In your kitchen or in a supermarket, look at the information on labels on unopened packages and discover how heavy the items are. Some small items may be labelled in grams and other items will be labelled in kilograms.
The photos show a hen’s egg, a pen, a newborn baby and a glass of water.
How heavy do you think these things are?
Arrange them in order from the lightest to the heaviest?
Here are their masses in grams:
44o grams, 6 grams, 60 grams, and 4000 grams or 4 kilograms.
Can you match the correct mass to each one?
Now find some other objects, weigh them if you have scales and compare their masses with these four things. When you buy food items in shops the masses are usually given.
How heavy are you? How much has your mass increased since you were a small baby?
Click here to download the HOW HEAVY? worksheet.