These images are not shown to the same scale. An elephant is much bigger and heavier than a cat or a car. Can you arrange these things in order from lightest to heaviest? Can you estimate the mass of each of these things?
How many oranges do you think you would need to balance an elephant in the scales?
Now try matching the list of objects below to their masses.
A1 Car A2 10 year old girl A3 Orange A4 Cat A5 Elephant
A6 Truck A7 One year old baby A8 Paperback book A9 Man A10 Phone
M1 200 g M2 6000 kg M3 260 g M4 4500 g M5 70 kg
M6 115 g M7 1,400 kg M8 9 kg M9 30 kg M10 2700 kg