Proportional Reasoning
Understand ratios and proportional relationships using visuals and your intuition.
Setting Up Ratios
Scaling Up
Scaling Down
Making a New Mixture
Scaling Up Recipes
Making Batches
Finding Batches
Scale Factor
Scaling Down to Scale Up
Scaling in One Move
Finding the Total
Finding the Parts
How Much for One
Computing Unit Rates
Two Unit Rates
Scaling Down to Scale Up
Using Unit Rates
Using Unit Rates to Find Cost
Finding Unit Cost
Comparing Rates
Plotting Points
Plotting Equivalent Ratios
Using Graphs
Plotting Unit Rate
Graphing Relationships
Constant of Proportionality
Writing Equations
Equation from a Point
Graphing from an Equation
Graphing Comparisons
Up next
Solving Equations
Start your algebra journey here with an introduction to variables and equations.
Course description
Through mixing paints, mixing juice drinks, and reasoning about the price of goods and services, you'll build understanding of scaling ratios up and down. You'll develop the powerful tools of graphs and equations for describing these situations.
Topics covered
- Equivalent Ratios
- Scaling Ratios
- Unit Rates
- Graphs of Proportional Relationships
- Equations for Proportional Relationships
Prerequisites and next steps
This course is for anyone ready for a refresher and new challenges on core concepts.