Mathematics: The Language of STEM School Supplies Sandy McClellan

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1 CONTENT AND TASK DECISIONS Grade Level(s): Sixth Grade Mathematics: The Language of STEM School Supplies Sandy McClellan Description of the Task: Students are to buy required school supplies on a budget for the upcoming year. Indiana Mathematics Content Standards: 6.C.6 Apply the order of operations 6.AF.1 Evaluate expressions for specific values of their variables 6.AF.3 Define and use multiple variables when writing expressions to represent real-world problems 6.AF.6 Write an inequality to represent a real-world problem Indiana Mathematics Process Standards: PS.1 Make sense of problems and persevere PS.2 Reason abstractly and quantitatively PS.7 Look for and make use of structure PS.8 Look for and express regularity in repeated reasoning Mathematics Content Goals: Students will be able to create expressions and inequalities to show how to calculate the cost of school supplies. Language Objectives: Students will be able to explain verbally what the variables represent and create inequalities that use the variables appropriately. Materials: Required supply list Budget information and restrictions Paper Pencil calculator THE LESSON Before: o Discuss what they need to do before the first day of school, how they know what

2 they need, and how they decide what to purchase. o Students determine what a budget is and how it might affect their purchases. o Ask students: What are some things you have to do before the first day of school? o How do you know what you need the first day of school? o How do you decide what to purchase? o What is a budget? How might it affect your purchases? During: o Students are given the guidelines for purchasing school supplies. o Students use the given budget to purchase required items on the school supply list. o Students will create inequalities to show possible supply purchases. o Students will write an explanation of how the inequalities represent their budget and purchases. o Teacher provides guidelines for purchasing school supplies. o Give students their budget. o As students work on their supply list, teacher will observe students understanding of greater than, less than, greater than or equal to, and lesser than or equal to. o Teachers will give guidance and extra instruction when necessary. After: o Students compare and discuss their purchase plan with a partner. o Students share their plans with the whole class. o Have students pair up and discuss their purchase plans and inequalities with each other. o Lead a whole-class discussion. ASSESSMENT Budget sheet is completed correctly. Informal discussion shows student understanding. Observe: Making sure students are using the inequality signs correctly. Checking student understanding of how variables are used as an unknown. Ask: What is the purpose of using inequalities? What do the variables represent? What are some other real-life examples that this could be used with?

3 Back to School Supplies Even though it is the middle of January, it is never too early to begin planning for the school supplies you will need for the start of next year. Your task today is to buy your school supplies for next year from the supply list provided. Your budget is $150. You may not go over this budget and you must purchase all of the required items on the list. 1. Look the supply list and decide which supplies you want to purchase. List these and their prices below. 2. Now that you know what you want, figure out the total cost for each individual item. For example, how much would three yellow pencils cost? For each individual item, write an expression with a variable to show how you calculate the cost. 3. Solve each of the expressions above; replacing the variable with the number of items you are going to purchase. 4. What is the grand total of all you purchased? How much money did have remaining? Back to School Supplies Even though it is the middle of January, it is never too early to begin planning for the school supplies you will need for the start of next year. Your task today is to buy your school supplies for next year from the supply list provided. Your budget is $150. You may not go over this budget and you must purchase all of the required items on the list. 1. Look the supply list and decide which supplies you want to purchase. List these and their prices below.

4 2. Now that you know what you want, figure out the total cost for each individual item. For example, how much would three yellow pencils cost? For each individual item, write an expression with a variable to show how you calculate the cost. 3. Solve each of the expressions above with the items you are purchasing. 4. What is the grand total of all you purchased? How much money is left in your budget? Supply List Pencils Yellow #2 Mechanical Pens Blue Black Multicolor $0.32 each $0.41 each $0.50 each $0.53 each $0.65 each Notebooks Single subject $0.82 each Multi-subject $1.56 each Decorative $1.23 each Folders Single colored $0.43 each Decorative $0.99 each 24-pack regular 24-pack neon Colored pencils 12-pack regular 12-pack neon Loose leaf paper 100-pack $1.25 each $1.65 each $1.15 each $1.34 each $0.87 each White board Markers Black $1.03 each Colored $1.33 each Crayons

5 Name: Required Supply List Pencils- 8 Pens- 5 Notebooks- 7 Folders- 7 White boards markers- 3 Crayons- 2 packs Colored Pencils- 2 packs Loose leaf paper- 2 packs Required Supply List Pencils- 8 Pens- 5 Notebooks- 7 Folders- 7 White boards markers- 3 Crayons- 2 packs Colored Pencils- 2 packs Loose leaf paper- 2 packs