Visit illuminations.nctm.org for hundreds of free lessons and activities!
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. http://ow.ly/jATf304R4Zn
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...
10/27/2016
Have you played Calculation Nation? 13 games to play! Can you reach the Grand Master status? http://ow.ly/s2BI304R5WF
Calculation Nation® - Challenge others. Challenge yourself.® Calculation Nation® is a free education service of The National Council of Teachers of Mathematics. NCTM is a public voice of mathematics...
10/24/2016
Kick off basketball season w/ this HS lesson, where students plot data, identify lines of best fit, & detect outliers. http://ow.ly/oPlW304R0UG
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....
10/20/2016
Encourage students to use visualization, spatial reasoning, and geometric modeling to build their own patterns or recreate one from given square arrays. http://ow.ly/i8im304R3I8
Creating, Describing, and Analyzing Patterns Get your elementary students thinking about patterns using this mobile-friendly interactive.
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. http://ow.ly/aW1W304QL4T
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....
10/15/2016
October 15 is Bridge Day! Celebrate it with one of NCTM's most popular updated lesson, Barbie Bungees Again! http://ow.ly/OsTL304QKHQ
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 !...
10/10/2016
Get your high school students ready for Halloween with this geometry puzzle, Trick or Treat. http://ow.ly/z5S7304QMRf
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...
10/04/2016
Demystify order of operations while celebrating Polish American Heritage Month with this high school lesson. http://ow.ly/kRSc304QXUw
09/22/2016
Happy First Day of Fall! There are a lot of exciting things going on this fall. Make sure you're a part of the learning and fun.
Math Education Events Find an event near you.
09/19/2016
Start the week off with this license plate brain teaser! Share your solution with us. http://ow.ly/h90v304hPmw
Illuminations: Brain Teasers License Plate
09/16/2016
How have you used NCTM's Classroom Resources successfully? Be featured in our Success Stories by e-mailing us at [email protected]. http://ow.ly/ijJ5304hOaT
Illuminations Success Stories Read and share experiences of how people have used Illuminations’ resources.
09/13/2016
This one is a tricky brainteaser, you have to rummage around a bit to get the answer. Try it out and see what you can come up with. http://ow.ly/Ed3h303L3tE