1. Listen Up! Science - Year 4 Sound – Block 4S Session 4 PowerPoint
© Original resource copyright Hamilton Trust, who give permission for it to be adapted as wished by individual users. We refer you to our warning, at the foot of the block overview, about links to other websites.

2. Pardon? How do we hear sounds?
Think about what we have learnt so far about sound and discuss the answer to this question with a partner.

3. The Structure of the Ear
semi circular canals
ligament
auditory nerve
pinna
ear drum
cochlea
eustachian tube
hammer
stirrup
ear lobe
anvil
(ear ossicles)
The Structure of the Ear

5. Let’s do a quick scientific prediction.
Discuss with the person next to you:
which will help you to hear more clearly – a big cone ear or a small cone ear?
Why do you think that?
During the independent activities, you can test your hypothesis using a piece of card.