Books similar to the following can be used with the lessons in the fifth grade kit.
Algebra Lessons
The Grapes of Math by Greg Tang
I Spy Two Eyes: Numbers in Art by Lucy Micklethwait
Sea Squares by Joy N. Hulme
The King’s Chessboard by David Birch
Data Analysis Lessons
Black Star, Bright Dawn by Scott O’Dell
The Million Dollar Shot by Dan Gutman
Scholastic Book of World Records
Guinness Book of World Records
The World Almanac For Kids