NCTM Illuminations

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Brain Teasers 10/31/2016

Happy Halloween from NCTM Illuminations. We hope your day is full of lots of tricks and treats. Celebrate with this candy themed brain teaser.

Brain Teasers A bowl contains 75 candies, identical except for color. Twenty are red, 25 are green, and 30 are brown. Without looking, what is the least number...

Impact of a Superstar 10/24/2016

Kick off basketball season w/ this HS lesson, where students plot data, identify lines of best fit, & detect outliers.

Impact of a Superstar In this activity, students will use the Illuminations Line of Best Fit Interactive to plot the data from two teams during the 2004‑05 NBA season....

A Meter of Candy 10/18/2016

Get in the Halloween spirit with this MS lesson designed to develop and reinforce students' understanding of hundredths as fractions, decimals, and percentages.

A Meter of Candy In this series of 3 hands-on activities, students develop and reinforce their understanding of hundredths as fractions, decimals, and percentages....

Barbie Bungee 10/15/2016

October 15 is Bridge Day! Celebrate it with one of NCTM's most popular updated lesson, Barbie Bungees Again!

Barbie Bungee The consideration of cord length is very important in a bungee jump-too short, and the jumper doesn't get much of a thrill; too long, and ouch !...

Brain Teasers 10/10/2016

Get your high school students ready for Halloween with this geometry puzzle, Trick or Treat.

Brain Teasers Ralph and Rona were trick-or-treating when they arrived at the cul-de-sac shown at left. The cul-de-sac was in the shape of a regular nonagon...

Timeline photos 10/04/2016

Demystify order of operations while celebrating Polish American Heritage Month with this high school lesson.

Timeline photos 09/11/2016

How are you planning to remembering 9/11? Here's a lesson to use w/ your high school Ss

Brainteasers 09/07/2016

Get your brain working with this brainteaser. Solve the problem and view the solution. Oh and don't forget to share your answers with us!


Timeline photos 09/05/2016

We wish you a long & relaxing Labor Day Weekend! Happy Labor Day!

Timeline photos 09/02/2016

DYK that the Calculation Nation games have accompanying lessons? Check them out here!


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About Illuminations 08/24/2016

Learn a little bit more about who we are and what we do.

About Illuminations Illuminations works to serve you by increasing access to quality standards-based resources for teaching and learning mathematics, including...

Ice Cream Cones 08/16/2016

Keep cool this summer with an ice cream inspired math lesson.

Ice Cream Cones Students are encouraged to discover all the combinations for ice cream cones. They use problem-solving skills (including elimination and collection...

Back to School 08/15/2016

Want quick ideas for engaging back-to-school icebreaker classroom activities? We've got you covered! Challenge your students with these puzzles. Browse the entire Illuminations library and discover what's in store for the rest of the school year.

Back to School Brainteasers

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