Wednesday, November 25, 2009
Biology: Microscopes: Honey, I shrunk the kids!
This entry summarizes our work over the past 2 weeks.
Last week we took out our old friend, the microscope. We reviewed how to use it and got started by examining cheek cells, onion cells, and assorted bugs.
This week we took things to a new level by learning how to measure specimens under the microscope. The kids measured the lengths of lice, spiders, ants, and even actual cells. You can be sure we weren't measuring in meters or even centimeters. The kids got some practice with micrometers, 1000 of which make a millimeter.