Thursday, December 12, 2013

B day students and anyone who was absent last Friday on A DAY

B day students,
I won't be able to show you this clip on the two models of the solar system. If you can watch it before class on Friday, it will be very helpful for you.
Here's the link. I hope it works.

http://www.pbs.org/wgbh/nova/education/space/galileo-sun-centered-system.html

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