Academic content and language Different from unit to unit, other elective topics include: Business, Computer Science, Drama, Journalism, World Languages, Music, Physical Education, and Career and Technical Education. Engineering design What are the objects made of? The backpack is made of . The shirt is made of . The chair is made of . The school supplies are made of and . The objects are made of and . What do you think about when you design an object? ? ESSENTIAL QUESTION Materials wood canvas plastic steel cotton glass CONNECT TO Science Grammar Languages Language Arts Math Science Social Studies Electives Writing Readings 98 ninety-eight | Unit 3 CONTENT IMPORTANT In the United States, you put a decimal point between the whole number and the decimal part. 1.21 one and twenty-one hundredths You use a comma to show a new period like thousands. 1,234 one thousand two hundred thirty-four CONNECT TO Mathematics Grammar Languages Language Arts Math Science Social Studies Electives Writing Place value How can using the structure of mathematics help you? ? ESSENTIAL QUESTION How does understanding place value help you? The place of a digit in a number determines its value. The place value structure of numbers helps you determine the size of objects in the classroom. thousands period ones period decimals hundred thousands ten thousands thousands hundreds tens ones tenths hundredths thousandths 1 4 3 2 5 6 8 9 7 , . in words one hundred forty-three thousand two hundred fifty-six and eight hundred ninety-seven thousandths standard form 143,256.897 expanded form 1 × 100,000 + 4 × 10,000 + 3 × 1,000 + 2 × 100 + 5 × 10 + 6 × 1 + 8 × 0.1 + 9 × 0.01 + 7 × 0.001 Readings Match each classroom object with a measurement. Explain your answer. 1. the height of a classroom door 2. the width of the clock 3. the length of the classroom a. 0.6 feet b. 60 feet c. 6 feet 106 one hundred six | Unit 3 CONTENT Connect to Science Connect to Mathematics Connect to Electives Connect to Social Studies The content sections provide an explicit focus on building academic literacy while cultivating English language development. 10 WALK-THROUGH Get Ready! 9–12
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