Ear drum model (3rd Grade)

Good afternoon everyone!

Today, with 3rd Grade pupils, we have made an EAR DRUM model (we are learning about the sense of hearing).

The EAR DRUM is a very sensitive organ, inside our ears, which vibrates when sounds pass through it.

With very common materials (a can, a balloon and salt), we built a model of it. To see how it works, you just have to make loud sounds near it and then observe how the salt moves without touching it, just by the vibration of the balloon (=ear drum):

How old are your ears? (3rd Grade)

Hello 3rd Grade!

As promised, I share here the video watched in class, in which we tested our sense of hearing.

Try to do it at home and also test your family!

Hearing and sounds (6th Grade)

Hello children!

In 6th Grade, we are revising the senses. We did a couple of experiments that you can do at home. They're easy, clear and fun.

MATERIALS:

EXPERIMENT 1:                                   EXPERIMENT 2:

              - A wire clothes hanger                                    - A can

                          - 2 strings                                          - A balloon

                    - Some salt / sugar               - Something to make strong noise 

                                                                 (we used a cover pan and a spoon)

EXPERIMENT 1:

- Make noise with the hanger (for example hitting it to a table) and listen.

- Make the same noise again but this time listen through the strings:

 You will hear a strong GONG!

That's because the sound waves can travel through air, liquids and solids. When we listen to the hanger through the strings, we receive this information through a solid. And solids can transmit sounds better than gases:

1- Solids

2- Liquids

3- Air

EXPERIMENT 2:


We built an EAR DRUM with a can and a balloon to understand how it vibrates with sounds: