UNIT X UNIT 1 | 35 B Interpret data Read the directions and the first item in Activity B aloud. Ask: What is the whole number part? (two) Place your finger there on the number line. What is the fractional part? (one fourth) Move your finger to that number. What letter corresponds to that number? (f) Have students complete Activity B using this process for each number. ANSWERS 1. f; 2. b; 3. g; 4. c; 5. d; 6. e; 7. h; 8. a C Interpret data Read the directions and the first item in Activity C aloud. Elicit from students the process to follow to find where the number goes on the number line and complete the first example together. Have students complete Activity C. ANSWERS 1. first vertical line between 0 and 1; 2. third vertical line between 5 and 6; 3. second vertical line between 4 and 5; 4. third vertical line between 4 and 5; 5. first vertical line between 3 and 4; 6. second vertical line between 1 and 2; 7. second vertical line between 2 and 3 D Make connections Help students connect the idea of measuring rainfall to cities across our country. Read the directions. Have students work in pairs to complete Activity D. Note that students need to draw their number lines accurately and neatly as this will help them to plot the cities’ precipitation. Remind students that they can use abbreviations for the cities on the number line to save space. ANSWERS Philadelphia (vertical line between 41 and 42), Louisville (immediately before 45), Tampa (between 46 and the vertical line), Atlanta (between the vertical line and 50), New York (immediately before 50) Practice Book p. 18 Assessment Program p. 10 FORMATIVE ASSESSMENT DIFFERENTIATED INSTRUCTION Scaffold Remind students of the process for plotting the decimal and fraction numbers on a number line. Refer to the number lines that you have drawn on the board. Amplify Have students research the annual precipitation totals for five countries. Then they can exchange their lists with a partner, who plots the totals on a number line. As a final challenge, direct students to write the equivalent fractions for the decimal totals. Write: Comparing and ordering numbers Define fraction and decimal and provide an example of each. Draw a number line and write three equivalent decimals and fractions. Look at the precipitation totals for five states. Draw a number line. Put the states in order from least to most precipitation. Alabama: 32.4, Arkansas: 36.7, Florida: 27.3, Georgia: 28.1, Louisiana: 30.5, North Carolina: 32.5 PRACTICE COMMUNICATE B Match each number with the letter that shows its location on the number line. 1. 2.25 2. 3 4 3. 3 1 2 4. 1 1 4 5. 1.75 6. 2 7. 3.75 8. 0.50 C Copy the number line. Then, put the following numbers on the number line. 1. 0.25 2. 5.75 3. 4.5 4. 4 3 4 5. 3 1 4 6. 1.5 7. 2 1 2 D Making connections Look at the precipitation chart. Draw a number line. Put the cities in order from least to most precipitation. city average annual precipitation (inches) Atlanta, Georgia 49.7 Louisville, Kentucky 44.9 New York, New York 49.9 Philadelphia, Pennsylvania 41.5 Tampa, Florida 46.3 0 1 2 3 4 5 a b c d e f g h 40 44 42 46 49 41 45 48 43 47 50 0 1 2 3 4 5 6 UNIT 1 35 UNIT 1 / CONNECT TO MATHEMATICS
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