About
Want to understand mathematics? This place is for you! Free videos + free ebooks = better education. Chris Tisdell is mathematician, educator, author and former DJ. He is a champion of free and open online learning resources.
X
About
Want to understand mathematics? This place is for you! Free videos + free ebooks = better education. Chris Tisdell is mathematician, educator, author and former DJ. He is a champion of free and open online learning resources.
Tags