This summer get to know your local dollar store well, they have so many great things that you can turn into a craft or a game for your bored kids.
I picked up 3 plastic bowls . . .
and 3 bunches of plastic scrubbers and they will make a great outdoor math and aim game.
Make some signs denoting each bowls value, that way kids will have to keep the score as they toss the scrubbers in.
Depending on the age of your players you could introduce some algebraic equations or assign really large numbers to keep track of.
This is a great way to get the kids outside interacting with their peers while mastering some math skills . . . this is a definite win for Moms, way to go :-)