Science, Technology, Engineering, Math (STEM)

Only one entry per class.  SF Classes only are State Fair eligible. 
All static exhibits must have received a purple ribbon at the county fair to advance to the State Fair. Large static items eligible for State Fair will be the responsibility of the family to get to the Nebraska State Fair. 
Rules:

  1. 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.
  2. Demonstration boards should include an overall title for the display, plus other necessary labeling.
  3. Reports should be written using the scientific method whenever possible: 1. Hypothesis 2. Research 3. Experiment 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.
  4. Please refer to the State Fair General Rules for the policy regarding firearms, items with a blade, and other related items. 
  5. Please refer to State Fair General Rules for the policy regarding use of copywritten images.
  6. Premier 4-H Science Award is available in this area.
  7. 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.
  8. 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.
  9. 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.)
  • Fabricated boards such as plywood, composition board, or particle-type lumber may be used for demonstration displays.
  • Demonstration boards should be sanded and finished to improve their appearance. The finish on a demonstration board will be judged as a woodworking 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.

    10. 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.

Scoresheets, forms, contest study materials, and additional resources can be found at https://go.unl.edu/ne4hstem.
Premier 4-H Science Award is available in this area. Please see https://4h.unl.edu/4-h-fairbook-nebraska-state-fair/contests/premier-science-award/.