to 2 inches wide and 3.5 to 4 inches long. A good way to get this size is to buy a new cold rolled strap iron and cut it to length. The extra width is needed to provide enough metal to absorb the heat from the welding process and prevent the coupons from becoming too hot before the bead is completed. Narrower coupons will become very hot, making an average welder setting too cold at the start of the bead, just about right in the middle, and too hot at the end. The correct way to weld narrow strips is to make short beads and allow time to cool, however this project requires a full-length bead. Stick welding: Suggested coupon thickness - 1/4 inch if using 1/8-inch rod. Suggested rod-AC and DC straight or reverse polarity- first E-7014, second E-6013 MIG welding: Suggested coupon thickness - 1/4 inch if using .035 wire and 1/8 inch if using .023 wire Oxy-Acetylene: Suggested coupon thickness - 1/8 inch. Suggested rod– 1/8-inch mild steel rod 4-H Class 2 Welding Project Tips and Suggestions It is suggested that all welds be of the same size and thickness of metal. These pieces are referred to as coupons. The welds can be on one coupon that is about 4 inches x 4 inches or on individual coupons that are about 2 inches x 4 inches inch and ¼ inch thick. Suggested rods for this class of position welds for AC and DC straight or reverse polarity is, first E-6013, second E-7014 and E-6010 for DC reverse polarity only. Welds should be cleaned with a chipping hammer and wire brush. Apply a coat of light oil (penetrating oil) to the metal to prevent rusting. Wipe off excess oil. 4-H Welding Project Tips and Suggestions: Class 3 & 4 1. All welds should be cleaned and protected from rust with paint or light oil. Plans are to be complete enough that if they were given to a welding shop, the item could be made without further instructions. Bill of materials should include a cost for all items used including steel, electrodes, paint, wheels, etc.
				Division	Class	Pay	Purple	Blue	Red	White
Dept.	Division	Class No.	Class Description	920	All Classes	1	$6	$4	$2	$1
H	920	001	Welding Joints – (SF281) – a display of one butt, one lap and one fillet weld.
H	920	002	Position Welds – (SF281) – a display showing three beads welded in the vertical down, horizontal and overhead positions.
H	920	003	Welding Art (SF283) – any art created using tack welds to hold the metal pieces together (examples include horseshoe projects). Type of welder, welder settings, all plans, plan alternations, and a bill for material must be attached to the article. Protect plans with a cover. If project is designed to be outside, it is required to have appropriate outdoor finish.
H	920	004	Welding Article – (SF281) – any shop article where welding is used construction. 60% of the item must be completed by 4-Her and notes regarding laser welding or machine welding must be included. Type of welder, welder settings, all plans, plan alternations, and a bill for material must be attached to the article. Protect plans with a cover. If project is designed to be outside, it is required to have appropriate outdoor finish because project may be displayed outside.
H	920	005	Welding Furniture – (SF282) – any furniture with 75% welding is used in the construction. 60% of the item must be completed by 4-Her and notes regarding laser welding or machine welding must be included. Type of welder, welder settings, all plans, plan alternations, and a bill for material must be attached to the article. Protect plans with a cover. If project is designed to be outside, it is required to have appropriate outdoor finish because project may be displayed outside.
H	920	006	Plasma Cutter/Welder Design (SF279) – Plasma cutters/welders allowed for detailed design(s) to butt cut into metal. 4-H members will create a notebook describing the design process to create the "artwork" to butt cut into metal. In the notebook include: A photo (front and back) of the finished project. Instructions on how the design was created (including software used), this allows for replication of the project. Lessons learned or improvements to the project. Steps to finish the project.
H	920	007	Composite Weld Project (SF280) – 60% of the project must be welded and 40% made from other materials such as wood, rubber, etc. Type of welder, welder settings, all plans, plan alternations, and a bill for material must be attached to the article. Protect plans with a cover. If project is designed to be outside, it is required to have an appropriate outdoor finish because project may be displayed outside.
H	920	900-902	Other Item Made in this Project
Department H – Division 911 – STEM Woodworking
				Division	Class	Pay	Purple	Blue	Red	White
“Measuring Up” Unit 1				911	All Classes	1	$6	$4	$2	$1
Dept.	Division	Class No.	Class Description
H	911	900	Woodworking Article – Item made using skills learned in the Measuring Up manual. Examples include recipe holder, stilts, or other skill level appropriate item. Items should be entered with construction plans.
H	911	901	Woodworking Display – Display exemplifying one of the principles learned in the Measuring Up project
H	911	902	Other Item Made in “Measuring Up” Unit 1
“Making the Cut” Unit 2
H	911	903	Woodworking Article – Item made using skills learned in the Making the Cut Manual. Examples Include: birdhouse, foot stool, & napkin or letter holder. Items should be entered with construction plans.
