🔬 ScienceGrade 2Lesson 28
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Balanced Diet and Food Groups

Lesson preview: the Mini Lesson and Vocabulary are open to everyone. Guided practice, exercises, the parent checklist and the printable PDF worksheet come with full access (free 7-day trial or membership).

Learning Objectives

  • 1Name the three food groups
  • 2Give examples from each
  • 3Explain what each food group provides for the body
  • 4Describe what a balanced plate looks like
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Mini Lesson

Your body runs on food the same way a car runs on fuel. But unlike a car, your body needs many different kinds of fuel — for energy, for building and repairing tissues, and for keeping bones and teeth strong. Eating a balanced diet means eating the right amounts from all the food groups every day.

Group 1 — Grains and Vegetables (eat the most)

  • Grains: bread, rice, pasta, oats, corn. These are rich in carbohydrates — the body's main source of energy. Whole grains also provide fiber, which helps digestion.
  • Vegetables and fruit: carrots, spinach, apples, oranges, broccoli. These provide vitamins and minerals that keep organs working well and the immune system strong.
  • This group should make up the largest part of every meal.

Group 2 — Protein (eat a moderate amount)

  • Animal protein: chicken, fish, eggs, beef. Plant protein: beans, lentils, nuts, tofu.
  • Protein provides the building blocks (amino acids) your body needs to grow, repair muscles, and make enzymes and antibodies.
  • Children need plenty of protein because their bodies are growing quickly.

Group 3 — Dairy and Treats (dairy daily; treats in small amounts)

  • Dairy: milk, cheese, yogurt. These are rich in calcium, which builds and strengthens bones and teeth.
  • Treats: candy, cake, chips, soda. These are high in sugar and fat with few vitamins. They can be enjoyed occasionally but should not replace other food groups.

What a balanced meal looks like

  • Half the plate: grains and vegetables.
  • One quarter: protein.
  • One quarter: dairy or a small treat.
  • Drink water with every meal — not sugary drinks.
A balanced meal plate divided into three food groupsA circular plate divided into sections: half for grains and vegetables, one quarter for protein, and one quarter for dairy. A glass of water sits next to the plate.A Balanced PlateGrains &Vegetables(1/2 plate)Protein(1/4 plate)Dairy(1/4 plate)waterGrains & vegProteinDairy & treats
A balanced plate: half grains and vegetables, one quarter protein, one quarter dairy — with water to drink.
Three food groups and what each one provides the bodyThree labeled cards showing each food group and its benefit: Grains and Veg provide energy and vitamins; Protein provides growth and repair; Dairy provides calcium for bones and teeth.What Each Group ProvidesGrains &VegetablesEnergyVitaminsFiberbread, rice,pasta, apple,carrot, cornProteinGrowthRepairAntibodieschicken, fish,eggs, beans,nuts, tofuDairy &TreatsCalciumBonestreats: smallmilk, cheese,yogurt, candy,cake
Each food group card shows what it provides: grains and vegetables give energy and vitamins; protein supports growth and repair; dairy builds bones with calcium — treats should be only a small amount.
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Ask yourself: "Can I name the three food groups and tell what each one does for my body?"

Vocabulary
Balanced diet
Eating the right amounts from all food groups every day so the body gets what it needse.g. grains, protein, and dairy each day
Carbohydrate
A nutrient in grains, rice, pasta, and bread that gives the body energye.g. bread, rice, oats, pasta
Protein
A nutrient that builds and repairs muscles and tissuese.g. chicken, fish, beans, eggs
Calcium
A mineral in dairy foods that builds strong bones and teethe.g. milk, cheese, yogurt
Vitamin
A nutrient in fruits and vegetables that keeps organs and the immune system healthye.g. vitamin C in oranges
Fiber
A part of whole grains, fruits, and vegetables that helps digestione.g. whole grain bread, apples, carrots
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