5 books in series

I Used to Know That

I Used to Know That is a 5-book series with 5 released primary works first released in 2008 with contributions by Caroline Taggart, Patrick Scrivenor, Will Williams, Chris Waring, and Fred DuBose.

I Used to Know That: Stuff You Forgot From School

5 I Used to Know That

2008 • 2 Readers • 192 pages

I Used to Know That: Maths

5 I Used to Know That

2010 • 1 Reader • 192 pages 4