This free math tutoring video shows more ways to play “What’s in the Box?” Missing addends, subtraction, lots of fun stuff here utilizing the Cuisenaire Rods! Be sure to watch my videos “Teaching Addition and Subtraction with Cuisenaire Rods” and “The Three Meanings of Subtraction” to get the full picture of what is happening here. It is very important to understand the concept of whole/parts (or number bonds) in order to decode word problems. This is where you start.