In this section we will discover how to add integers. You’ll notice adding positive integers is the same as always. However, when adding negative numbers, it sometimes can be tricky!!! Examples from the board

Before we continue; can you solve this situation. Bobby receives $10 every Friday as an allowance. On Saturday, he spent $2 on candy. When he was walking home from the store he found a $5 bill. He decided to go back to the store and rent a movie. The movie cost him $4. How much money did Bobby have left over?

Complete #’s: 2, 3 on page 207 What conclusions can you make about the addition of integers? When adding two positive integers together the answer will always be positive. When adding two negative integers together the answer will always be positive. When adding negative and positive integers together the answer will be the same sign as the largest numeral value.

Center 2: Go to the following link: g_1_t_1.html adding-integers-game/math-racing-adding- integers-game.html It will be on my homepage…. Center 3: Card Game Reach the sum!!

Subtracting integers is similar to the subtraction your used to however, it can become tricky when you start subtracting opposite signs. Discover the Math

Is there a rule we can follow that can help subtracting integers easier???? When the signs of the integers are different and you are subtracting; you can ADD THE OPPOSITE For example: (-5)-(-7)=2(-5)+(7)= 2

Complete #’s: 2, 3 on Page 216 Center 1: : 1, 3, 4, 5, 9, 12, 14, 15, 17, 19 : 5, 9, 10, 11, 12, 14, 15, 17, 18, 19 Bonus Question: 13

Center 2: Go to the following link: thmeticFour/ You need a partner for this game. subtracting-integers-game/math-racing- subtracting-integers-game.html Select Integer Subtraction and begin game Center 3: Card Game! Find the difference

Pay close attention to this section. There are rules that you need to become familiar with. Discover the math! What are some rules that we can apply to the multiplication of integers?

New Rules:  The product of two positive integers is always: POSITIVE  The product of two negative integers is always: POSITIVE  The product of two integers with opposite signs is always: NEGATIVE

Complete #’s: 2, 3 on Page 222 *Review as a class example 1, 2 page 223* Center 1: : 1, 3, 4, 5, 6, 8, 13, 15, 19, 20 : 8, 9, 10, 11, 13, 14, 15, 17, 19, 20 Bonus Question: # 16

Center 2: You have a few choices… Partner Game /ArithmeticFour/ /ArithmeticFour/ s/integer-warp/integer-warp.html saintegermultiply.html Center 3: CARD GAME!!!

If you can multiply integers then you can most certainly divide them as well. The four rules you discovered in the last section are the same for dividing! Discover the Math!!

Complete #’s: 1, 3 on Page 231 Center 1: : 1, 3, 6, 7, 8, 10, 14, 19, 20, 22 : 8, 10, 12, 13, 14, 16, 19, 20, 21, 22 Bonus Question: #15

Center 2: Again you get to choose: Partner game ies/ArithmeticFour/ a/saintegerdivision.html Center 3: Card Game!!!!!

BEDMAS You have done this once before. Whenever you have a math equation with more than one operation you should automatically be thinking: BEDMAS Brackets – Exponents – Division – Multiplication – Addition – Subtraction Discover the Math!!!

Communicate Key Ideas: Page 237 1, 3 Center 1: : 1, 3, 5, 6, 7, 8, 9, 10, 12, 17 : 6, 7, 8, 9, 10, 11, 12, 15, 16, 17 Bonus Question: # 13

Center 2: You need a partner for this game: Jeopardy/Integers-Jeopardy.html Subtracting – Addition only: game.html Partner game:

Center 3: There will not be a center 3 for this section. We will still rotate as usual however, each group will remain in center 1 for two rotations.

Center 1: Check your Understanding Page 242: : 1, 2, 4, 5, 6, 7, 8, 9, 12, 13 : 1, 2, 3, 4, 5, 6, 9, 10, 12, 13 Bonus Question: #11

Center 2: You may choose any online game that has been introduced throughout the unit. The links are on the homepage. Center 3: You are to create a poster, pamphlet, or a book illustrating the terminology and rules you have discovered this unit. (REVIEW GUIDE)

You are to complete the following questions. Questions 1 & 2 will be done in school and question three will be done at home/school. This assignment will need to be passed in, therefore needs to be typed where possible. Make sure your work is neat and that you keep communication in mind.

1. The surface temperature of the water is 27 0 C, and the temperature of the water decreases by 3 0 C for every 25 m below the surface. A sea trout is found at a depth of 150m. At what temperature should Eleanor set the sea trout tank? 2. Lake trout can live in water from 6 0 C to 10 0 C. The average summer temperature at the surface of a small lake in Nova Scotia is 26 0 C. The temperature drops by 3 0 C for every 5m. How deep would the lake have to be for the lake trout to survive? What other factors would affect the trout’s ability to survive in the lake?

Research the temperature and depths at which three other sea creatures are found. Used mathematics to explain how you would set up an aquarium exhibit to show these creatures. Take into account water temperature, and whether these creatures can live together.