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- Skip counting or word skipping? June 25, 2017
- Numicon – combining geometry and arithmetic June 22, 2017
- Discussing the meaning of “almost” with an 8 year old June 2, 2017
- From math-hater to mathematician and computer scientist: The story of Allison Bishop June 1, 2017
- A number talk that turned into an investigation May 26, 2017
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Math is not the only thing we do in our household! This is a guest post by my husband about a fun science experiment he did with the kids:
Recently I stumbled onto The Everything Kids’ Science Experiments Book on one of our bookshelves. It was a present from someone on Katie’s birthday a few years ago, and at that time I thought her too little for it. And, to be honest, I didn’t consider myself sufficiently ‘handy’ for this.
After flipping through the pages, I decided some of the experiments even I should be able to do. And that is how, one spring evening, our whole family found itself contemplating the hardness of eggshells and the significance of domes!
This simple experiment starts with taking 4 egg half-shells, trimming them down to about the same size and arranging them in a rectangle.
Then we … pile books on them! The kids were very excited and started making predictions about how many books it’d take to crush the shells.
To their, and our, surprise these predictions fell short. The books kept piling.
Then, with a slow crunching sound, one shell gave way.
The rest held longer, but one-by-one they too succumbed. And this was all that was left of the eggshells, aside from pictures, fun memories and some vague plans to do more hand-on experiments with the kids on our part.