Grade 7 http://www.funbrain.com/football/ Start at the medium level with a partner, then Try the hard! Make sure you pick all operations (=,-,x ._0

http://www.onlinemathlearning.com/surface-area-worksheets.html
Online worksheet for surface area of clinders. You figure it out on paper and enter your answer to check.

Science-light http://www.learner.org/teacherslab/science/light/color/index.html