Tuesday,+July+27

• How will you organize your work to find the answer? (strategy) • How will you know that your answer is correct? • How will you know that it is the only possible answer? • If there is more than one answer, how will you know you have them all? • What if...?

Using blocks, build staircases such as the ones below:



Find the number of cubes in a staircase 10 blocks tall, 20 blocks tall, 100 blocks tall, and N blocks tall.