1. Lesson 4

2. Task #5: Swimming Pool
Spiral pg. 79
Binder pg. 10

3. You want to build a square swimming pool in your backyard
You want to build a square swimming pool in your backyard. Lets denote the length of each side of the swimming pool (measured in feet). You plan to surround the pool by square border tiles, each of which is one foot by one foot (see figure).

4. A teacher asks her students to find an expression for the number of tiles needed to surround such a square pool, and sees the following responses from her students:
4(s+1) s2
4s+4
2s+2(s+2) 4s
Is each mathematical model correct or incorrect? How do you know?

5. Smartphones/University Pop.
Spiral pg
Binder pg

6. In your Group You will be creating a poster on the next task.
Your group will have 25 minutes to create the poster, and be ready to present on the topic.
You can show numeric or verbal proof of this.

7. Poster must include: Brief summary of the problem.
Each pair of expressions.
The proof for why which expression is larger for each pair.
Again the proof could either be a numerical example.
Or verbal reasoning.
Must be neat and organized.

9. Independent Practice Spiral pg. 82/Binder pg. 13