If you're seeing this message, it means we're having trouble loading external resources on our website.

If you're behind a web filter, please make sure that the domains *.kastatic.org and *.kasandbox.org are unblocked.

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

### Unit 2: Lesson 1

Topic A: Foundations

# Measuring lengths (cm, m)

Sal measures objects with a ruler.

## Want to join the conversation?

• what does dimension mean
• Dimension in math can be expressed in three dimensions. It is the way a figure is represented and measured. The first dimension is a one dimensional line, (1D) which only has length and height. The second is a two dimensional plane (2D), which has height, length, but area. An example of this would be a shape like a square. Finally, a three dimensional figure (3D) has length, height, and depth, and surface area. Think of a three dimensional figure as an object that looks like you can hold it. Examples of three dimensional objects are cubes, spheres, and much more.
• is measureing your backyard in meters unusual?
• It depends! If you live in America, Liberia, or Myanmar, you are more likely to measure it in feet or yards. However, people in other countries measure things in meters.
• 1 inch is how many centimeters?
• If you are rounding up to the nearest centimeter, then it would be 3cm. If you are wanting to know the exact amount then it is 2.54cm.
• how do you get to your mison
• What's the longest dimension of measurement?!
• how to take a brain fitness test
• why do i need to ask a question?
• bscouse we will be smart
• can i used a ruler to measure things