It's been a long time since I posted a school project. But since the top searches on my blog always lead to our rainforest diorama and atom model, I thought it might be time to post another one! I've been meaning to post this for years: Lizzy's 3D cross-section volcano.
Here's how we made it. We started with a large cardboard tube cut in half, and a flat square box about the size and shape of a large pizza box. I cut an arc in the middle of the box and inserted one end of the cardboard tube, spread a little at the base.
so that the "underground" was included in the cross-section.