HW: Understanding Zero Wkst Math 7 Wednesday, 8/16/17 Write the IC and HW in your planner. IC: Red/Yellow Chips HW: Understanding Zero Wkst Materials Pencil Grading Pen marker & eraser p.6 HW that is due Ch. 1 math folder planner 1

The Chef’s Hot and Cold Cubes In a far-off place (next door to Never, Never Land), there was once a team of amazing chefs who cooked up the most marvelous food ever imagined. They prepared their meals over a huge cauldron, and their work was very delicate and complex. During the cooking process, they frequently had to change the temperature of the cauldron in order to bring out the flavors and cook the food to perfection.

They adjusted the temperature of the cooking either by adding special hot cubes or cold cubes to the cauldron. The cold cubes were similar to ice cubes except that they didn’t melt, and the hot cubes were similar to charcoal briquettes, except they didn’t lose their heat. If the number of cold cubes in the cauldron was the same as the number hot cubes, the temperature of the cauldron was 0 degrees on their temperature scale. For each hot cube that was put in the cauldron , the temperature went up one degree; for each hot cube removed, the temperature went down one degree. Similarly, each cold cube put in lowered the temperature one degree and each cold cube removed raised it one degree. The chefs used positive and negative numbers to keep track of their changes they were making to the temperature. For example, suppose 4 hot cubes and 10 cold cubes were dumped into the cauldron. Then the temperature would be lowered by 6 degrees althogether, since 4 of the 10 cold cubes would balance out he 4 hot cubes, leaving 6 cold cubes to lower the temperature 6 degrees.

Understanding Zero Zero Pair Date _______________________ Understanding Zero use zero pairs to represent integers in multiple ways. Objective: TSWBAT Definition: Zero Pair A pair of a “+” and a “-” that combine together to get a sum of zero

Directions: Use “+” and “-” to represent each number in 3 different ways. Justify your representation. Ex. 1: + - + - + - + - + - All three examples represent 0 because a “+” and a “-” cancels each other out and you are left with nothing.

3 + + + + + + + - + + + + - + - + - + - Ex. 2: Directions: Use “+” and “-” to represent each number in 3 different ways. Justify your representation. 3 Ex. 2: + + + + + + + - + + + + - + - + - + - All three examples represent 3 because a “+” and a “-” cancels each other out and you are left with 3 “+”.

-2 - - - - - + - - + - + - + - + - Ex. 3: Directions: Use “+” and “-” to represent each number in 3 different ways. Justify your representation. -2 Ex. 3: - - - - - + - - + - + - + - + - All three examples represent -2 because a “+” and a “-” cancels each other out and you are left with 2 “-”.

Slates Math 7 Bellwork 1) 2) Describe AND correct the error. 3) Put in order from least to greatest

6 6 6 Negative 6 doesn’t belong because the other three are the value of positive 6, not negative 6.

5 The absolute value of -5 is 5. Five is greater than 4, not less than 4. The statement should say:

6 5