Friday, October 25, 2013
Chifundo
Chifundo
Friday, October 11, 2013
Lab#2 Photosynthesis
Yesterday I did a lab with my form 3 bio class. We were testing 2 different leaves for the presence of starch; a green leaf and a yellow leaf. The hypothesis was that the yellow leaf wouldn't have starch because it doesn't have many chlorophyll to perform photosynthesis. The lab itself went very well. The students were engaged, they followed the procedures, and the results were exactly what I had wanted. The lab reports, however, were much less successful.
Last week we learned how to write lab reports. I discussed the format, what sections to include, and exactly what each section should contain. So this lab we were going to practice and work through the entire thing together. I wrote the purpose, materials, and procedures on the board so all they had to do was copy them. As a class we generated a hypothesis and that too I wrote for them to reference. After the lab we discussed the results. So all they had to do was come up with a conclusion. I even prompted them with that by writing: "the green leaf showed that it had starch because..."
When I got the lab reports, they were a mess. The format was nothing like I taught, sections were in any random order and some on completely different pages. Some had the word "hypothesis" written three times but no actual hypothesis to go with it. Some of the conclusions were good and a few were pretty impressive, but most were like these:
"The green leaf showed that it had starch because..."
"First stating we can boil the water and because of boiling water the green leaf has starch."
"Photosynthesis to make food to green leaf but the yellow leaf has no starch because of there not make they food."
"The green leaf is chlorophyll."
And my personal favorite:
"Do not become yellow."
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