In order to do this, you will need to plan and carry out a fair test to decide which is the best material to make your ear defenders from.
To do this, you may want to find a sound source in your house (alarm clock, radio, phone etc) and select a range of household materials (paper, foil, cling film, toilet tissue, cotton material etc) and test to see how well they muffle the sound.
You may want to:
- Record your results in a table
- Create a design for your ear defenders
- Write an explanation text, justifying why you chose the materials you did.
As always, I would love to see your photographs and/or videos.