What are Scaled Copies?

Corresponding Parts and Scale Factors

Making Scaled Copies

Scaled Relationships

The Size of the Scale Factor

Scaling and Area

Scale Drawings

Scale Drawings and Maps

Creating Scale Drawings

Changing Scales in Scale Drawings

Scales without Units

Units in Scale Drawings

Draw It to Scale

One of These Things Is Not Like the Others

Introducing Proportional Relationships with Tables

More about Constant of Proportionality

Proportional Relationships and Equations

Two Equations for Each Relationship

Using Equations to Solve Problems

Comparing Relationships with Tables

Comparing Relationships with Equations

Solving Problems about Proportional Relationships

Introducing Graphs of Proportional Relationships

Interpreting Graphs of Proportional Relationships

Using Graphs to Compare Relationships

Two Graphs for Each Relationship

Four Representations

Using Water Efficiently

How Well Can You Measure?

Exploring Circles

Exploring Circumference

Applying Circumference

Circumference and Wheels

Estimating Areas

Exploring the Area of a Circle

Relating Area to Circumference

Applying Area of Circles

Distinguishing Circumference and Area

Stained-Glass Windows

Lots of Flags

Ratios and Rates With Fractions

Revisiting Proportional Relationships

Half as Much Again

Say It with Decimals

Increasing and Decreasing

One Hundred Percent

Percent Increase and Decrease with Equations

More and Less than 1%

Tax and Tip

Percentage Contexts

Finding the Percentage

Measurement Error

Percent Error

Error Intervals

Posing Percentage Problems

Interpreting Negative Numbers

Changing Temperatures

Changing Elevation

Money and Debts

Representing Subtraction

Subtracting Rational Numbers

Adding and Subtracting to Solve Problems

Position, Speed, and Direction

Multiplying Rational Numbers

Multiply!

Dividing Rational Numbers

Negative Rates

Expressions with Rational Numbers

Solving Problems with Rational Numbers

Solving Equations with Rational Numbers

Representing Contexts with Equations

The Stock Market

Relationships between Quantities

Reasoning about Contexts with Tape Diagrams (Part 1)

Reasoning about Contexts with Tape Diagrams (Part 2)

Reasoning about Equations and Tape Diagrams (Part 1)

Reasoning about Equations and Tape Diagrams (Part 2)

Distinguishing between Two Types of Situations

Reasoning about Solving Equations (Part 1)

Reasoning about Solving Equations (Part 2)

Dealing with Negative Numbers

Different Options for Solving One Equation

Solving Problems about Percent Increase or Decrease

Reintroducing Inequalities

Finding Solutions to Inequalities in Context

Efficiently Solving Inequalities

Interpreting Inequalities

Modeling with Inequalities

Subtraction in Equivalent Expressions

Expanding and Factoring

Combining Like Terms (Part 1)

Combining Like Terms (Part 2)

Combining Like Terms (Part 3)

Relationships of Angles

Adjacent Angles

Nonadjacent Angles

Solving for Unknown Angles

Using Equations to Solve for Unknown Angles

Building Polygons (Part 1)

Building Polygons (Part 2)

Triangles with 3 Common Measures

Drawing Triangles (Part 1)

Drawing Triangles (Part 2)

Slicing Solids

Volume of Right Prisms

Decomposing Bases for Area

Surface Area of Right Prisms

Distinguishing Volume and Surface Area

Applying Volume and Surface Area

Building Prisms

Mystery Bags

Chance Experiments

What Are Probabilities?

Estimating Probabilities Through Repeated Experiments

More Estimating Probabilities

Estimating Probabilities Using Simulation

Simulating Multi-step Experiments

Keeping Track of All Possible Outcomes

Multi-step Experiments

Designing Simulations

Comparing Groups

Larger Populations

What Makes a Good Sample?

Sampling in a Fair Way

Estimating Population Measures of Center

Estimating Population Proportions

More about Sampling Variability

Comparing Populations Using Samples

Comparing Populations With Friends

Memory Test

Planning Recipes

Costs of Running a Restaurant

More Costs of Running a Restaurant

Restaurant Floor Plan

How Crowded Is this Neighborhood?

Fermi Problems

More Expressions and Equations

Measurement Error (Part 1)

Measurement Error (Part 2)

Measuring Long Distances Over Uneven Terrain

Building a Trundle Wheel

Using a Trundle Wheel to Measure Distances

Designing a 5K Course

Let’s estimate some quantities.

What is your exact age at this moment?

How many times has your heart beat in your lifetime?

How many strands of hair do you have on your head?