Triangles

If Y = 12 cm and X = 9 cm, what is the length of Z?

How would you solve this problem?

Marbles

Justin has 3 red marbles, 6 blue marbles, and 6 green marbles. If Justin wants to separate the marbles into two equal piles, how many marbles will be in each pile? (To make the piles even, assume Justin can break a marble in half if need be.)

How did your students solve this problem?

Real World - Shirts

A store ordered 536 shirts from a factory. The factory sent 100 each day for three days. Then, they sent 86 the next two days. How many more shirts do they still need to send?

Explain how your students solved this problem.

Real World Problems

Pete is 15 years older than Nick. Nick is 18 years younger than Howie. If Pete is 18 years old, how old is Howie?

Try this problem with one of your classes, maybe use it as a warmup problem. Have the studetns write the steps to solving this problem. Share their responses along with how you would teach this concept.