Formal Operations!

 "If I have 5 crayons, and some are red and some are blue, how many blue or red crayons could I have ?"

If I roll two dice and add up the dots, then I color in the block that corresponds to that number.

"John built a wall with two blocks and a bridge with four blocks. How many blocks did he use altogether? Show your work."

double compare. These two cards equal......

and these two cards equal......MINE

build and remove. Start with 10, roll the 123 dice, subtract, and write the number you get