cockroach test

This week in science we did an experiment with cockroaches. We were allowed to design our own experiment which was a little challenging. My group wanted to see what surfaces the cockroaches liked. When we were planning the test, we did not consider every variable. This is what I learned about designing experiments. You must consider all variables. In our test the cockroach would go where it could get shade which we forgot about. We also did not have the same amount of space for each surface. Next time I design an experiment I will make sure I consider every variable before I start gathering materials.