Thursday 4 September 2014

Microscopes (Interdependence 1)

This afternoon we had heaps of fun with the school's three microscopes. They are relatively low power (10 and 20x) so it wasn't a case of seeing the bugs in water or the cells in onion layers... but very cool nonetheless.
We started by talking through the basic operation of the microscopes and how to handle them carefully. Then we looked at a few pre-assembled items such as some moss, Rosie's eyelash, a fingerprint and pencil shavings.
After we looked at the objects everyone had to go out and search for some more small things that we could inspect. This is where it got really interesting. Laurence and Aleks found a slug - you could even see his breathing hole opening and closing along his side. They also returned with a millipede which looked slimy to the naked eye, but under the microscope we could see that the shine comes from its hard exoskeleton. We found a dead fly on Mrs Lees' windowsill, and its eyes looked absolutely amazing under the lens. A green leaf that someone brought in was described by Ivan like emeralds. The surface wasn't smooth at all but sparkly and bumpy.
Here are some other ideas: https://www.microscopeworld.com/t-low_microscope_ideas.aspx

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