Maryland Math 6.AT.A.1
The Standard
Use ratio language in context (e.g., “__ to __,” “for every,” “per”) to describe a ratio relationship between two quantities, including part to part and part to whole (e.g., "The ratio of wings to beaks in the bird house at the zoo was 2:1, because for every 2 wings there was 1 beak." )
Maryland College and Career Ready Standards for Mathematics (2025) · UNDERSTANDING RATIO CONCEPTS AND USE RATIO REASONING TO SOLVE.
Teacher's field guide
What This Standard Means
What Students Need to Do
- Students describe how two groups compare in a situation. They also compare one group with the total, naming both amounts clearly.
What Mastery Looks Like
- Given 4 red counters and 6 blue counters, a student says there are 4 red for every 6 blue. They also say there are 4 red for every 10 counters in all.
Common Misconceptions
- Students may reverse the order, describing blue to red when asked for red to blue. They may use the blue count as the total instead of adding both groups.
How to Assess It
- Exit ticket: A bag has 3 green tiles and 5 yellow tiles. Write one sentence comparing green to yellow and another comparing green to all tiles.
Lesson moves
Ways to Teach It
Give pairs 4 red cubes and 6 blue cubes; have them build two trains and describe red to blue and red to all cubes.
Ask partners why a picture of 3 cats and 2 dogs gives different cats-to-dogs and cats-to-all-pets comparisons.
Play ratio bingo: call out a comparison such as 2 pencils for every 3 pens, and have students cover the matching picture card.
Tally apple and orange orders at lunch, then describe apple orders to orange orders and apple orders to all fruit orders.
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Printable 6.AT.A.1 Worksheet
A ready-to-print activity worksheet aligned to 6.AT.A.1, with an answer key for the teacher on its own page. No account needed.
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Related Standards
- 6.AT.A.3
Use ratio and rate reasoning to solve problems in context by reasoning about tables of equivalent ratios, tape diagrams, double number lines, or the Coordinate ...
- 6.AT.A.2.a
Use unit rate language in the context of a ratio relationship (e.g., “The recipe has a ratio of 3 cups of flour to 4 cups of sugar so there is 3/4 cup of flour ...
- 6.AT.A.4
Find a percent of a quantity in context as a rate per 100 (e.g., 30% of a quantity means 30/100 times the quantity), including finding the whole given a part an...
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