1. Using customary units of length
Literature Link: Inch by Inch by Leo Lionni
Lesson CCSS 4.MD.1

2. MATH Essential Questions
What are customary and metric units for measuring length, capacity, and weight/mass, and how are they related?  
MATH
Essential
Questions

3. Warm Up
Let’s Review!
42 X 5
61 X 7
38 X 8

4. Think and Write
List as many things as you can think of that are about 1 inch long.

5. Today’s Lesson In this lesson, you will estimate and measure length.
Let’s look at the Envision Video for this lesson and take the quiz.

6. Customary Units of Measurement
In the United States, we use customary units of measurement, while most other countries use metric units.
The customary units of measurement are:
Inch
Foot
Yard
Mile

7. Choosing Measurement Units
You choose your unit of measurement based on the size of the item or space you are measuring.
Small objects are likely measured with inches.
Medium sized objects (desks, rooms, people) are measured in feet.
Larger things are measured in yards, like football fields. Miles are used to measure driving distances between cities or states.

8. Which Unit?
Which customary unit of measurement would you choose to measure the following items?
Cell phone
Distance between New York and Florida
Car
Length of a school building

9. Which Unit?
Which unit would you use to measure these items?

10. Measure to the Nearest Inch

11. Lesson Wrap Up
In this lesson, you estimated and measured length using customary units of inches, feet, yards.
Classwork: 14-1 Reteaching
Homework 14-1 Practice