Thursday, April 24, 2014

Day 97: Powers of Two

If the tiles always pop up as 2s, how many moves has this player made?

Wednesday, April 23, 2014

Day 96: How many miles is good enough for a bus?

From the walls of the DC Metro, this ad:

How about that 8,260 miles? No, we can't talk about shoes.


Tuesday, April 22, 2014

Monday, April 21, 2014

Day 94: Sierpinski

This time, YOU ask a question. Put it in the comments.


Go 3D

Sunday, April 20, 2014

Day 93: Linear or Quadratic?

Is the expression  x² + 6x = x² - 8x + 4 "quadratic" or linear?