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## 3rd grade foundations (Eureka Math/EngageNY)

### Unit 2: Lesson 2

Topic B: Foundations# 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.

### Now, let's compare.

## Want to join the conversation?

- can you compare a different way??(32 votes)
- compare buy subtration or divison the difference is how much greater(3 votes)

- Is there anyway we could get a lesson like this but with a protractor?(2 votes)
- You could, I guess, but I don't recommend it. If you were to use a protractor instead of a ruler, you would need to measure the angles and then use one of three trigonometric ratios (well, six if you count the reciprocal trig ratios) to find the lengths of the sides. I'm gonna assume you're not in grade 10, so I don't recommend this method. I've tried it, and I much prefer a ruler, thank you very much.(8 votes)

- it doesn't matter how hard you try just take your time(6 votes)
- THis is so interesting i love this length measurement(5 votes)
- Quien tu ere dime socio quien tu eres(4 votes)
- is it a way to get a better aanswr(4 votes)
- how long is side a and side b and side c is a b or c longer or shorter(1 vote)
- Side A is 6 cm.

Side B is 8 cm.

Side C is 10 cm.

(You can adjust the ruler to measure the sides)(3 votes)

- This is math for a kindergarten student? Really?(3 votes)
- for
**some people**its hard and for**some people**its easy(2 votes)

- how are you going to measure the first qustion(3 votes)
- Just use the ruler(1 vote)