1. Measurement Goal 2: Length
2.01: Estimate the measure of an object in one system given the measure of that object in another system.

2. Check What You Know Choose the tool you would use to measure each.
Customary Units and Tools
The length of the whiteboard
The amount of flour needed to make a cake
The weight of a stapler
Harcourt Math North Carolina Edition Text book
Chapter 24- page 521
Choose the unit you would use to measure each.
4. length of your foot- inches or yards
5. weight of a truck- pounds or tons
6. water in a pool- quarts or gallons

3. Metric Units and Tools The temperature outside The mass of a bracelet
Choose the unit you would use to measure each.
The temperature outside
The mass of a bracelet
The distance across the
room
Textbook page 521
Choose the unit you would use to measure each.
4. distance run in a race- centimeters or kilometers
5. mass of a big dog- grams or kilograms
6. large bottle of soda- liters or millliters

4. Vocabulary Power A unit is a quantity used as a measure
Customary units are used in the USA
Metric units are used all over the world.
Standard units include both customary and metric units
Nonstandard units are……..( You need to define)
The precision of a measurement is related to the unit of measure you choose. The smaller the unit, the more precise the measurement will be.
Copy vocabulary into Math Notebook

5. Customary Units of Length
Customary Length
Length- the longest extent of anything as measured from end to end.
Customary Units of Length
12 inches (in.) = 1 foot (ft)
3 feet= 1 yard (yd)
5,280 feet= 1 mile (mi)
1,760 yards= 1 mile
Allow students time to share: Copy chart into Math notebook
Textbook page 522
Can you create a saying to help us remember these figures?

6. Nonstandard units of length
Measure and compare lengths using nonstandard units.
Devise a plan to compare your data with the class.
Use a paper clip to measure the width of your desk. Record your data.
Use a piece of string to measure the width of your desk. Record your data.
Use a penny to measure the width of your desk. Record your data.
Which unit is longer, a paper clip, a penny or a string length?
Which is item was more accurate?
Which unit would be more appropriate for measuring the width of our room- paper clips, pennies or pieces of string?
Defend/explain your answer choice. 
Have the following materials available:
Paper clips of various sizes and shapes
String of various lengths
A lot of pennies
Textbook page 522- Activity 1
Thinking OUTSIDE the box:
Why doesn’t everyone have the same answers?
Are you correct and your classmates wrong?
Defend your answer

7. An Alien from another planet “What to do with a ruler ?”
has asked you,
“What to do with a ruler ?”
Explain what you know about a ruler.
Be sure to include:
What is it?
What does it measure?
What do all those marks mean?
When do you use it ?
Writing Connection

8. How to Use a Ruler
Place the end of the ruler to the end of your object to be measured. * Be sure to check where your ruler begins.
Most rulers have 16 marks.
Use your knowledge of equivalent fractions to complete the chart.
1/16
1/8
1/4
1/2
2/16
4/16
8/16
12/16
16/16
Give students several different types of rulers.
Allow them to complete the chart after discussion about the mark identity.
I could not get the website to link to the powerpoint nor wikipage.
Be sure have website opened before starting the lesson.
The Ruler game allows practice with ruler in incubments or 1/16, 1/8, ¼ and ½.

9. Using a Ruler
Use a Ruler to measure the following items and record your data:
A brand new crayon
Your pencil
A large paper clip
The width of a piece of notebook paper
The length of your desk
The width of your shoe
The length of your index finger
Textbook page 523 Extension of Activity 3
Precision measurement exercises on textbook page 524
Be sure to give a precision measurement 

10. Estimation/Guessamation
When determining length we often use estimation.
Use your reasoning skills to determine the length of the following and then measure the actual (precision) measurement:
an marker
paper clip
pencil
an object of your choice

11. Linking up to Science
Echoes can be used to measure distance. Weather forecasters send a sound waves toward weather system such as tornadoes or hurricanes. They time how long it takes the waves to reach a system, “bounce off” it and return. This method of measuring distances is called sonar.
Solve.
A ship was in a heavy fog. The navigator knew there was an iceberg nearby, and sounded a horn. Four seconds later he heard an echo returning from the iceberg. Sound travels about 1,100 feet per second in the air. About how far was the iceberg from the ship?
Sound travels about 1 mile per second in water. Suppose a ship’s sonar emits a loud sound under the water. Four miles away there is a submarine. How long will it be before the echo reaches the ship?
Write a problem using echoes to measure distances. Have a classmate solve your problem.
Textbook page 525- Problem Solving

