Students are introduced to the concept of ratios, learning ratio language to describe the association between two or more quantities and different strategies to solve ratio problems.
Math
Unit 1
6th Grade
In Unit 1, 6th grade students have the opportunity to study a concept that is brand new to them: ratios. They learn how to use ratio language to describe the association between two or more quantities, expanding their abilities to analyze relationships and see multiplicative patterns. Students learn many ways to represent ratios, starting with discrete drawings and working their way to abstract tables. These representations become important tools in their ratios toolkit, enabling students to be strategic about which tools to use for different problems (MP.5). When students work with tables and double number lines, they discover how structure can shine light on a relationship, especially when comparing multiple ratio situations (MP.7).
Throughout the unit, students see similar problems posed to them in different lessons. This is to support students learning new strategies to solve ratio problems and to compare and contrast different approaches. By the end of the unit, students should be able to select a strategy they think is best for a problem and to explain their choice.
In 4th grade and 5th grade, students learned the difference between multiplicative and additive comparisons and they interpreted multiplication as a way to scale. Students will access these prior concepts in this unit as they investigate patterns and structures in ratio tables and use multiplication to create equivalent ratios.
The work students do in this unit connects directly to Unit 2 and reappears in Unit 6 when students analyze and graph relationships between independent and dependent variables. Beyond 6th grade, students extend their understanding of ratios and rates to investigate proportional relationships in 7th grade. This sets the groundwork for the study of functions, linear equations, and systems of equations, which students will study in 8th grade and high school.
Pacing: 21 instructional days (18 lessons, 2 flex days, 1 assessment day).
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The following assessments accompany Unit 1.
Have students complete the PreUnit Assessment and PreUnit Student SelfAssessment before starting the unit. Use the PreUnit Assessment Analysis Guide to identify gaps in foundational understanding and map out a plan for learning acceleration throughout the unit.
Have students complete the MidUnit Assessment.
Use the resources below to assess student understanding of the unit content and action plan for future units.
Before you teach this unit, unpack the standards, big ideas, and connections to prior and future content through our guided intellectual preparation process. Each Unit Launch includes a series of short videos, targeted readings, and opportunities for action planning to ensure you're prepared to support every student.
Model  Example  
discrete drawing  The ratio of teaspoons of cinnamon to cups of raisins is 4:8. 

double number line  For every 2 cups of milk, there are 3 cups of flour. 

table of equivalent ratios  A turtle travels 3 feet every 9 seconds.


tape diagram  The ratio of girls to boys in a 6th grade class is 4 to 5. 
double number line
equivalent ratio
multiplicative relationship
part to part ratio
part to whole ratio
ratio
ratio table
tape diagram
To see all the vocabulary for Unit 1, view our 6th Grade Vocabulary Glossary.
To see all the materials needed for this course, view our 6th Grade Course Material Overview.
Topic A: Understanding & Describing Ratios
Topic B: Equivalent Ratios
Topic C: Representing Ratios in Tables
Topic D: Solving Part:Part:Whole Ratio Problems
Key
Major Cluster
Supporting Cluster
Additional Cluster
CCSS.MATH.PRACTICE.MP1 — Make sense of problems and persevere in solving them.
CCSS.MATH.PRACTICE.MP2 — Reason abstractly and quantitatively.
CCSS.MATH.PRACTICE.MP3 — Construct viable arguments and critique the reasoning of others.
CCSS.MATH.PRACTICE.MP4 — Model with mathematics.
CCSS.MATH.PRACTICE.MP5 — Use appropriate tools strategically.
CCSS.MATH.PRACTICE.MP6 — Attend to precision.
CCSS.MATH.PRACTICE.MP7 — Look for and make use of structure.
CCSS.MATH.PRACTICE.MP8 — Look for and express regularity in repeated reasoning.
Unit 2
Unit Rates and Percent
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