Tuesday, November 3, 2009

Co-Op Week 11

This week my 5th and 6th graders are working on completing Module 3. We went over the first half of the study guide. I also introduced Module 4 and the kids completed an experiment involving pulleys. They lifted a bag on a pulley and then a series of pulleys (block and tackle) to get a feel for the mechanical advantage.

My 7th and 8th graders have just completed Module 5 and are starting Module 6 this week. They completed an experiment that I borrowed from chemistry, because most of the experiments in this module take a full day or days to complete. So, I had to find something that would work in a classroom environment.

They completed experiment 4.2 from chemistry: Distinguishing Between Chemical and Physical change. This is the experiment where you dissolve an egg shell in hydrogen chloride (toilet bowl cleaner). It just happens that this ties in with their study of physical and chemical weathering.

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