1. Warm up: Why do all scientists use the metric system?
Thursday, September 23, and Friday, September 24.
Focus: Metric Measuring Length
CONTENT OBJECTIVE: SWBAT comprehend the use of metrics in science by reviewing and practicing measuring length, mass and volume.
LANGUAGE OBJECTIVE: I will be able to explain why we use metrics in science by answering today’s Warm up.
What’s Up?
(L) Warm Up and Reflection
Vocabulary for Today…(2 Words)
Metric Mania Stair Step Method
video /notes/ppt (R)
Conversion Challenge (Lab Groups)
View Metric Mania Length ppt on Canvas and take notes. (R)
(Lab Groups)
Begin Length Lab
Exit Ticket Reflection (L)

2. Vocabulary Words 9/10/15
comprehend: grasp mentally; understand
I simply could not comprehend what had happened.
metric system: the decimal measuring system based on the meter, liter, and gram as units of length, capacity, and weight or mass.
In science always remember to use the metric system to measure.

3. Warm up: Metric System
It is a universal way of measurement, making it so all scientists use the same way of measuring.
Universal - done by all people or things in the world or in a particular group

5. Metric Conversions Ladder Method
T. Trimpe

6. How many jumps does it take?
Ladder Method 1 2 3
KILO 1000 Units
HECTO 100 Units
DEKA 10 Units
DECI 0.1 Unit
Meters Liters Grams
CENTI 0.01 Unit
MILLI Unit
How do you use the “ladder” method?
1st – Determine your starting point.
2nd – Count the “jumps” to your ending point.
3rd – Move the decimal the same number of jumps in the same direction.
4 km = _________ m
Starting Point
Ending Point
How many jumps does it take? 4. 1
__. 2
__. 3
__.
= 4000 m

7. Conversion Practice Try these conversions using the ladder method.
1000 mg = _______ g 1 L = _______ mL 160 cm = _______ mm
14 km = _______ m 109 g = _______ kg 250 m = _______ km
Compare using <, >, or =.
56 cm m g mg

8. Your Task Work as a group to complete the Metric Conversion Challenge
When you are finished, check your work with the correcting sheet or KEY.
With your table partner, view the Metric Mania Length power point on Canvas, take notes (WS).
Begin Metric Measuring Length Lab. (Materials are on the Gray Cart at the front of the room.)
When you finish turn into the basket for a grade.

9. Metric Conversion Challenge
Write the correct abbreviation for each metric unit.
1) Kilogram _____ 4) Milliliter _____ 7) Kilometer _____
2) Meter _____ 5) Millimeter _____ 8) Centimeter _____
3) Gram _____ 6) Liter _____ 9) Milligram _____
Try these conversions, using the ladder method.
10) 2000 mg = _______ g 15) 5 L = _______ mL 20) 16 cm = _______ mm
11) 104 km = _______ m 16) 198 g = _______ kg 21) 2500 m = _______ km
12) 480 cm = _____ m 17) 75 mL = _____ L 22) 65 g = _____ mg
13) 5.6 kg = _____ g 18) 50 cm = _____ m 23) 6.3 cm = _____ mm
14) 8 mm = _____ cm 19) 5.6 m = _____ cm 24) 120 mg = _____ g

10. Compare using <, >, or =.
25) 63 cm m ) 5 g mg ) 1,500 mL L
26) 536 cm dm 28) 43 mg g ) 3.6 m cm

11. CONTENT OBJECTIVE: Do you comprehend the use of metrics in science after reviewing and practicing measuring length?
LANGUAGE OBJECTIVE: Can you explain why we use metrics in science?

12. What three things did you learn about metric measuring?
TODAYS REFLECTION
What three things did you learn about metric measuring?
2 Ways you contributed to your group
1 Question you still have

13. T. Trimpe 2008 http://sciencespot.net/
Lesson 1: Length
DIRECTIONS: With your lab group review this lesson and complete the note sheet. When you are finished, start practicing Metric Measuring Length Lab. Your lab sheet will be collected for a grade.
T. Trimpe

14. English vs. Metric Units
Which is longer?
A. 1 mile or 1 kilometer
B. 1 yard or 1 meter
C. 1 inch or 1 centimeter
1.6 kilometers
1 mile
1 yard = meters
1 inch = 2.54 centimeters
Left Image: Right Image:

15. Click the image to watch a short video about the meter.
Metric Units km m cm mm
The basic unit of length in the metric system in the meter and is represented by a lowercase m.
Standard: The distance traveled by light in absolute vacuum in 1⁄299,792,458 of a second.
Metric Units
1 Kilometer (km) = 1000 meters
1 Meter = 100 Centimeters (cm)
1 Meter = 1000 Millimeters (mm)
Click the image to watch a short video about the meter.
Which is larger?
A. 1 meter or 105 centimeters
B. 4 kilometers or 4400 meters
C. 12 centimeters or 102 millimeters
D millimeters or 1 meter

16. Measuring Length How many millimeters are in 1 centimeter?
1 centimeter = 10 millimeters
How many millimeters are in 1 centimeter?
What is the length of the line in centimeters? _______cm
What is the length of the line in millimeters? _______mm
What is the length of the line to the nearest centimeter? ________cm
HINT: Round to the nearest centimeter – no decimals.
Ruler:

17. Length Lab 1. Work with your lab group.
A. You may break up into smaller groups. Everyone must practice measuring.
2. Complete each problem with accuracy.
A. Measure carefully. REMEMBER label your measurements using proper units.
3. Use your lab time wisely, don’t divide and conquer!
4. REMEMBER you are still in class.
5. Your LAB will be turned in for a grade.