Heavy and light — Physical education, 4–6 years
Objects can feel harder or easier to lift. Comparing them teaches that size and heaviness are not always the same thing.
Feeling weight
A heavy object needs more effort to lift than a light object of a similar size. A small stone may feel heavy, while a large empty box may feel light. Your hands can compare how hard different objects are to lift.
Why compare weight
People needed to know how much effort an object would take to carry, lift or load. Comparing weight helps us choose a safe bag, share objects fairly and decide whether one person can move something. It is a practical question before a number is needed.
Three objects to compare
Take a large empty cup, a small stone and a wooden block. First lift each one with one hand. The empty cup feels light, the stone feels heaviest and the block is in between. The cup is largest, so size alone did not tell you the answer.
Big does not always mean heavy
Many people guess that the biggest object must be the heaviest. That is a reasonable guess because a bigger thing can contain more material. But a large balloon is much lighter than a small bag of stones, so lift or balance objects instead of judging only by sight.
Choosing what to carry
You use this idea when packing a rucksack, carrying shopping or deciding which toy a small child can hold. Builders, pilots and delivery workers also check weight so that things can be lifted and carried safely. The comparison matters whenever effort or safety matters.
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