Early Measurement – Comparing Without Numbers
Long before learning standard units like centimetres or kilograms, children first learn to compare things directly: which pencil is longer, which bag is heavier, which cup holds more water. Measurement education calls this early stage non-standard measurement – comparing two things side by side, or using an everyday object (like paperclips or building blocks) as an informal unit, rather than a ruler or scale.
This is not just a simplified version of “real” measurement – it mirrors the actual history of the subject. Before standardised units existed anywhere in the world, ancient measurement was built entirely from body-based comparisons: a cubit was the length of a forearm, a foot was, quite literally, a foot, and a span was a stretched hand. The whole history of measurement begins with exactly this kind of direct comparison – just like a child's very first steps into the subject today.
Longer or Shorter
Two lengths can be compared directly, or measured using a simple repeated unit like paperclips laid end to end.
9 paperclips is more than 6, so Pencil A is longer.
Heavier or Lighter
7 blocks is more than 4, so Box A is heavier.
Real-Life Application
- Packing a bag: checking which items are too heavy.
- Growing taller: standing back to back to see who is taller.
- Filling containers: comparing which cup holds more juice.
Key Takeaways
- Non-standard measurement compares things directly, or uses an everyday object as an informal unit.
- Ancient measurement systems (cubits, feet, spans) began the exact same way, using the human body.
- This stage prepares learners for standard units like centimetres and kilograms, covered next in this section.
Practice: Early Measurement
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