Abacus- What number can you make?

Launch: Sponge and bucket of water activity. Get water from one bucket to another using only a sponge. Explore: Make{...}

In a car park there were 20 wheels.  If cars have 4 wheels, mini-vans have 6 and motor bikes have{...}

Launch: The snails and ants are scattered in the garden.   How could I show this data more clearly? Explore:{...}