Friday, January 15, 2021
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Judging Criteria

Most inventions follow the same formula for success by being:

  • Original
  • Effective
  • Practical
  • Needed
  • Carefully recorded in a log or journal (Young children may use pictures or dictate information to someone)

Using the judging rubric to record scores and comments about each inventor as they present their invention idea.  For each category, consider questions such as these:


  • Did the inventor find a unique, unusual, or clever solution to the problem?
  • Did the inventor research to find out? (This should yield an age-appropriate response: a young child might ask a number of people; an older child might explore catalogs, stores and related companies, search the internet or even a patent database. Ask to see a record what the inventor researched.)


  • Does the invention solve the problem?
  • Does it do what it is supposed to?
  • Does it work even better than the inventor expected?
  • Does it solve other problems, too?


  • What advantages and disadvantages does this invention have as compared to other similar inventions?
  • How much thought was given to safety, ease of use, and choice of materials?


  • How important is the problem solved by the invention?
  • Who benefits from it, many, few, or only the inventor?
  • Does it serve a disadvantaged group, like the handicapped, the elderly, or animals?
  • Is the invention more or less friendly to the environment than currently available products?


  • How well did the inventor explain the steps taken from beginning idea to invention?
  • Did the inventor date and list these steps in your inventor's log book?
  • Did the inventor include resources used, problems they ran into, reasons for choice of materials, final design, and testing? Was credit given to those who helped?