In Science we have started our unit on Wheels and Levers. Today we created a Venn diagram comparing wheels to rollers. We also did an experiment with rollers to see how we could reduce our work load and reduce the amount of friction. We concluded that pushing a student across the floor was a lot of work and created a lot of friction. Using the rollers reduced this and made our job easier. We also predicted that using wheels with an axle would make our work even easier.
Friction!
***Photo credit to M.S. of 4C! And thanks to Mrs. G. Plitt's husband for providing us with rollers for Grade 4 Science!!
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