Measurement helps us find out how long, how heavy, or how full something is. In Class 1, we compare using everyday words and non-standard units.
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Key Concepts
Length: How long or tall something is. We compare using words like longer, shorter, taller, same length.
- Non-standard measurement: We can measure length using hands, feet, paper clips, or pencils as units.
- "The table is 5 handspans long."
Weight (Heavy and Light): Some objects are heavier and some are lighter. We compare them by lifting or using a simple balance.
- Capacity (Full and Empty): How much a container can hold. A bigger container can hold more; a smaller one holds less.
- Full, half-full, and empty are used to describe how much is in a container.
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Lina is taller than her little brother. Her brother is shorter than Lina.
A pencil is measured as 4 paper clips long. A crayon is 2 paper clips long. The pencil is longer than the crayon.
A bag of rice is heavier than a bag of feathers. We can feel this when we lift them.
A bucket can hold more water than a cup. The bucket has a greater capacity.
Measure the length of a book using your handspan. If it takes 3 handspans, the book is 3 handspans long.
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Common mistakes
- When comparing length, always place objects on the same flat surface at the same starting point.
- "Heavier" does not always mean bigger. A small stone can be heavier than a large balloon.
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Summary
Measurement is about comparing length (longer/shorter), weight (heavier/lighter), and capacity (more/less). We use non-standard units and everyday language to describe and compare measurements.