Maria plays piano. She wants to make more music. Can you build her something to play on?

Touch some classroom instruments as we play them.
What did you feel?

When did they vibrate?
What do you think makes that happen?

Work together. Plan a way to test how vibrations make sound.
Start with a drum.
Build one to help Maria play more music.

Program your model. Make the drumstick hit the white plate over and over.

Now take turns testing your ideas.
Hit the white plate with the drumstick.
Look, listen and feel.

What happens to the white plate?
When does the drum make sound?

Change the vibration.
Try different sticks or changing where you hit the plate.

Try dragging the stick instead of hitting with it.
What other sounds can the drum make?

Use your model to explain:
What idea about sound did you test?

How does your drum make sound?
How did you make different sounds with your drum?

What happens to the white plate when you hear sound?
Is it always the same?

Now test another kind of instrument.
Use your drum testing plan or change it.

Stretch and pluck a rubber band.
What do you hear? See? Feel?

Great job!