Try holding the following things in both hands. Make observations in pairs. Which is heavier and which is lighter?
| Things to compare | My observation | My friend’s observation |
|---|---|---|
| Lunch box and Pencil box | ..... is heavier than ..... | ..... is heavier than ..... |
| Your school bag and Lunch bag | ||
| Apple and watermelon | ||
| A balloon filled with air and a basketball |
Observations:
(1) Lunch box is heavier than Pencil box because a lunch box contains food and has more weight.
(2) School bag is heavier than Lunch bag because a school bag contains books which are heavy.
(3) Watermelon is heavier than Apple because a watermelon is much larger and contains more water and flesh.
(4) A basketball is heavier than a balloon filled with air because a basketball has more material and air pressure, while a balloon filled with air is very light.
Explanation
The chapter introduces the concept of weight through hands-on activities. Children learn to compare weights by holding objects in both hands. Heavier objects push down more due to their weight, making the hand go lower.
Solution Steps
Hold one object in each hand to compare weights.
Observe which hand feels heavier or goes lower.
The heavier object pushes down more due to its weight.
Identify which object is heavier and which is lighter in each pair.