Weight : Comparing of Weight of two different objects based on their Capacity Measurement Mathematics Primary 2 Third Term Lesson Notes Week 6

Lesson Plan

Behavioural Objectives:

By the end of the lesson, pupils should be able to:

1. Understand the concept of weight.
2. Identify tools used to measure weight.
3. Compare the weight of two different objects.
4. Use a scale to measure the weight of objects.
5. Solve problems involving comparing the weight of objects.

• Weight
• Heavier
• Lighter
• Scale

Entry Behaviour:

Pupils are familiar with measuring the length of objects using a ruler.

Learning Resources and Materials:

• Scales (bathroom scale, kitchen scale)
• Various objects of different weights (e.g., fruits, toys, school supplies)
• Chart paper
• Marker

Building Background/Connection to Prior Knowledge:

Review the previous lesson on measuring length. Ask pupils about how long different objects are.

Embedded Core Skills:

• Measurement skills
• Problem-solving
• Critical thinking

Reference Books:

• Lagos State Scheme of Work
• Primary 2 Mathematics Textbook

Instructional Materials:

• Scales
• Various objects for measuring weight (e.g., books, toys, fruits, etc.)
• Chart paper
• Marker

Content:

• Introduction to weight and tools used to measure it.
• Comparing the weight of two different objects.
• Using a scale to measure the weight of objects.
• Solving problems involving comparing the weight of objects.

Weight

Weight measures how heavy an object is. It tells us how much something weighs.

Tools for measuring weight:

• Scale: Measures how heavy things are.
• Measuring weight: Helps us know the weight of objects.
• Bathroom scale: Used to measure the weight of people and animals.

Examples:

• 🍏 Apple and 🍊 Orange
• The apple weighs less than the orange.
• 🧸 Teddy bear and 🪀 Yo-yo
• The teddy bear weighs more than the yo-yo.
• 🐱 Cat and 🐶 Dog
• The cat weighs less than the dog.
• 📚 Books
• A thick book weighs more than a thin book.
• 🛒 Bag of groceries
• A full bag weighs more than an empty bag.

Comparing weights:

• When comparing two objects, we can say:
• Heavier: One object weighs more.
• Lighter: One object weighs less.

Examples:

• 🏈 Ball and ⚽ Ball
• The football is heavier than the soccer ball.
• 🛢️ Barrel and 🛍️ Bag
• The barrel is heavier than the bag.

Remember, weight helps us understand how heavy or light things are!

Class Activity Discussion on worked examples on comparing the weight of two different objects based on their capacity measurement:

1. Example 1:
• Given: An apple and an orange.
• Compare: The apple and the orange on a scale.
• Answer: The orange is heavier than the apple.
2. Example 2:
• Given: A small rock and a big rock.
• Compare: Put the rocks on a scale.
• Answer: The big rock is heavier than the small rock.
3. Example 3:
• Given: A filled water bottle and an empty water bottle.
• Compare: Weigh the bottles on a scale.
• Answer: The filled water bottle is heavier than the empty one.
4. Example 4:
• Compare: Weigh the bread on a scale.
5. Example 5:
• Given: A teddy bear and a stuffed rabbit.
• Compare: Weigh the toys on a scale.
• Answer: The teddy bear is heavier than the stuffed rabbit.
6. Example 6:
• Given: A box of blocks and a single block.
• Compare: Weigh the objects on a scale.
• Answer: The box of blocks is heavier than the single block.
7. Example 7:
• Given: A full backpack and an empty backpack.
• Compare: Weigh the backpacks on a scale.
• Answer: The full backpack is heavier than the empty backpack.
8. Example 8:
• Given: A book and a notebook.
• Compare: Weigh the book and the notebook on a scale.
• Answer: The book is heavier than the notebook.
9. Example 9:
• Given: A tin of soup and a packet of soup.
• Compare: Weigh the soup containers on a scale.
• Answer: The tin of soup is heavier than the packet of soup.
10. Example 10:
• Given: A pumpkin and a tomato.
• Compare: Weigh the vegetables on a scale.
• Answer: The pumpkin is heavier than the tomato.
11. Example 11:
• Given: A can of soda and a can of juice.
• Compare: Weigh the cans on a scale.
• Answer: Both cans might weigh the same, but you can check to confirm.
12. Example 12:
• Given: A bag of rice and a bag of beans.
• Compare: Weigh the bags on a scale.
• Answer: The bag of rice might be heavier, but you can check on a scale.
13. Example 13:
• Given: A dog and a cat.
• Compare: Weigh the animals on a scale.
• Answer: The dog is heavier than the cat.
14. Example 14:
• Given: A pack of paper and a sheet of paper.
• Compare: Weigh the paper on a scale.
• Answer: The pack of paper is heavier than the single sheet of paper.
15. Example 15:
• Given: A bottle of milk and a cup of milk.
• Compare: Weigh the milk on a scale.
• Answer: The bottle of milk is heavier than the cup of milk

More explanation about comparing the weight of two different objects based on their capacity measurement:

