We measure things to compare, build, cook, and understand our world. New Zealand uses the metric system which makes conversions easy β everything is based on 10!
π What We Measure
π
Length
How long or tall
mm, cm, m, km
βοΈ
Mass (Weight)
How heavy
g, kg, t
π₯
Volume/Capacity
How much space/liquid
mL, L
π‘οΈ
Temperature
How hot or cold
Β°C
π Conversions
- 10 mm = 1 cm
- 100 cm = 1 m
- 1000 m = 1 km
- 1000 g = 1 kg
- 1000 kg = 1 tonne
- 1000 mL = 1 L
π‘ Helpful Tips
- Bigger β Smaller: Multiply (Γ)
- Smaller β Bigger: Divide (Γ·)
- Example: 5 km = 5 Γ 1000 = 5000 m
- Example: 250 mL = 250 Γ· 1000 = 0.25 L
- Your finger width β 1 cm
- A door is about 2 m tall
- A banana weighs about 150 g
- A bottle of water is often 600 mL
βοΈ Activities
- 3 m = ___ cm
- 2500 g = ___ kg
- 4.5 km = ___ m
- 750 mL = ___ L
What unit would you use to measure...?
- Height of a building: ___
- Weight of a cat: ___
- A drink bottle: ___
π©βπ« Teacher Notes
- Mathematics: Measurement