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:

Bones (6th Grade)

Hello!

Today we want to show you an experiment we did some days ago, when we were learning the Musculoskeletal System.

First, pupils were asked to bring bones in class. Attention! These bones had to be cooked, cleaned and frozen, for our safety work.

We could also see some cartilage.

Ariadna brought an enormous pig bone!

Once we had all the bones (most of them, chicken bones), we classified them into 3 groups:

LONG - SHORT - FLAT

After that, we broke a bone to see what it has inside: THE BONE MARROW; responsible for making blood cells.

Then, we put some bone in a jar full of white vinegar, and we waited for 2 weeks.

What happened to the bones when we opened the jars after 2 weeks?