5_11_07

Finish cupfuls of soil lesson. Review what happened yesterday, and why we got such different numbers. How can we make sure we are doing fair measuring? Does it work if everyone just measures the way they want to without making sure they're all doing it the same way? Agree about how high to fill the pot, how full to make the cup, etc. Students repeat the exercise from the day before.

Sharing: put all results on the board and discuss the results. How close are they? What do you notice about the numbers today? Why do you think they are closer together?