Once students understand the order of operations, they often just get stuck doing increasingly *difficult* practice problems. That's a sure-fire way to squelch learning, though. Here, students determine where to place parentheses to make the greatest change in an expression.

Using exponent patterns, can students predict what the 0th power will be?

Say you have a dollar. Say you can double that dollar each day: $1, $2, $4, and so on. How long will it take to reachâ€¦ **one million dollars**? Not as long as you might think!