to "make the tower fall" by breaking it off somewhere in the middle. count how many were there altogether. then count how many fell. make a subtraction sentence. help kids tell a story about their tower: "i made a tower with 20 cubes. 9 of them broke off and fell down. 11 cubes were left. 20-9=11."
drop cloth: put 10 counters on the floor. drop a tissue or washcloth on top of them. how many are still showing? use subtraction to find out how many are still covered up.
under the cup: show kids some objects and count how many there are. tell kids to close their eyes; while their eyes are 