About this video
Sal measures how wide a flower is with a ruler. He draws lines at the left and right sides of the flower, lines up the left edge of the ruler with the left line, and counts the inches to the right line. The flower is about three inches wide.
You'll be able to
- mark where an object starts and ends before measuring it.
- line up the start of a ruler with one edge of an object.
- read a length in inches from a ruler.
Key words
- ruler
- A straight tool with marks used to measure length.
- inch
- A unit of length marked on many rulers.
- wide
- How far something goes from its left side to its right side.
Transcript
- [Instructor] So right over here, I have a flower and I have a ruler and what I wanna do is figure out how wide this flower is. So you can pause the video and think about how I would do that. All right, now let's do this together. So if I wanna figure out how wide the flower is, first I could say, all right, the left side of the flower goes about this far.
So let me draw a line here just so we can really keep track of how far we go to the left and then the right side of the flower goes about that far. So let's keep track of that and then we can use our ruler to measure the distance between those two lines. We can rotate it a little bit then I'm going to move it a little bit and I want the left edge of the ruler to start at that left line.
So starting right over here and then we could see that it's one, two, three inches roughly to get us to the right side. So it looks like this flower right over here is three inches wide.
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