UNIT X 234 | UNIT 6 Instructional Routine: Mathematics p. Txxxii Measurement A • Use graphics to learn new concepts Tell students to read the informational text. Point out that the units of measurement in the columns of the chart are different. Say: We use units of measurement so that we can measure weight, volume, and length (Point at the scale, yardstick, and measuring cups.) As you point, say: Even though the units of measurement in the metric system and the US customary system are different, the actual weight, volume, or length of something does not change when we use different units of measurement. Hold up a book. Measure it with a ruler, in inches and in centimeters. Point out the different size of 1 centimeter and 1 inch. Say: This book is 11 inches long; it is also 30 centimeters long. Does that change the size of the book? Why? (No, the size does not change; what changes is the unit of measurement. Inches are a larger unit of measurement than centimeters, so we need to count fewer inches to figure out how long it is.) • Listen actively to build academic vocabulary Use the vocabulary routine for metric system and US customary system. Play the audio and direct students to listen closely for the new words as they follow along. Then replay the audio to build comprehension of the content. Essential Question: How are the units of the metric and US customary systems different? Use academic language Read aloud the Essential Question and elicit answers. Direct students to use pictures and numbers to illustrate that the systems have different units of measurement, but that using different measuring systems doesn’t change the weight, volume, or length of an object. EXPLORE AND LEARN DIFFERENTIATED INSTRUCTION Scaffold Have students go around the room and measure items in inches and in centimeters. Then have a discussion about each object. Ask: Did the size of the object change when you measured, it or did your system of measurement change? Amplify Write the formula for calculating volume on the board (length × width × height). Give students tape measures and have them calculate the volume of the room using meters and feet. Check their answers. Then have a discussion about the size of the room. Ask: Did the size of the room change when you measured it, or did your system of measurement change? Measurement A Read the informational text. metric system US customary system length millimeter centimeter meter kilometer inch foot yard mile weight milligram centigram gram kilogram ounce pound ton volume milliliter centiliter liter kiloliter teaspoon tablespoon cup pint quart gallon Metric and US Customary Units The metric system is used throughout most of the world. The US customary system is primarily used in the United States. Each system of measurement has units for length, weight, and volume. How are the units of the metric and US customary systems different? ? ESSENTIAL QUESTION 1cup mL mL 120 60 1 cup 1/2 cup 1/4 cup Cups Sticks Scales CON22_ArtSpecForm_L5U6_p234 length weight volume 1cup mL mL 120 60 Cups 1cup mL mL 120 60 1 cup 1/2 cup 1/4 cup Cups Sticks Scales CON22_ArtSpecForm_L5U6_p234 UNIT 6 234 CONNECT TO Mathematics UNIT 6 / CONNECT TO MATHEMATICS
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