Waves & How They Move means practising the idea at the table with a simple hands-on check. We will demo once, then your child tries.

Materials: A torch or phone light and a blank wall OR a rubber band / ruler for sound; Paper for notes. 1. Say the goal of Waves & How They Move in plain words once. 2. Adult makes one light or sound change (shadow size, or pitch by tightening) and names what changed. 3. Child makes three controlled changes and records what they see or hear. 4. Fresh check: one fresh cause-and-effect observation. Record and stop. Done: three recorded light/sound changes with a cause each. Proof: parent note of examples and results. Stop: End after the fresh check; keep optional challenge for another day.