36 | Unit 1 Brain : Money : Cook : Money : Cook : 200% 200% Money : Cook : Welcome to math! CONNECT TO Mathematics Algebra is about relationships between numbers and quantities. Letters represent the unknown quantities. 2 + x = 5 y – 9 = 11 Geometry is about shapes, sizes, and the relationships between figures. Some examples of geometric shapes and figures are: circle square point line angle Which area of math is it? Match. Explain. a. arithmetic b. algebra c. geometry 1. ______ 2. ______ 3. ______ In school, you study different areas of math. Arithmetic is about numbers. The basic operations addition 6 + 4 = 10 six plus four equals ten subtraction 12 – 5 = 7 twelve minus five equals seven multiplication 3 x 3 = 9 three times three equals nine division 18 ÷ 6 = 3 eighteen divided by six equals three Grammar Languages Language Arts Math Science Social Studies Electives Writing CONTENT 36 thirty-six | Unit 1 DIFFERENTIATED INSTRUCTION Scaffold Write different examples of simple arithmetic on the board and see if students know the answers. Invite them to use their home language as a bridge. Culture note In other countries and international areas, students may have seen different symbols for division. (Long division is sometimes depicted differently.) Also, decimal points are indicated differently in some languages (e.g., sometimes they are shown as a comma). Point out shapes and figures around the room (circle, square, line, etc.) and name each. Ask: What area of math am I talking about—geometry or arithmetic? If students are unclear, ask again as a yes/no question. Amplify Have students share additional information about each math area. Ask how it was shown in their previous school setting. What symbols were used, and how it was expressed. For example, multiplication and division may be depicted differently. UNIT 1 / CONNECT TO MATHEMATICS Instructional Routine: Vocabulary p. Txxv Welcome to math! Point out that there are different areas of math. Read aloud or play the audio for “Welcome to math!” Invite students to share what they know about each area. Academic vocabulary Briefly introduce the terms arithmetic (addition, subtraction, multiplication, and division), algebra, and geometry. Point out the multiple meaning word figure and note that in geometry it means a shape or form. You do not need to add these to the word wall at this time as they come up in later units in more meaningful ways. Reiterate that these are different areas of study in math. Name areas of math Have students view each picture. Model how to determine the area of math. Ask: What math do you see in the first picture? I see lines, shapes, and figures. I think this means the boy studies geometry. The answer is c, geometry. ANSWERS 1. c; 2. b; 3. a EXPLORE AND LEARN PRACTICE Languages Arts Science Social Studies Electives Writing thirty-six | 66
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