It worked! We were so excited to come into the classroom this morning and see the final results. We noticed that the purple wasn’t quite purple and upon further investigation, we found that the paper towel coming from the blue cup was not touching the bottom of the empty (purple) cup. We theorized that had it been touching the bottom, we would have gotten a better result. We also noticed that the water level lowered in the red, yellow, and blue cups and theorized that it must have travelled through the thirsty paper towels into the empty cups, and that is how the colours mixed. That also changed the colours of the paper towels, which is something we didn’t think would happen!

As we conducted our experiment, we followed the scientific method, below, which is posted in our classroom. Let us know if you repeat the experiment at home, and what results you got!