Number Sense Blog

It may not be sunny outside, but we have to admit—we’re in a summertime state of mind! In March, we want to know what your summer dreams are… and how math will help make them a reality! From saving up for a new bike to learning new shapes to bring...

2016 is a leap year, and February, the shortest month of the year, gains an extra day—February 29th, otherwise known as leap day! So why do we have leap years and days? Leap years and days are adjustments built into the calendar’s structure to ...

(Image via Quinn Dombrowski on Flickr) On this Word Problem Wednesday, a rare variant of a toothy reptile takes center stage! Solve our alligator word problem; we'll update with the answer tomorrow! One out of every 250,000 alligators is bor...

As we continue to celebrate math in all its beauty, here's an ancient Chinese geometric puzzle that's fun and challenging... and will give your spatial recognition skills a boost! A tangram consists of seven moveable shapes called tans, which are ...

It's another Word Problem Wednesday! In February, we're all about celebrating the beauty of math in all its forms... one of which is the geometric art of origami. Give our origami-themed word problem a try; we'll update with the answer tomorrow! ...