lesson
Measure from zero
Read with an adult. You can say, point, draw or write your answer.
1 · Learn
A ruler measures length in equal units. Put one end of the object at the zero mark, not necessarily at the ruler's edge.
Centimetres are useful for short objects. Metres are useful for longer distances. One metre is 100 centimetres. Estimate first, then measure to check.
2 · Worked example
A line starts at 0 cm and ends at 7 cm. Its length is 7 cm.
3 · Your turn
A ribbon is 12 cm long. Another is 9 cm. How much longer is the first?
Check your answer
3 cm longer: 12 − 9 = 3.
4 · Apply your learning
Estimate and measure two safe objects to the nearest centimetre. Record the unit with each number.
Adult guidance and safety
Use practical objects before symbols. Read the task aloud when needed and ask the child to explain, not just name an answer. Revisit with different examples; one successful answer is not proof of fluency.
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