Occasional Observations of Traveling Technology Coach

The students made 3-dimensional wands –  based on cubes — using the 3Doodler handheld printing pens.

Now we all know that cubes have six sides, each side being a square. To make a cube, you may think that we would need to make six squares, and use the plastic filament to attach the sides to each other at 90 degree angles. We learned a short cut that only used four squares! Can you figure out why it works? (Imagine a hollow cube).

When the students blew into the wands in one side, the air escaped from any of the five different sides, and the bubbles went off in all different directions! Also, the inside of the wand made very unusual bubble shapes!