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

2. 1. Why Metric A. Metric is easy because it’s based on POWERS OF 10! B. Our system (the English system) is all over the place C. All scientists use metric

3. 2. WHAT DO I NEED TO KNOW? A.Our base units 1.Mass (gram == g) 2.Length (meter == m) 3.Volume (liter == L)

4. UNITS OF MEASURE What metric unit measures… length? Meter volume? Liter mass/weight? Gram Volume of a solid cm3

5. B.Our BIGGER prefixes 1.Kilo (k) – 1000 x base 2.Hecto (h) –100 x base 3.Deca (da) –10 x base

6. C.Our SMALLER prefixes 1.Deci (d)—1/10 x base 2.Centi (c) –1/100 x base 3.Milli (m) –1/1000 x base

7. Abbreviations Kilometers-km. Kilometers-km. Hectometers –hm. Hectometers –hm. Dekameters- dam. Dekameters- dam. Decimeters- dm. Decimeters- dm. Centimeters- cm. Centimeters- cm. Millimeters- mm. Millimeters- mm. Kiloliters-kL. Hectoliters –hL. Dekaliters- daL. Decileters- dL. Centiliters- cL. Milliliters- mL. Kilograms-kg. Hectograms –hg. Dekagrams- dg. Decigrams- dg. Centigrams- cg. Milligrams- mg.

8. 3. How do I remember this? KING KING HENRY HENRY DIED DIED BY BY DRINKING DRINKING CHOCOLATE CHOCOLATE MILK MILK

11. Try these conversions using the ladder method. 1000 mg = _______ g 1 L = _______ mL160 cm = _______ mm 14 km = _______ m109 g = _______ kg 250 m = _______ km Conversion Practice Compare using, or =. 56 cm 6 m 7 g 698 mg

12. 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 Metric Conversion Challenge

13. Compare using, or =. 25) 63 cm 6 m 27) 5 g 508 mg 29) 1,500 mL 1.5 L 26) 536 cm 53.6 dm 28) 43 mg 5 g 30) 3.6 m 36 cm

14. Check your answers! Conversion Challenge Abbreviations: 1. kg 2. m 3. g 4. mL 5. mm 6. L 7. km 8. cm 9. Mg Try these conversions, using the ladder method. 1. 2 g 2. 104000 m 3. 4.8 m 4. 5600 g 5..8 cm 6. 5000 ml 7. 0.198 kg 8. 0.075 l 9. 0.5 m 10. 560 cm 11. 160 mm 12. 2.5 km 13. 65000 mg 14. 63 mm 15. 0.12 g 16. < 17. > 18. = 19. = 20. < 21. >

15. Scientific Notation A way to express very small or very large numbers Example:  12345 = 1.2345 x 10 4  0.00456 = 4.56 x 10 -3 __________ – must be between 1 and 9 _________ ____________ – the # of times the decimal was moved (+) to the left (-) to the right

16. Scientific Notation 56934= 1280 = 0.0345= 0.0000037 =

17. Scientific Notation 2.347 x 10 -3 = 8.98736 x 10 4 = 3.48763 x 10 -4 = 5.7654 x 10 5 = Reverse it! (+) right (-) left

18. BELL WORK With your partner, come up with 5 examples of metrics in everyday life. With your partner, come up with 5 examples of metrics in everyday life. Compile the list in the “Notes” section of your binder. Compile the list in the “Notes” section of your binder. Be prepared to share with the class Be prepared to share with the class

19. Some Examples of Metrics