1. Unit 1 Relationships Between Quantities and Expressions Week 3 Lesson 3 Unit Conversations

2. Focus Standards
N.Q.1 – Students will use units of measure as a way to understand problems
N.Q.2 – Define appropriate quantities for the purpose of descriptive modeling. Given a situation, students will determine, identify and use appropriate quantities for representing the situation.
N.Q.3 – Choose a level of accuracy appropriate to limitations on measurement when reporting quantities
A.CED.1 – Create equations in one variable and use them to solve problems. (integer inputs only)
Objective: Students will apply Dimensional Analysis to a real world context.

3. Essential Questions What do we measure gasoline quantities in?
What would you use to measure the distance of a drive way? To a store?

4. Vocabulary Words
Dimensional analysis is a process that uses rates to convert measurements from one unit to another. A rate such as in which the two quantities are equal but use different units, is called a conversion factor. To convert a rate from one set of units to another, multiply by a conversion factor.

5. Read, Write, Draw, Solve
Carlisle is going to fabric supply store to buy materials for the crafts. She knows that she needs 12 feet of blue yarn and is wondering how much she will spend. Which unit will most likely be used to determine the cost of her yarn?
dollar per minute
dollar per foot of yarn
feet of yarn per minute
balls of yarn per day

6. Activator
Discuss directions for ‘Conserving Fuel’ Task

7. Summarizer
Discuss outcomes, struggles and questions students may still have about the ‘Conserving Fuel’ Task