UNIT RATE
UNIT RATE
Embedded Files
What does it mean?
What does it mean?
A unit rate tells us how much one quantity changes when another related quantity changes by one unit.
Why is Unit Rate in the Proportionality & Ratio Reasoning family of seeds?
Why is Unit Rate in the Proportionality & Ratio Reasoning family of seeds?
Unit rates quantify the relationship, or covariation, between two quantities or variables.
How does this connect to Algebra?
How does this connect to Algebra?
The unit rate between two variables tells us the slope of the linear relationship between those two variables.
What might children say?
What might children say?
"When this [goes up/changes] by 1, that [goes up/changes/goes down] by ____!"
More generally, children may point out a general rule or pattern that whenever one quantity changes by 1, the other changes by a set amount. They may also seek out this unit rate by starting with a given ratio (for example, 2 to 3) and dividing down.
What might children do?
What might children do?
Children may trace out a slope ("up-and-over") with their hands or draw a sketch that shows what happens over multiple minutes (or another unit).
Here, a child reduces to a unit rate and uses that to show a pattern over time.
unitrate_John_MM_1.mp4Used in tasks in which something is changing over time at a constant rate.
Children might reduce a ratio to its simplest form.
Page updated
Report abuse