Lesson 1 Length T Trimpe 2008 http sciencespot

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

English vs. Metric Units Which is longer? A. 1 mile or 1 kilometer B. 1 yard or 1 meter 1 mile 1. 6 kilometers C. 1 inch or 1 centimeter 1 inch = 2. 54 centimeters 1 yard = 0. 9444 meters 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

Metric Units 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) Click the image to watch a short video about the meter. 1 Meter = 1000 Millimeters (mm) Which is larger? 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 How many millimeters are in 1 centimeter? 1 centimeter = 10 millimeters 1 decimeter (dm) = 10 centimeters 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

Challenge 1 L. La. Rosa http: //www. middleschoolscience. com for T. Trimpe 2008 http: //sciencespot. net/

Find the length (antennae to feet) of the following insects to the nearest whole or half cm:

Find the length (antennae to feet) of the following insects to the nearest whole or half cm: 3. 5 cm 2 cm 4. 5 cm

Challenge 2 L. La. Rosa http: //www. middleschoolscience. com for T. Trimpe 2008 http: //sciencespot. net/

Find the lengths of the following pink lines to the nearest mm:

Find the lengths of the following pink lines to the nearest mm: 77 mm 44 mm 92 mm

Challenge 3 L. La. Rosa http: //www. middleschoolscience. com for T. Trimpe 2008 http: //sciencespot. net/

Complete the following conversions: 3 cm = _____ mm 5 mm = _____ cm 15 cm = ____ mm 19 mm = ____ cm 49 cm = ____ mm 74 mm = ____ cm 103 cm = ____ mm 158 mm = ____ cm

Complete the following conversions: 3 cm = 30 mm 5 mm = 0. 5 cm 15 cm = 150 mm 19 mm = 1. 9 cm 49 cm = 490 mm 74 mm = 7. 4 cm 103 cm = 1, 030 mm 158 mm = 15. 8 cm X 10 ÷ 10

Challenge 4 L. La. Rosa http: //www. middleschoolscience. com for T. Trimpe 2008 http: //sciencespot. net/

Find the lengths of the following pencils in cm & mm: _____ cm _____ mm Images from http: //www. bgfl. org/bgfl/custom/resources_ftp/client_ftp/ks 2/maths/measures/index. htm

Find the lengths of the following pencils in cm & mm: 12. 5 cm 125 mm 4 cm 40 mm 10 cm 100 mm 14. 5 cm 145 mm Images from http: //www. bgfl. org/bgfl/custom/resources_ftp/client_ftp/ks 2/maths/measures/index. htm

Challenge 5 L. La. Rosa http: //www. middleschoolscience. com for T. Trimpe 2008 http: //sciencespot. net/

Complete the following conversions for centimeters and meters: 1, 955 cm = ___ m 1. 8 m = ____ cm 178 cm = ____ m 0. 56 m = ____ cm 2, 299 cm = ___ m 2. 3 m = ____ cm 42 cm = ____ m 0. 02 m = ____ cm

Complete the following conversions for centimeters and meters: 1, 955 cm = 19. 55 m 1. 8 m = 180 cm 178 cm = 1. 78 m 0. 56 m = 56 cm 2, 299 cm = 22. 99 m 2. 3 m = 230 cm 42 cm = 0. 42 m 0. 02 m = 2 cm ÷ 100 x 100