Sarah Lindsay
More ideas from Sarah
a "simple machine" think of ways to test it. What matters for distance-weight of item, thickness of elastic, length of elastic, how far you pull pencil back? How accurate can you be? Can tie this in with Medieval Unit

a "simple machine" think of ways to test it. What matters for distance-weight of item, thickness of elastic, length of elastic, how far you pull pencil back? How accurate can you be? Can tie this in with Medieval Unit