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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

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...
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Have you played Calculation Nation? 13 games to play! Can you reach the Grand Master status? http://ow.ly/s2BI304R5WF

Calculation Nation® is a free education service of The National Council of Teachers of Mathematics. NCTM is a public voice of mathematics...
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Posts

Kick off basketball season w/ this HS lesson, where students plot data, identify lines of best fit, & detect outliers. http://ow.ly/oPlW304R0UG

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....
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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

Get your elementary students thinking about patterns using this mobile-friendly interactive.
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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

In this series of 3 hands-on activities, students develop and reinforce their understanding of hundredths as fractions, decimals, and percentages....
illuminations.nctm.org

October 15 is Bridge Day! Celebrate it with one of NCTM's most popular updated lesson, Barbie Bungees Again! http://ow.ly/OsTL304QKHQ

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 !...
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Get your high school students ready for Halloween with this geometry puzzle, Trick or Treat. http://ow.ly/z5S7304QMRf

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...
illuminations.nctm.org

Get your elementary students thinking about patterns using this mobile-friendly interactive. http://ow.ly/onQE304R3s2

Encourage students to use visualization, spatial reasoning, and geometric modeling to build their own patterns or recreate one from given square...
illuminations.nctm.org

Demystify order of operations while celebrating Polish American Heritage Month with this high school lesson. http://ow.ly/kRSc304QXUw

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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. http://ow.ly/Xpa1304spqN

Find an event near you.
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Start the week off with this license plate brain teaser! Share your solution with us. http://ow.ly/h90v304hPmw

License Plate
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How have you used NCTM's Classroom Resources successfully? Be featured in our Success Stories by e-mailing us at illuminations@nctm.org. http://ow.ly/ijJ5304hOaT

Read and share experiences of how people have used Illuminations’ resources.
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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

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Need some Monday Motivation? Read this Teachers's Success Story about a "breakthrough" moment http://ow.ly/NjSU303KWxj

A Success Story
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How are you planning to remembering 9/11? Here's a lesson to use w/ your high school Ss http://ow.ly/7ljy303KSqg

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Try Calculation Nation. A world of online math strategy. http://ow.ly/MzxG303KWjb

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Is your classroom 1-1? Check out NCTM Illuminations' mobile resources. Which one is your favorite? http://ow.ly/nJ7D303KTeF

NCTM Illuminations
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