About This Chapter
Standard: Use units as a way to understand problems and to guide the solution of multi-step problems; choose and interpret units consistently in formulas; choose and interpret the scale and the origin in graphs and data displays (CCSS.Math.Content.HSN-Q.A.1).
About This Chapter
Students who have mastered this standard are able to measure length, weight and liquid capacity in U.S. customary units, commonly referred to as 'standard units of measure,' as well as metric units. They also understand how the various units compare with one another and are able to add, subtract, multiply and divide using measurements.
Lessons in the standard cover the following topics:
- Standard units of measure
- The metric system
- Converting standard and metric units of measure
- Converting metric to standard units and vice versa
- Performing basic operations with measurements
- Relationships among units
- Reading and interpreting scales and meters
- Squares and cubic units
- Solving problems with money
- Solving problems with time
Students demonstrate mastery of this standard by converting units of measure within the standard or metric systems. They also can convert units from the standard to metric system and vice versa. Additionally, these students can apply the lessons they've learned to solve problems involving money and to calculate lengths of time.
How to Use These Lessons in Your Classroom
Following are some tips on how to use these lessons to support instruction in the measurement standard:
Units of Measure Lesson
Have students watch the video lessons Standard Units of Measure and What is the Metric System? and then have them determine what unit(s) of measure would be most appropriate for determining the length, width and/or height of various objects in the classroom (for example, a pencil, a textbook and a lab table).
Scale Drawings Lesson
After watching the video lesson How to Read and Interpret Scales & Meters, have students brainstorm various scenarios in which they would encounter scale drawings. Ask them to explain why scale drawings would be used in these situations.
Solving Problems with Money Lesson
Have students watch the video lesson How to Solve Problems with Money and then present them with a shopping list and a list of available products that contains two options for each item on their list. Have the students determine which of the options is a better buy. For example, the list could include a 2-liter bottle of soda and a 3-liter bottle of soda; students might calculate which is the best buy per liter.
1. The Metric System: Units and Conversion
Just like you and your friend communicate using the same language, scientists all over the world need to use the same language when reporting the measurements they make. This language is called the metric system. In this lesson we will cover the metric units for length, mass, volume, density and temperature, and also discuss how to convert among them.
2. How to Solve Problems with Money
Money matters, and knowing how much things cost will be useful no matter where you go. In this lesson, we'll learn the steps for solving word problems involving money.
3. How to Solve Problems with Time
It's amazing how much time can be saved when people work together. In this lesson, we'll practice figuring out just how much time we're talking about as we solve problems involving time.
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