Use rulers to demonstrate amplitude and pitch. My starter was me playing happy birthday with a 15cm ruler, and Jingle Bells (it was December when I planned this)
Practical activity.
In pairs students pick a type of ear to make. They then stand near the sound source that is included and walk backward until they can no longer hear the sound. The sound needs to be very low, along with the class being quiet.
Two elephant ears should be the best.
Lesson 6 of an 8 part series. This teaches students how to draw graphs, spot mistakes in graphs and gives them a checklist to work to.
Lesson includes a guided powerpoint and the related worksheets (differentiated task)
This is a free resource as part of the working scientifically bundle. To purchase the rest of the items, please look for my bundle!