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Kelly Hudson (khudson@steds.org)

(A2) Metric Units of Length

Grades: 4th Grade, 5th Grade, 3rd Grade
Subjects: Science

Student Instructions

Scientists use the metric system to measure length. Measuring is a way to describe an object with numbers. Length is the number of units that fit along one edge of something. Tools for measuring length are a ruler, a meter stick, and a tape measure. Units for measuring length are the millimeter (mm), centimeter (cm), decimeter (dm), and meter (m). It is important that you be able to visualize the size of units. A meter is about the size of your arms stretched out. A decimeter is about the width of your hand. A centimeter is about the width of your finger, and a millimeter is about the width of a pencil tip. Hands-on Activity 1. Click add response to open the template. 2. Use your camera to take personal reference pictures for a meter, a decimeter, a centimeter, and a millimeter. A tool must be used in each photo in order to see the real size. Crop the photo. 3. Upload your photos to each slides 1-4. 4. Follow the directions on each slide to find an object about the same size as the unit, smaller than the unit, and larger than the unit. 5. Record on each slide using the required content and vocabulary words. 6. Record the purpose of the activity. 7. Click the green check to save. 8. Tag your partner. Required Content/photo o personal reference for metric units o Meter – personal reference and explanation of meter and comparison photos (slide 1) o Decimeter – personal reference and explanation of decimeter and comparison photos (slide 2) o Centimeter – personal reference and explanation of cm and comparison photos (slide 3) o Millimeter – personal reference and explanation of mm and comparison photos (slide 4) o purpose of activity/what you learned Required Vocabulary o Metric System o Tool o Unit o Ruler o Length o Measure o Meter Stick