[Nfb-science] science experiments
Blaine Clark
blaineclrk at gmail.com
Sat Jan 26 20:14:22 UTC 2013
If you can get some of those dried sponge toys that have recently been
banned in the US because they pose a health hazard to small children who
can swallow them, you can let your students feel them before they go
into the water and perhaps two or more can keep their hands on them in
water as they expand. You could even just partially immerse them so they
could feel the portions under water versus the portions above water and
tell how the water/air division area softens and partially expands as
water starts to creep up. You should be able to do this with regular
hard dried sponges too.
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