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### Course: 4th grade foundations (Eureka Math/EngageNY) > Unit 2

Lesson 1: Topic A & B: Foundations- Measuring lengths with different units
- Measuring lengths with different units
- Comparing lengths
- Comparing lengths
- Length word problems
- Length word problems
- Understanding mass (grams and kilograms)
- Estimate mass (grams and kilograms)
- Word problems with mass
- Word problems with mass

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# Comparing lengths

Measure and find difference between lengths.

## Comparing lengths by measuring

We can compare lengths by measuring each length and comparing their measures.

### First, let's measure.

Use the ruler to measure the length of each side of the triangle.