Tuesday, April 29, 2008 - 4A

Went over procedure for paper chromatography lab.
Students started lab.
Took out coffee filter after the inks ran and let them dry.

While waiting for the ink to dry, tried to go over Density Lab results. Students did not pay attention. I told them this material was going to be on the test next period but students did not want to go over them. Instead I let them finish the paper chromatography lab.

Finished paper chromatography lab, each student choosing an unknown. Most students were able to correctly determine which pen gave that mark.

Test and lab test next time on density.