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

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

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/N800%20ruler.jpg km m Metric Units 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 1299,792,458 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.k12math.com/math-concepts/measurement/ruler-cm.jpg Physical Science Length

Challenge 1 L. LaRosa 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 5 cm

2 cm 4.5 cm Physical Science Length Challenge 2 L. LaRosa 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 Physical Science Length

Challenge 3 L. LaRosa 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 15 cm =

mm 49 cm = mm 150 490 103 X cm10 = 5 mm =

0.5 cm 19 mm = 1.9 cm 74 mm = 7.4 cm 158 mm = cm

15.8 10 Physical Science Length Challenge 4 L. LaRosa http://www.middleschoolscience.com for T. Trimpe 2008 http://sciencespot.net/ Find the lengths of the following pencils in cm & mm: _____ cm

_____ mm _____ cm _____ mm _____ cm _____ mm _____ cm _____ mm Images from http://www.bgfl.org/bgfl/custom/resources_ftp/client_ftp/ks2/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/ks2/maths/measures/index.htm Physical Science Length

Challenge 5 L. LaRosa 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 178 cm = 1.78 m

2,299 cm = 22.99 m 100 42 cm = 0.42 m 1. 8 m = 180 cm 0.56 m = 56 cm 2.3 m = 230 cm 0.02 m = 2 cm x 100

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