12. Metric Length
10 millimeters (mm) = 1 centimeter (cm) 100 centimeters = 1 meter (m) 1,000 meters = 1 kilometer (km)
Use the bicycle to help your remember the Metric length terms:
A millimeter (mm) is about the thickness of a spoke on a bicycle wheel.
A centimeter (cm) is about the thickness of a bicycle pedal.
A meter (m) is about the height of a bicycle.
A kilometer (km) is how far you can ride a bicycle in a few minutes.
Textbook page 526
Copy chart into Math Notebook
I could not find a Metric ruler to copy.
Go to the wikipage for Metric ruler game. Open website before starting the lesson.

13. Estimate, Measure and Record
Estimate and measure each using the Metric units. Record your data in a table.
The length of your desk
The distance from your desk to the door
Your height
Thickness of your Math book
Width of your pencil
Textbook page 526 Activity Extension

14. Making Connections
You can find the length or height of something that you can not reach by making connections.
Find the height of this building.
The height of one floor is 14.5 meters.
Determine how many floors this building has.
Multiply the numbers of floors by the height of one floor to determine the height of this building.
Textbook page 527
What if:
The height of one floor of this building were meters?
Explain how to find the height of the building.

15. Find the Measurement using Metric Units:
The length of a road 12 blocks long if 1 block is km long
The height of a building 12 stories high if 1 story is 13 m long
The length of a floor 92 tiles long if 1 tile is 30 cm long.
Textbook page 527 Practice and Problem Solving
Be sure to show your work 

16. Change Linear Units
To change from small units into Large units: Divide To change from Large units into smaller units: Multiply
Change the Units:
2 ft = ___ in
2. 5m = ___ cm
5 yd = ___ ft
20 mm = __ cm
60 in = __ ft
2 km = __ m
24 ft = __ yd
9,400 m = __ km
Textbook pages
Student may only use their charts in their notebooks.
No notes No help 
Yes, you can use a calculator 

17. Do you Agree? Explain. Anne says 0.2 cm is the same as 2 mm.
Joel says that 40 cm is the same as 0.4 m.
Jason has 14 yd of string. He used 5 yd 8 in for his project. He claims that he has 8 yd
2 in left.
4. Grace has 13 ft of fabric. She only needs 4 ¼ yds. She thinks she has enough fabric.
Textbook page Is there an Error?
Students may work in pairs to discuss and defend their answers.

18. Problem Solving/ Relating Systems
One yard is slightly shorter than 1 meter
One mile is slightly longer than 1.5 kilometers.
One gallon is about 3.75 liters.
One pound is about 0.5 kilogram.
Use the chart above to solve the following problems:
If a kilometer is about 6 city blocks long, about how many city blocks long is one mile?
A football field is 120 yards long, including the end zones. Is a football field shorter or longer than 120 meters?
Marly’s is running in two 5K races this month. She is running in a 10K race next month. Will Marly’s run more or less than 10 miles in all?
Carmen’s poodle, Tinkerbell weighs 8 kilograms. Does Tinkerbell weigh more than 10 pounds?
Textbook page 531- Problem Solving- Thinker’s Corner

19. Getting Ready for the EOG
Tiffany is installing new molding in her house. The table shows the amounts of molding she needs for some rooms.
Rooms
Perimeter
Bedroom
44 feet 6 inches
Living Room
14 yards
Den
31 feet 8 inches
How much molding does she need for the bedroom and living room?
58 feet 6 inches
58 yards 6 inches
76 feet 2 inches
86 feet 6 inches
Textbook page 531- Getting Ready for the EOG Test.
Work in pairs, justify your answer.
How much more molding does Tiffany need for the bedroom than for the den?
13 feet 8 inches
13 feet 2 inches
12 feet 10 inches
12 feet 8 inches