Carrying on from the seesaw experiments, the children got the chance to work with a balance. A balance is a tool that can compare the mass of two objects. It is essentially a seesaw. The children knew what the seesaw looked like when the mass of each object was even (it balanced) and they also knew what the seesaw looked like when the mass of each object was uneven (the heavy side went down).
First we compared. Next we found how much something weighed. Our unit of measurement was kangaroos! On one side of the balance we put an object. We put kangaroos on the other side one at a time until it balanced- meaning equal weight.
On to magnets!
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