Lesson 1 Length T Trimpe 2008 http sciencespot

Lesson 1: Length T. Trimpe 2008 http: //sciencespot. net/

Visualize the unit! 1 Kilometer ___ 1 meter ___ C B 1 centimeter ___ 1 millimeter ___ A D Left Image: http: //webapps. lsa. umich. edu/physics/demolab/controls/imagedemosm. aspx? picid=1167 Right Image: http: //share. lancealan. com/N 800%20 ruler. jpg

1 mm 1 cm

Metric Units: PROVE IT The basic unit of length in the metric system in the meter and is represented by a lowercase m. Metric Units – With your partner use the meter stick to figure out each measurement. 1000 1 Kilometer (km) = ______ meters 100 1 Meter = ________ Centimeters (cm) 1000 1 Meter = ________ Millimeters (mm) 10 1 Centimeter = ______ Millimeters (mm) 100 10 Centimeters = _____ Millimeters (mm) 85 8. 5 Centimeters = _____ Millimeters (mm) Which is larger? Rally Coach: Partner A (A and B) Partner B (C and D) A. 1 meter or 105 centimeters C. 12 centimeters or 102 millimeters B. 4 kilometers or 4400 meters D. 1200 millimeters or 1 meter

Measuring Length- Individually How many millimeters are in 1 centimeter? 1 centimeter = 10 millimeters 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: http: //www. k 12 math. com/math-concepts/measurement/ruler-cm. jpg

Metric Conversions Ladder Method T. Trimpe 2008 http: //sciencespot. net/

King Henry Died Monday Drinking Chocolate Milk

Now Try!

Ladder Method 1 2 KILO 1000 Units HECTO 100 Units 3 DEKA 10 Units Meters Liters Grams DECI 0. 1 Unit How do you use the “ladder” method? 1 st – Determine your starting point and end point 2 nd – Count the “jumps” to your ending point. 3 rd – Move the decimal the same number of jumps in the same direction. CENTI 0. 01 Unit MILLI 0. 001 Unit 4 km = _____ m Starting Point Ending Point How many jumps does it take? 4. __. __. = 4000 m 1 2 3

Conversion Practice Try these conversions using the ladder method. 1. 000 1000 mm = _____ m SP 1 -2 -3 1000. EP

Conversion Practice Try these conversions using the ladder method. 0. 000015 km 15 mm = _____ SP 1 -2 -3 - 4 -5 -6 . 0 000015. EP

Conversion Practice: Rally Coach – use the white board to show your work. Partner A (A, C, E, and H) and Partner B (B, D, F and I) REMEMBER: You must explain to your partner what you are doing in each step! A. 1 m = _______ mm B. 160 cm = _______ mm C. 130 mm = ____km D. 14 km = _______ m E. 109 m = _______ km F. 250 m = _______ km Compare using <, >, or =. ( convert to meters) H. 56 cm 6 m I. 7 m 698 mm

Conversion Practice: Answers 1000 mm A. 1 m = _______ B. 160 cm = _______ 1600 mm 0. 000130 C. 130 mm = ______km D. 14 km = _______ 14000 m E. 109 m = _______ 0. 109 km F. 250 m = _______ 0. 250 km Compare using <, >, or =. H. 56 cm 6 m I. 7 m 698 mm

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 = _______ m. L 20) 16 cm = _______ mm 11) 104 km = _______ m 16) 198 g = _______ kg 21) 2500 m = _______ km 12) 480 cm = _____ m 17) 75 m. L = _____ 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

Compare using <, >, or =. 25) 63 cm 26) 536 cm 6 m 53. 6 dm 27) 5 g 28) 43 mg 508 mg 5 g 29) 1, 500 m. L 30) 3. 6 m 1. 5 L 36 cm