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let¡¯s make a seesaw with a candle. As I know, you really like to play with candles. especially on birthday^^
Today, I¡¯ll handle fire and Knife. so you should be careful .just look. Ok?
I¡¯ll sharpen the other end of the candle and fix it on wooden stick with fire. as you know paraffin melts well.
Then put the wooden stic on 2 cups like this.
now I¡¯ll light up a candle. And observe carefully.
What¡¯s happening?. It goes up and down like seesaw!
Do you know why???
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