Food Preservation

Lesson Plan: Food Preservation & Harmful Substances 

Grade 2

Objective:
By the end of the lesson, students will be able to:
Understand why we need to preserve food.
Identify harmful substances in food that can make us sick.
Learn how to eat safe and healthy food.
 

Materials Needed:
Pictures of preserved foods (fruits, vegetables, milk, jam)
Pictures of spoiled food
Chart paper / whiteboard
Colored pencils or crayons

Lesson Outline:
1. Introduction 
Ask: “Have you ever seen food go bad at home?”
Explain:
“Food can get spoiled if we don’t store it properly. We use food preservation to keep it safe and healthy.”
 

2. Food Preservation 
Explain simply:
What is food preservation?
“Food preservation means keeping food fresh so it lasts longer and doesn’t make us sick.”
Examples of preservation:
Refrigeration – Keep milk, fruits, and vegetables in the fridge.
Freezing – Freeze ice cream or meat.
Canning/Jars – Store jams or pickles.
Drying – Make dried fruits or chips.
Activity: Show pictures of fresh vs spoiled food and discuss which is safe to eat.
 

3. Harmful Substances 
Explain in simple words:
“Some foods have harmful substances that can make us sick.”
Examples:
Too much sugar or salt – Can harm teeth and body.
Spoiled or rotten food – Can cause stomach pain.
Chemicals in junk food – Some candies, chips, or fizzy drinks have chemicals that are bad for health.
Tip: “Always eat clean, fresh, and healthy food.”
 

Activity 
Give students flashcards of foods.
Ask them to classify them into safe/unsafe food.
Example: Fresh apple → safe; old leftover sandwich → unsafe.
 

Conclusion 
Recap: “Preserving food keeps it fresh and safe. Eating safe food keeps our body healthy and strong.”

Question 
Q1. What is food preservation?
A. Keeping food fresh so it lasts longer and is safe to eat.
Q2. Name one way to preserve food.
A. Refrigeration, freezing, drying, or canning.
Q3. What can happen if we eat spoiled food?
A. We can get stomach pain or sickness.
Q4. Name one harmful substance in food.
A. Too much sugar, salt, or chemicals in junk food.
Q5. Why is it important to eat safe food?
A. To stay healthy, strong, and avoid sickness.