Sunshine Farmers Market

Common Core Standard:

CCSS.Math.Content.6.NS.B.3

Fluently add, subtract, multiply, and divide multi-digit decimals using the standard algorithm for each operation. 

Materials:

Sunshine Farmers Market Lesson

Sunshine Farmers Market Menu

Sunshine Farmers Market Teacher Questions

Sunshine Farmers Market Student Questions

Sunshine Farmers Market Key

A way to bring up the Menu and Teacher Questions on a computer and to write on it or next to it. Or, to project the Menu and Teacher Questions and write on it or next to it. 

Preparation:

Create a copy of the Sunshine Farmers Market Menu and Student Questions for each student either electronically by hard copy. 

Introduction:

Ask students some of the following questions to give background. If students have never been to a farmers market, explain what one is to them. Then give an opening statement similar to the one below.

“Where do you or your parents buy food?”

“What food do you like to buy?”

“Have you ever seen a group of people selling food outdoors?”

“Have you ever seen a farmers market?”

“What is a farmers market?”

“Today we will be looking at a menu from a fictional farmers market. This farmers market has all sorts of wonderful treats to eat and fruits and vegetables to buy. We are going to read about some customer purchases and solve problems involving addition, subtraction, multiplication, and division of decimals."

I Do:

Pull up the Sunshine Farmers Market menu and first set of Teacher Questions so students can see them. 

This is a review lesson so the students should already be comfortable adding, subtracting, multiplying, and dividing decimals to the hundreths. They should also be able to solve word problems with adding, subtracting, multiplying, and dividing whole numbers. Use the problems on the following page to review these concepts. Solve each of the four problems on your own. Tell the students each step as you complete it and why you chose to complete it that way. 

For example, here is what one could say to solve the third problem below: 

“Let’s read the question out loud. Josh wants to buy 3 scoops of chocolate ice cream that are each worth $2.68. How much money will he spend in total if he buys all 3? We can see that this is a word problem and we know that there are keywords in word problems that help us determine which operation to use. What keywords do I see in this problem?

I see the words each and in total. The word each helps us know that we are dealing with a group of things that cost the same amount of money. This word helps me know that we are using multiplication. The words in total help me know that we are combining amounts and that there will be an increase. I can draw a picture to represent what is happening in the problem. Here are 3 scoops of ice cream and I can show that they each cost $2.68. I could add up all 3 of the numbers, but I can also multiply $2.68 by 3.

First, I line up the numbers. 3 times 8 is 24. I write a 4 below and the 2 over the 6. 3 times 6 is 18. Plus 2 is 20. I write the 0 below and the 2 over the 2. 3 times 2 is 6. Plus 2 is 8. I write the 8 below. I have two numbers to the right of the decimal in my problem so my answer will have two numbers to the right of the decimal in my answer. My answer is $8.04.” 

Solve the first set of Teacher Questions. 

Add $82.56 and $1.98.

Divide $503.10 by $0.52.

Josh wants to buy 3 scoops of chocolate ice cream that are each worth $2.68. How much money will he spend in total if he buys all 3? 

Lane sees a beautiful candy apple that she would like to buy at the Sunshine Farmers Market. The candy apple costs $5.99 and Lane has a ten-dollar bill in her pocket. If she buys the candy apple with the ten-dollar bill, how much change will she get back?

We Do:

Pull up the Sunshine Farmers Market menu and second set of Teacher Questions so students can see it. 

Solve the second set of Teacher Questions with the students. Ask similar questions to the following to guide the students:

What is our first step?

What keywords do you see?

Which operation do you think we will use and why? 

What is the next step?

Solve this part on your own. What answers did you get? 

Danni’s mom would like him to pick up 13 bell peppers at the Sunshine Farmers Market. Danni looks at the prices. Would it be cheaper for Danni to buy 13 individual peppers or a dozen peppers along with an individual pepper?

Brad has $20. He would like to buy 5 pumpkins and a dozen apples. Does he have enough money to buy what he wants? If he does, how much money will he have left over? Would he also be able to buy a whole berry pie? 

You Do:

Give each student a copy of the Sunshine Farmers Market Menu and the Sunshine Farmers Market Student Questions. Have them solve each question and turn in their answers to you. Help individual students as needed.