Unit 1 Relationships Between Quantities and Expressions
Week 3
Lesson 3 Unit Conversations
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.
Essential Questions
• What do we measure gasoline quantities in?• What would you use to measure the distance
of a drive way? To a store?
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.
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?
A. dollar per minuteB. dollar per foot of yarnC. feet of yarn per minuteD. balls of yarn per day
Activator
• Discuss directions for ‘Conserving Fuel’ Task
Summarizer
• Discuss outcomes, struggles and questions students may still have about the ‘Conserving Fuel’ Task
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