The Lab Gear books I wrote for Didax are the best books on how to use algebra manipulatives to teach a wide range of topics. (Where to get the books.) Unfortunately, they contain some errors, many of them minor. As I create corrected versions of those pages, I will post them here. If you find more errors, let me know!

If your books have "A B C D E 20 19 18 17 16" near the bottom of page ii, you have the first printing. Here are some corrected pages, which were fixed in the second printing:

*Algebra Lab Gear: Basic Algebra*

*Algebra Lab Gear: Algebra 1*

If your books have "A B C D E 20 19 18 17" near the bottom of page ii, you have the second printing. Here are some corrected pages, which were fixed in the third printing: