Happy Pi Day! At 3/14/15 when the time is 9:26, am and pm, the time will be accurate to pi for 7 decimal places. What’s your favorite fact about pi? I made a video with 5 facts for…

- 2 weeks, 2 days, 6 hours, 33 minutes ago# Mind Your Decisions

## What Do Economists Say About Daylight Savings Time? Game Theory Tuesdays

image by Arjan. CC BY 2.0 On Sunday we shifted our clocks one hour forward to start daylight savings time. Why do we do this, and is there any rationale for continuing to do it? There are…

- 2 weeks, 5 days, 21 hours, 29 minutes ago## Solution To 15 Puzzle

Last week I posed the famous 15 Puzzle which is often stated as an impossible sliding block puzzle. I made a variation that had a solution. So here are the hints. 1. The pieces were round…

- 2 weeks, 6 days, 22 hours, 57 minutes ago## Monday Puzzle: The Marble Color Puzzler

I have 3 blue marbles and 3 red marbles. I place 2 blue marbles under one bowl, 2 red marbles under another, and 1 blue and 1 red in a third bowl. I mix up the bowls and randomly pick one…

- 2 weeks, 6 days, 22 hours, 58 minutes ago## Watch This Smartphone App Solve Math Problems (Sample Common Core Exam)

I’ve posted a new video that I think you’ll enjoy. Watch This Smartphone App Solve Math Problems The PhotoMath App can solve many algebra problems. It’s free and…

- 3 weeks, 3 days, 3 hours, 37 minutes ago## Watch This Smartphone App Solve Math Problems (Sample Common Core Exam)

I’ve posted a new video that I think you’ll enjoy. Watch This Smartphone App Solve Math Problems The PhotoMath App can solve many algebra problems. It’s free and…

- 3 weeks, 3 days, 3 hours, 37 minutes ago## Watch This Smartphone App Solve Math Problems (Sample Common Core Exam)

I’ve posted a new video that I think you’ll enjoy. Watch This Smartphone App Solve Math Problems The PhotoMath App can solve many algebra problems. It’s free and…

- 3 weeks, 3 days, 3 hours, 37 minutes ago## Watch This Smartphone App Solve Math Problems (Sample Common Core Exam)

## Watch This Smartphone App Solve Math Problems (Sample Common Core Exam)

## The Stable Marriage Problem (Gale-Shapley Algorithm) – An Algorithm Recognized In the 2012 Nobel Prize And Used In The Residency Match

I’ve been meaning to post about this for a while now, especially after the 2012 Nobel Prize went to Alvin Roth and Lloyd Shapley for work in matching markets. I have made a video that…

- 3 weeks, 5 days, 21 hours, 59 minutes ago