The Cavity Zapper
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We used a real toothbrush and a Legoâ toy motor for our prototype.
We attached the brush with tape to the toy. We put papier maché all over everything even the batteries. Then we painted it. |
When we turn the Cavity Zapper on, red lights flash and it makes a
motor sound. There are three different buttons for three different sounds. |
We wanted the Cavity Zapper screen to light up
to show the bad bacteria so we used a night light. We put it in a box and cut out a space for the part showing the bacteria. We drew the bacteria on paper with markers. When it's plugged into a socket, light shows through the bacteria part. |
The toothpaste and floss we made with papier maché and paint.
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