# Number Sense Blog

### Happy e Day!

Feb 7, 2015

February 7th is e Day! While not as famous as Pi Day, e Day celebrates the mathematical constant e, which has a wide range of mathematical applications. Here's a bit of background on e and why it's worthy of celebration! As the history of mathe...

Feb 4, 2015

GPS location apps on a smartphone can pinpoint where you are and offer you directions to your school, find the nearest place to get a haircut, and tell you what the weather is in your neck of the woods, among many other cool features. But how does...

### Friday Fun: Number Nonsense - Perfect Numbers

Jan 30, 2015

Happy Friday! In this week's Number NonSense cartoon, we explore perfect numbers.

### Super Bowl Problem Set

Jan 28, 2015

NFL Super Bowl XLIX is coming up this Sunday, so it’s time to warm up with some football themed math problems!   Lower Elementary: Question: Kelsey bought a pack of 92 foam fingers to root for the New England Patriots. She passed out half...

### Number NonSense: The Möbius Strip

Jan 23, 2015

Happy Friday! In this week's Number NonSense cartoon, we explore the Möbius Strip, discovered by August Möbius in the mid-1800's. Find out how to make your own Möbius Strip!

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