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please quietly copy onto your class notebook 9/15/10 Our Math Goal: To describe situations that involve calculating with positive and negative integers. Homework: p.432 Explore #1-4 1. Write a sentence using the word negative. 2. Write about two times you have seen negative numbers. 3. If Mr. Wu has $10 in his bank account. He buys a $20 fishing pole with his bank card. What is his bank balance? 4. What happens when I win $5, then lose $5? OPPOSITES • Jeremy got 10 extra points for finishing his project. But he got penalized 10 points for talking. • The spider crawled 10 inches up the water spout. Then the rain came and washed the spider 10 inches down. Joe walked 3 miles north of Safeway, 3 miles east of Safeway, 3 miles South of Safeway, then 3 miles west of Safeway. Where is Joe now. Safeway a ) 1.25 b)1.25 1 c) 4 1 d) 4 3 e)2 4 3 f )2 4 g )4.5 h) 4.5 i )75% j ) 75% THE NUMBER LINE! Copy the number line above, then write the quantities onto their correct positions. What did Cinderella say to the photographer? • Try this worksheet! Individual Work: This is a problem straight from the 2007-2008 7th grade HSA Quarter 1 assessment: 12. Jennifer used the expression -10 + (-3) to solve a problem. Describe a problem situation that Jennifer could represent with this expression. Explain how the integers in the expression relate to the situation. EXIT PASS PART A: Answer the following with your partner: 1. What is -56 + 56 = ? 2. What is 48 + -70 = ?