Mind Your Decisions

Now Available – The Best Mental Math Tricks

Just a short announcement my new book The Best Mental Math Tricks is now available. The book contains a mixture of topics I’ve covered and new material. You can read a thorough review…

- 1 week, 1 day, 11 hours, 3 minutes ago

Game Theory In The News (Feb 2015)

This is the current installment of the monthly series “Game Theory in the News.” My hope is to highlight stories that can be used as case studies in the classroom, both so…

- 1 week, 2 days, 11 hours, 3 minutes ago

How To Solve A Rubik’s Cube [Videos]

I want to teach you how to solve the Rubik’s cube! I’ve made a series of 5 videos that explain step-by-step exactly how you can solve the cube. If you need a cube, there are…

- 1 week, 3 days, 10 hours, 58 minutes ago

Monday Puzzle: Divide Into 4 Equal Parts

Today’s puzzle is a dissection problem. Can you divide the following shape into 4 equal parts, where each part is the same shape? Dimensions are not listed because the figure is…

- 1 week, 4 days, 11 hours, 3 minutes ago

How To Remove Moisturizer From The End Of A Bottle

There’s often a lot left in the bottle when you think it’s empty. Consumer Reports found that about 17 to 25 percent of the moisturizer is still left in “empty”…

- 1 week, 4 days, 16 hours, 30 minutes ago

Video – Win At Connect Four Every Time! The World’s First Online Connect 4 Solver

For this edition of Game Theory Tuesdays, I have posted a video that I think you’ll enjoy. Win At Connect Four Every Time! For more videos on math and game theory, please check out…

- 2 weeks, 3 days, 10 hours, 28 minutes ago

Monday Puzzle: Two Heads In A Row

image by frankieleon. CC BY 2.0 In honor of President’s Day, let’s do a math problem to remember Abraham Lincoln (penny) and George Washington (quarter). What is the average…

- 2 weeks, 4 days, 11 hours, 4 minutes ago

Scam School The Countdown Prediction – A Mathematical Proof of Why It Works

Brian Brushwood has a YouTube channel Scam School that teaches how you can “scam” your friends out of drinks. Many of the tricks involve mathematical principles and are really…

- 2 weeks, 5 days, 11 hours, 3 minutes ago

New Video – How To Divide By 13

Happy Friday the 13th! I have posted a new video to my YouTube channel that I think you’ll enjoy about how to divide a number by 13 in your head. How To Divide By 13 For those that…

- 3 weeks, 10 hours, 58 minutes ago

Available Soon – The Best Mental Math Tricks

I’m excited to announce my new book The Best Mental Math Tricks will be available soon. More details to follow when it’s released. If you’re interested in a review copy,…

- 3 weeks, 17 hours, 7 minutes ago