1. Q: What is weight?
• A: Weight is how heavy something is.
2. Q: What tools do we use to measure weight?
• A: We use scales, bathroom scales, and other measuring tools.
3. Q: How do you compare the weight of two objects?
• A: Use a scale to see which object is heavier or lighter.
4. Q: What does it mean if an object is heavier?
• A: It weighs more than another object.
5. Q: What does it mean if an object is lighter?
• A: It weighs less than another object.
6. Q: Which is heavier, a full water bottle or an empty water bottle?
• A: A full water bottle is heavier.
7. Q: How can we tell the weight of an animal?
• A: Use a bathroom scale or special scale for animals.
8. Q: Which weighs more, a loaf of bread or a slice of bread?
• A: A loaf of bread weighs more.
9. Q: What is the difference between heavier and lighter?
• A: Heavier objects weigh more; lighter objects weigh less.
10. Q: Which weighs more, a toy car or a real car?
• A: A real car weighs more.
1. Q: How do you measure the weight of a person?
• A: Use a bathroom scale.
1. Q: Which is lighter, a cat or a dog?
• A: A cat is usually lighter than a dog.
1. Q: What do you use to weigh small objects like fruit?
• A: Use a kitchen scale or small scale.
1. Q: Which weighs more, a bag of rice or a bag of beans?
• A: It depends on the size of the bags. Compare them on a scale.
1. Q: What is one way to measure the weight of a big object?
• A: Use a large scale or weighing machine.

Evaluation

1. The tool used to measure weight is a ______.
• a. Pencil
• b. Scale
• c. Eraser
• d. Crayon
2. An object that weighs more is called ______.
• a. Heavier
• b. Lighter
• c. Thinner
• d. Smaller
3. A full water bottle is ______ than an empty one.
• a. Heavier
• b. Lighter
• c. Bigger
• d. Smaller
4. To compare the weight of two objects, we use a ______.
• a. Scale
• b. Ruler
• c. Calculator
• d. Clock
5. The bathroom scale measures the weight of ______.
• a. Apples
• b. Books
• c. People
• d. Balls
6. A loaf of bread is ______ than a slice of bread.
• a. Lighter
• b. Heavier
• c. Taller
• d. Thicker
7. When an object is lighter, it weighs ______ than another object.
• a. The same
• b. Less
• c. More
• d. Not at all
8. To measure how heavy an animal is, use a ______.
• a. Cup
• b. Ruler
• c. Scale
• d. Thermometer
9. A big rock is ______ than a small rock.
• a. Heavier
• b. Lighter
• c. Smaller
• d. Softer
10. A small box of toys is ______ than a large box of toys.
• a. Lighter
• b. Heavier
• c. Taller
• d. Shorter
11. The weight of a puppy is ______ than the weight of an adult dog.
• a. Lighter
• b. Heavier
• c. Same
• d. Much more
12. A measuring tape is used to measure ______.
• a. Time
• b. Temperature
• c. Length
• d. Weight
13. When you use a scale, you can find out ______.
• a. How tall an object is
• b. How heavy an object is
• c. The color of an object
• d. The temperature
14. Which is heavier: a bag of rice or a bag of feathers?
• a. Bag of rice
• b. Bag of feathers
• c. Both are the same
• d. Cannot be determined
15. To measure a person’s weight, you use a ______.
• a. Clock
• b. Thermometer
• c. Bathroom scale
• d. Measuring tape

Presentation

Step 1:

The teacher revises the previous topic which was:

Step 2:

The teacher introduces the new topic:

• Define weight and explain that it is how heavy an object is.
• Introduce tools for measuring weight: scale and bathroom scale.
• Show different scales to the pupils.

Step 3:

The teacher allows the pupils to give their own contributions and the teacher corrects the pupils when and where necessary:

• Ask pupils to compare the weight of different objects using a scale.
• Encourage pupils to describe which objects are heavier or lighter.
• Correct pupils and guide them as they weigh objects.

Teacher’s Activities:

• Demonstrate how to use a scale to weigh different objects.
• Help pupils compare the weight of two different objects.
• Guide pupils in identifying which object is heavier or lighter.

Learners’ Activities:

• Practice using a scale to weigh objects.
• Compare the weight of different objects and identify which is heavier or lighter.
• Share their observations with the class.

Assessment:

• Observe pupils while they use the scale and compare weights.
• Ask pupils to solve problems involving comparing the weight of objects.
• Give feedback and correct mistakes.

Evaluation Questions:

1. What is weight?
2. What tools can you use to measure weight?
3. Which is heavier: a full bag of rice or an empty bag?
4. How would you measure a person’s weight?
5. If you have an apple and an orange, which is likely heavier?
6. What is one way to compare the weight of two objects?
7. Which is lighter: a loaf of bread or a slice of bread?
8. What does a scale tell you about an object?
9. Can you weigh an animal on a bathroom scale?
10. If you have a box of blocks and a single block, which is heavier?

Conclusion:

• The teacher goes around the classroom to mark pupils’ work.
• Provide corrections and feedback.
• Praise pupils for good work.
• Encourage pupils to practice using scales to weigh different objects at home.
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