Grab your Free Guide - 3 sTEps to stem success


  1. Hi Kristin! I am so glad you like this challenge. We did some work before building the barrier which included experimenting, so the materials are numerous. You can get all the hints, directions, lab sheets, and materials from my TpT store:

    Thanks again!

  2. What materials did you end up using? I'm going out on a limb and doing this challenge for a 1st/2nd grade stem class I teach after school.

  3. I am so glad you are interested in this challenge although I will say it might be hard for that age group. More info is available at my store:

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