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Lesson
- Building Pyramids
Objectives
- Students
will be able to compare different diets by using the recommendations
put forth by the Food Guide Pyramid.
- Students
will be able to evaluate their own diets using the Food Guide
Pyramid.
Materials
Needed
Other
- Cardboard,
wood or cloth blocks (optional)
Introduction
Ask students
to list the food groups in the Food Guide Pyramid and write the
food groups on the board. For each food group, ask students how
many servings they should have each day. Ask students what a serving
size is equal to for each group. (Grain Group 6-11 servings a day,
one serving = 1 slice of bread, 1/2 cup of cooked cereal, rice or
pasta or one ounce of cold cereal; Vegetable Group 3-5 servings
a day, one serving = 1 cup of raw, leafy vegetables, 1/2 cup cooked
vegetables, or 3/4 cup of vegetable juice; Fruit Group 2-4 servings
per day, one serving = one medium-sized fresh fruit, 1/2 cup canned
fruit and 3/4 cup fruit juice; Meat Group 2-3 servings per day,
one serving = 2-3 ounces of cooked lean meat, poultry or fish, 1/2
cup of cooked dried beans, 1 egg or 2 tablespoons of peanut butter;
Milk Group 3 servings per day, one serving = 1 cup of milk or yogurt,
1-1/2 ounces of natural cheese or 2 ounces of processed cheese;
and the other group which includes fats and sweets and should be
used sparingly. Have students name a variety of foods in each group.
Discuss with
students that each food group is important because foods in each
group are high in particular nutrients (for example foods in the
dairy group are high in calcium, vitamin D and riboflavin - see
introduction and background material from lessons 1- 4 for more
information on the nutrients in each group). Foods at the base of
the pyramid should be eaten in larger amounts than foods toward
the top of the Pyramid.
Discuss with
students that sometimes it is difficult to determine which of the
food groups a food belongs to. For example, potatoes are in the
vegetable group. Potato chips, however, are in the other group at
the tip of the Pyramid, because they have a lot of fat added to
them when they are cooked. Low fat baked potato chips may still
be in the Tip because they are high in sodium.
French fries
are also a questionable food. Deep fried french fries that you get
in fast food restaurants have a lot of fat. These fries are like
sponges, and they soak up oil like a sponge soaks up water. Frozen
french fries that you buy in the grocery store are coated in some
fat. If you bake these at home, they can be counted in the Vegetable
Group, because they are not too fatty.
Cakes and cookies
are made from grains, like wheat flour. However, they have a lot
of sugar and fat added to them and, therefore, are at the tip of
the Pyramid in the Other or Fat and Sugar Group. Soda gets all of
its calories from sugar and is also in the tip of the Pyramid. Ice
cream is made from milk but it has a lot of fat and sugar added,
so it is included in the tip also.
Activities
Mr. Couch
Potato and Mr. Fit
Have students look at the menus for Mr. Couch Potato and Mr. Fit.
Ask students to fill out the Pyramid Food Group Chart, assigning
each food to a food group. They should write the name of the food
in one box if the diet included one serving of the food, and in
two boxes if the diet included two servings of the food. For example,
a half of a hamburger bun is one serving from the grain group because
it is one slice of bread. So they would have hamburger bun written
in two boxes under the Grain Group for Mr. Couch Potatos diet.
Now have students
try to build the Pyramids represented by the diets using blocks
or draw them on the black board drawing equal sized boxes for each
serving from each food group. Explain to students that Mr.
Couch Potatos diet is making him feel sluggish and down, whereas
Mr. Fits diet is giving him energy to stay active, play and
participate in sports.
Building
My Pyramid
Have students fill out the worksheet, Foods I Ate Yesterday. They
should circle all the foods and drinks they had yesterday. If they
had something to eat or drink that is not on the list of foods in
each group, they can write it in under "other" at the
bottom of each list for each food group. The lists are to help students
remember foods they ate. Each circle represents one serving of that
food. If they ate 2 or 3 servings they should circle it two or three
times. On the back of the worksheet, students should draw the Pyramid
represented by their diet.
Conclusions
- Students
need to consider the fat, sugar and sodium content of foods, as
well as their main ingredient, before assigning a food to a food
group or the tip of the Food Pyramid.
- Some high
fat and high sugar foods may be acceptable for students, if they
have enough servings from the first two levels of the Pyramids
to support them.
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