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:

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

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 Motion: Rolling Cups

Modeling Population Growth: Having Kittens

Proving the Pythagorean Theorem

Representing 3D Objects in 2D

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

Solving Quadratic Equations

Sorting Equations and Identities

Sorting Equations of Circles 1

Sorting Equations of Circles 2

Transforming 2D Figures