Invention (Past vs Future)

Students rotate to measure their invention’s:

Length

Choose a unit of measure. This could be an informal unit or ruler/measuring tape. Extension: compare the difference between your invention and another invention in the room. Or can you add the length of two inventions together. Can you find someone in the room that has the same length invention?

Capacity

Measure the inside the unit will need to be the same e.g. a unit block, pom pom,

Mass
Weigh your invention and then compare mass to another invention. What is the difference? Or can you find someone in the room that has the same weight as yours?