Warm up with a Mystery Math Mistake to tell whether Dotson's 10-frames represent a number less than his focus number. Tell Which One Doesn't Belong by examining four sets of pattern blocks. Use pattern blocks to make different shapes.

Warm up with a Mystery Math Mistake to find the error in DC's addition. Use different strategies to subtract including counting back and the connection between addition and subtraction. Use a number line to help count on to find a difference.

Warm up with a Mystery Math Mistake to find the mistake made in counting up on a number line to subtract. Notice and wonder to compare a bar graph and a line plot. Measure your own hand span. Create and use a line plot of hand span data to answer questions.