Adding and Subtracting Integers Unit Grade 7 Math 5 Days Tools ...

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$By: Melissa Hanel Math B/Grade 11 5 Day Unit Plan Technologies ...$

Unit OverviewDay 1-Students will use the Four-Pan Algebra Balance to compare integers in groupsof four students.Day 2-Students will use the four-Pan Algebra Balance to add integers, in groups offour. Students will begin to look at patterns to find rules for adding integersDay 3- Students will use algebra tiles to add integers. They will begin to discover therules for adding integers.Day 4-Students will use algebra tiles to subtract integers. They will discover the rulesfor subtracting integers. They will make posters of the rules for adding andsubtracting integers and share them with the class.Day 5-Students will play addition math war to practice the rules they discovered foradding and subtracting integers.6
Lesson: Day One-Comparing integersTime: 45 minutesObjectives:• The students will be able to compare integers.Materials:• Four-Pan Algebra Balance• Index cards with , and = written on them• Chips for the Four-Pan Algebra BalanceActivities:1. On the board will be the following problem of the Day, for the students tocomplete as they sit down.• Using < , > , or = to compare the following numbers• 10 2• 3 6• 0 4• 5 4• 6 9• We will then go over the problems reviewing < , > , and =.2. I will model to the class how to use the Four-Pan Algebra Balance tocompare integers.• I will write 3 = 3 on the chalkboard. Then I will place 3 chips inthe yellow pan the left side then 3 chips in the yellow pan the rightside. I will ask the class how the balance shows us that 3 reallyequals 3. Then I will hold up the equal index card.• Next I will write -4 = -4 on the chalkboard. I will place 4 chips ineach red pan the balance and I will hold up the equal card again. Iwill ask the class what the different colored cups represent.• Then I will write 2 < 4 on the chalkboard and place thecorresponding chips in the pans. We will note that the balance ispointing towards the smaller number.• Have each group of students use the Four-Pan Algebra Balance tomake a model of the following equations, while noticing whichway the pointer is pointing:• 7 > 3• 4 < 8• 1 < 7• Write -3 < 4 on the board, have the students guess which way thepointer is pointing. Then have them try it, in their groups, to see ifthey were correct.7
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Adding and Subtracting Integers Unit Grade 7 Math 5 Days Tools ...

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