This is a one page Smart Board activity inspired by Kathy Richardson's What's in the bag? Two students, four studetns or the whole class can play. Player A chooses and amount
of blocks and shows it to player B, and then places the blocks in the bag.Then player B does the same.The children then add
the two numbers. After both players have worked out their
problems. They take the blocks from the bag and check their
answers. Points are given for correct answers.
To play subtraction version- Both students write the amount
of blocks in the bag. One player removes some blocks. Both students solve the equation to find out how many blocks are left in the bag. Students repeat this taking turns pulling blocks out of the bag.