H	911	904	Woodworking Display – Display exemplifying one of the principles learned in the Making the Cut project.
H	911	905	Other Item Made in “Making the Cut” Unit 2
“Nailing it Together” Unit 3
H	911	001	Woodworking Article (SF91) – Item should be made using either joints, hinges, dowels, or a dado joining made using skills learned in the Nailing It Together manual. Item is required to be appropriately finished. Examples include bookcase, coffee table or end table.
H	911	003	Recycled Woodworking Display (SF95) – Article made from recycled, reclaimed or composite wood. Article must be appropriately finished and/or sealed and utilize one or more woodworking techniques from page 2 of the Unit 3 manual. Exhibit must include the woodworking plan and a minimum one-page report of how the engineering design process was used to develop the woodworking plan. Engineering Design Process 1. State the problem (Why did you need this item?) 2. Generate possible solutions (How have others solved the problem? What other alternatives or designs were considered?) 3. Select a solution (How does your solution compare based on cost, availability, and functionality?) 4. Build the item (What was your woodworking plan, and what processes did you use to build your item?) 5. Reason for article finish (What type of finish, how did you finish or why you choose this finish?) 6. Evaluate (How does your item solve the original need?) 7. Present results (How would you do this better next time?)
H	911	004	Composite Wood Project (SF284) - 60% of the project must be wood and 40% made from other materials such as metal, rubber, resin, etc. All plans and plan alterations must be attached to the article. Protect plans with a cover. If project is designed to be outside, it is required to have appropriate outdoor finish because project may be displayed outside.
H	911	005	Outdoor Wood Project made with Treated Wood (SF97) - Treated wood projects DO NOT have to have a finished coating. All plans and plan alterations must be attached to the article. Protect plans with a cover. If project is designed to be outside. Examples include picnic tables, planters, outdoor furniture, etc.
H	911	006	Wood Projects created on a Turning Lathe (SF ) – Article is the object created from spinning wood on a turning lathe. Article must be appropriately finished and/or sealed. The exhibit must include plans detailing design and the process of completion, any changes made to the design, details of finishing techniques, and other relevant information about the article. Must include a description of tools used.
H	911	906	Other Item Made in “Nailing it Together” Unit 3
“Finishing Up” Unit 4
H	911	007	Woodworking Article (SF91) – Item made using skills learned in the Finishing It Up Project. Examples include dovetailing, making a pen using lathe, overlays, using a router, etc. Item is required to be appropriately finished.
H	911	008	Recycled Woodworking Display (SF91) – Article made from recycled, reclaimed or composite wood. Article must be appropriately finished and/or sealed and utilize one or more woodworking techniques from page 2 of the Unit 4 manual. The exhibit must include the woodworking plan and a minimum one-page report of how the design and engineering process was used to develop the woodworking plan. 1. State the problem (Why did you need this item?) 2. Generate possible solutions (How have others solved the problem? What other alternatives or designs were considered?) 3. Select a solution (How does your solution compare based on cost, availability, and functionality?) 4. Reason for article finish (What type of finish, how did you finish or why you choose this finish?) 5. Build the item (What was your woodworking plan, and what processes did you use to build your item?) 6. Evaluate (How does your item solve the original need?) 7. Present results (How would you do this better next time?)
H	911	907	Other Item Made in “Finishing Up” Unit 4
Department H – Division 889 – STEM SMALL ENGINE & VEHICLE RESTORATION
				Division	Class	Pay	Purple	Blue	Red	White
Dept.	Division	Class No.	Class Description	889	All Classes	1	$6	$4	$2	$1
H	889	901	Small Engine Project – Reconditioned, repaired or overhauled small engine. Include a notebook with a source of original engine, use of engine, repair parts list and cost. Gas tanks must be empty.
H	889	902	Small Engine Display or Poster– Show parts or system of a small engine, cut-away engine, worn or broken parts, or step-by-step procedure of how to perform repairs or maintenance. The exhibit should have labels, short written descriptions, drawings, etc.
H	889	903	Restored/Overhauled Vehicle – Automobiles, motorcycles, tractors, or multi-cylinder engines that have been restored/overhauled to original specifications. Include a notebook with source, use and repair list, what works was done and before/after photos.
H	889	904	Customized Vehicle – Automobiles, motorcycles, tractors or multi-cylinder engines that have been customized from the original specifications. Include a notebook with sources, use, repair list, cost, what work was done and before/after photos.
H	889	905	Non-Motorized Items – Trailers, farm implementations, wagons, etc. that have been restored, customized or overhauled. Include a notebook with source, use, repair list, cost, what work was done, and before/after photos.