# Index of *Classroom Challenges*

*Classroom Challenges* are lessons that support teachers in formative assessment. There are 100 lessons in total, 20 at each grade from 6 to 8 and 40 for ‘Career and College Readiness’ at High School Grades 9 and above. Some lessons are focused on developing math concepts, others on solving non-routine problems.

The Brief Guide for teachers and administrators (PDF) is recommended reading before using these lessons for the first time.

Each lesson is downloadable as an all-in-one PDF to print out, and a supporting PowerPoint presentation.

## Finding a Lesson

There are several ways of navigating:

- Use the menu on the left to browse by grade and topic area, or search for a key phrase.
- Go to the Standards tab to find lessons linked to a particular content standard or practice.
- The complete set of lessons is listed below in alphabetic order.

## Grade 6

Adding and Subtracting Directed Numbers

Designing 3D Products: Candy Cartons

Evaluating Statements About Number Operations

Evaluating Statements: Consecutive Sums

Interpreting Multiplication and Division

Maximizing Profit: Selling Soup

Modeling Relationships: Car Skid Marks

Optimizing Coverage: Security Cameras

Representing Data With Grouped Frequency Graphs and Box Plots

Representing the Laws of Arithmetic

Representing Variability with Mean, Median, Mode, and Range

Sharing Costs Equitably: Traveling to School

Translating between Fractions, Decimals and Percents

Using Coordinates to Interpret and Represent Data

## Grade 7

Classifying Proportion and Non-Proportion Situations

Comparing Data Using Statistical Measures

Comparing Strategies for Proportion Problems

Describing and Defining Quadrilaterals

Describing and Defining Triangles

Designing a 3D Product in 2D: A Sports Bag

Estimating Volume: The Money Munchers

Evaluating Statements About Probability

Increasing and Decreasing Quantities by a Percent

## Grade 8

Applying Properties of Exponents

Building and Solving Linear Equations

Classifying Solutions to Systems of Equations

Comparing Fuel Consumption: Buying Cars

Comparing Lines and Linear Equations

Comparing Value for Money: Baseball Jerseys

Defining Lines by Points, Slopes and Equations

Discovering the Pythagorean Theorem

Estimating Length Using Scientific Notation

Finding the Shortest Route: A Schoolyard Problem

Generalizing Patterns: The Difference of Two Squares

Interpreting and Using Data: Setting Taxi Fares

Interpreting Distance–Time Graphs

Matching Situations, Graphs and Linear Equations

Representing and Combining Transformations

Sampling and Estimating: How Many Jellybeans

Solving Linear Equations in One Variable

## High School

Building and Solving Complex Equations

Calculating Arcs and Areas of Sectors of Circles

Calculating Volumes of Compound Objects

Classifying Equations of Parallel and Perpendicular Lines

Classifying Rational and Irrational Numbers

Deducting Relationships: Floodlight Shadows

Devising a Measure: Correlation

Evaluating Conditions for Congruency

Evaluating Statements About Enlargements

Evaluating Statements About Length and Area

Evaluating Statements about Radicals

Evaluating Statements about Rational and Irrational Numbers

Generalizing Patterns: Table Tiles

Generating Polynomials from Patterns

Inscribing and Circumscribing Right Triangles

Interpreting Algebraic Expressions

Interpreting Data: Muddying the Waters

Maximizing Profits: Selling Boomerangs

Modeling Population Growth: Having Kittens

Proving the Pythagorean Theorem

Representing Conditional Probabilities 1

Representing Conditional Probabilities 2

Representing Data with Box Plots

Representing Data with Frequency Graphs

Representing Functions of Everyday Situations

Representing Inequalities Graphically

Representing Linear and Exponential Growth

Representing Polynomials Graphically

Representing Probabilities: Medical Testing

Representing Quadratic Functions Graphically

Representing Trigonometric Functions

Solving Linear Equations in Two Variables

Solving Problems with Circles and Triangles

Sorting Equations and Identities

Sorting Equations of Circles 1