Surf For More Math

Chapter 9: Multiplying Multi-Digit Numbers

You Are What You Eat

INTRODUCTION

To grow, and to be healthy and strong, it is important to eat a balanced diet. But what food should you eat and how much? Let's find out.

THE TASK

You will explore Canada's Food Guide to Healthy Eating to learn about the four food groups and how many servings of each food group you should eat in a day. You will then calculate how much of each food group you should eat in a week and in a month. You will also complete a one-day food diary to find out if you are a healthy eater. You will then write a paragraph that summarizes your findings.

THE PROCESS

Go to Canada's Food Guide to Healthy Eating . Read about healthy eating. Find out about how many servings of each food group you should eat each day. Also pay attention to how much food equals a ‘serving’. For each food group there is a range given for number of servings per day. Use the lowest number of servings in the range to fill out the Food Guide Exercise Sheet. Then, use your knowledge of multiplying to calculate the number of servings required in a week and in a month. Use your answers to complete the Food Guide Exercise Sheet .
Print the One-Day Food Diary . Think about what you ate yesterday. Write down what you ate for breakfast, lunch, dinner and snacks and then determine how many servings of each food group were in each meal. You can go back to Canada's Food Guide to Healthy Eating to determine how much food equals a ‘serving’ in each food group.
Estimate, using multiplication, the number of servings of each food group you eat in a week, and in a month.
Write a paragraph explaining what you found out about your eating habits. Compare your diet to Canada’s Food Guide to Healthy Eating. Use specific numbers and math words in your comparison.

RESOURCES

Websites:

Canada's Food Guide to Healthy Eating

Files:

Food Guide Exercise Sheet

One-Day Food Diary

Materials:

Paper and pen/pencil

ASSESSMENT

	Level 1	Level 2	Level 3	Level 4
Application of Procedures (multiplication)	I made major errors and/or omissions when I multiplied.	I made several errors and/or omissions when I multiplied.	I made only one or two minor errors and/or omissions when I multiplied.	I made no errors when I multiplied.
Communication (paragraph about food habits)	My comparison is unclear, incomplete or inaccurate. I used very few math words and numbers.	My comparison is complete, somewhat clear, and fairly accurate. I used some simple math words and numbers.	My comparison is complete, clear and accurate. I used appropriate math words and numbers.	My comparison is thorough, clear, and insightful. I used a range of math words and numbers to make a variety of comparisons.