User login


Search Results


Showing results (1 to 1 of 1)

  • Thumbnail
    Twin Cities Public Television
    Add to list Details
    In this activity, learners build penetrometers to test leaf toughness. Biologists measure leaf toughness to study the feeding preferences of insects and bugs.

    $1 - $5 per group Ages 8 - 14 45 to 60 minutes

Current filters


  • Query parameter - amp;chemical - not supported

  • Resource Language

  • Age Range

  • Preparation Time

  • Materials Cost

  • Subject

  • Source Institution