## Out to Lunch

### Gina DolanCitrus County Schools

#### Description

Grab your students' interest through their stomachs and provide an opportunity for them to solve a problem real to their world. With a menu from a local restaurant, students use their computation skills to plan a lunch with a cost of \$5.00 or less.

#### Objectives

The student solves real-world problems involving addition, subtraction, multiplication, and division of whole numbers, and addition and subtraction of decimals and fractions using an appropriate method (for example, mental math, pencil and paper, calculator).

#### Materials

-Copy of a menu from a local restaurant
-Out to Lunch activity sheet (includes student directions, checklist, and workspace) in associated file.
-Overhead of menu
-Overhead of the first page of the Out to Lunch activity sheet
-Pencils

#### Preparations

1. Get a copy of a menu from a local restaurant. Ask for permission to use it in your class and copy for your students.
2. Make a copy of menu for each student.
3. Make an overhead transparency of menu
4. Make a copy of the 2 page Out to Lunch activity sheet (in attached file) for each student.
5. Make an overhead transparency of first page of Out to Lunch activity sheet. (This includes the checklist for student and teacher feedback.)

#### Procedures

NOTE: This lesson practices and applies the previously learned skills of addition and subtraction of decimals (money) only.

1. Ask students: If you could go out to lunch today, what restaurant would you choose to go to? Encourage students to share their favorite restaurants then produce a menu from a kid favorite restaurant in your community.

2. Distribute a menu to each student. Put menu transparency on the overhead.

3. Check student knowledge of how to read a menu. Use the menu on overhead to help students find items you are discussing. Ask the following questions:
*What are some main dishes?
*What are some of the side dishes or side orders on the menu?
*Where can you find the prices on a menu?
*How much does a _______________ cost? (Pick an item from the menu you are using. Ask this question several times.

4. Distribute the Out to Lunch activity sheet to each student. Put the Out to Lunch activity sheet transparency on the overhead.(see Associated File)

5. Discuss directions and criteria on the checklist. Use the transparency to help students follow along with the Out to Lunch activity sheet. Cover the following:
*Define a “balanced” meal. Each meal should have a main dish and a drink. Discuss that side dishes can usually be purchased separately or as part of a meal.
*Students will plan 3 different lunches.
*Students will provide the total cost of each lunch. Lunches should not cost more than \$5.00.
Discuss the use of addition to find total cost.
*Students will give the change from \$5.00 for each lunch. Discuss the use of subtraction to find the change. Model the math for students in an example.

6. Give examples of lunches that meet/don’t meet criteria on the checklist. Use the overhead transparency of the Out to Lunch activity sheet to model how to use the workspace provided to show work in a neat and organized way.

7. Instruct students to use the checklist after they complete the work for each lunch to self check that they have included all steps and information asked for.

8. Circulate as students work to check for adherence to the criteria and mistakes in the processes of addition and subtraction.

9. Allow time for students to share with each other their favorite lunches, the lunch that comes closest to \$5.00 without going over, and the lunch that cost the least.

10. Collect students' Out to Lunch activity sheets and use the checklist above student workspace to provide feedback to students for meeting the criteria of the activity.

#### Assessments

This lesson practices and applies previously learned skills of addition and subtraction of decimals(money) only.
Students will demonstrate the appropriate method for adding and subtracting money to solve a real-world problem. The Out to Lunch activity sheet in the associated file provides a checklist for successful performance.

#### Extensions

Extend the lesson by:
-Teach a lesson on estimating with money. Then use the same menu for students to plan a lunch using mental math to compute the cost of the lunch and following the same criteria from the original activity sheet.
-Plan a field trip to the restaurant. Students are required to bring no more than \$5.00 to spend on their lunch.