A young friend helped me test out these tube feet when I was working on Amazing Cardboard Tube Science. It's the special extra experiment you get in the bind-up (a paperback with the whole series combined). He's walking like a pro: https://youtu.be/Jcz0F_m_RnU Challenge: Play with the materials used to make Tube Feet. Can you figure … Continue reading Tube Feet
I took some video while I was writing Amazing Cardboard Tube Science. This shows one the projects--a marble run. Marble runs are great for discussing potential energy, kinetic energy, and energy transformations. https://youtu.be/rwhGntSfK28 And here you can see some of the engineering challenges I had to overcome as I worked: https://youtu.be/6T2CKH_64kA Now, a challenge for … Continue reading Marble Run
Once Upon a Science Book 