Back in my lightning calculator post, I mentioned plus magazine, a free online magazine showing the fun side of math.

Now, the Pacific Institute for the Mathematical Sciences has jumped into the free mathematical magazine arena with their Pi In The Sky Magazine. It's geared towards high school math students, but is a great and fun read for just about anyone interested in math.

All of the issues (10, at this writing) are available online as PDF files. Issue 10 caught my attention because of its focus on mathematical games and puzzles. They have great articles on games and puzzes like Sudoku, Nim and the Monty Hall Dilemma.

If you enjoy this issue, you'll find plenty to enjoy in the past issues, too!