Y2 Testing Sound and Distance

Pupils place a ticking clock (or similar item) on a table at one end of the classroom (or school hall). They stand next to, but facing away from, the table. When everything is quiet pupil raise their hand if they can hear the ticking clock? Pupils take one step forwards and raise their hand again if they can hear the clock. They repeat this process until they can no longer hear the clock. Pupils record their findings and place their results into a pictograph.