Kids STEM activity: Cardboard tube blocks • OK!Dolls
Recycled cardboard tubes. Scissors. Step 1. Cut cardboard tubes in half or one third up the tube. I wanted mine to be an assortment of sizes but you can cut them all the same if you would like them more uniform. Step 2. Slightly fold the tube in half to create a crease, then again to create 4 creases. I do this rather than measuring but you can ...