soll. CHANGES IN SOLID MATERIALS WHEN THEY ARE BENT, PRESSED, HAMMERED, OR CUT Activity 1. "The Transformation" Problem: What are some ways of changing solid materials? What you need: plastic cup rubber band biscuit What to do: aluminum foil crayon wooden stick paper drinking straw 1. Gather all the materials needed and put them on the table. Show ways on how you can change their sizes, shapes, and texture. 2. Observe the changes and record all your observations.​