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Understanding Length: English vs. Metric Units

This lesson explores the comparison between English and metric units of length, detailing conversions such as miles to kilometers, yards to meters, and inches to centimeters. Students will learn about standard metric units including meters, centimeters, and millimeters, and how to measure lengths accurately using rulers. The lesson includes interactive questions to reinforce understanding of which units measure greater lengths and offers visual aids to assist in grasping these concepts. A video demonstration on measuring in meters complements the learning experience.

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Understanding Length: English vs. Metric Units

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

  2. 1 mile 1.6 kilometers 1 yard = 0.9444 meters 1 inch = 2.54 centimeters 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 Left Image: http://webapps.lsa.umich.edu/physics/demolab/controls/imagedemosm.aspx?picid=1167Right Image: http://share.lancealan.com/N800%20ruler.jpg

  3. A. 1 meter or 105 centimeters B. 4 kilometers or 4400 meters C. 12 centimeters or 102 millimeters D. 1200 millimeters or 1 meter km Metric Units 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?

  4. 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. Measuring Length How many millimeters are in 1 centimeter? Ruler: http://www.k12math.com/math-concepts/measurement/ruler-cm.jpg

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