Hi breal,

There are 2 primary disadvantages to not getting the OG12.

First, you won't be able to complete the recommended diagnostic tests. Second, you will have fewer practice questions to reinforce each day's topic.

Having said that, I have categorized the math questions in the OG Math (2nd edition) text, and you are directed to tackle these questions on individual days (in the Additional Reinforcement section)

I hope that helps.

Cheers,
Brent

breal wrote:Greetings,

I already own copies of the OG Math and OG Verbal 2nd edition. Are these suitable substitutions for the OG12 text or will I have trouble following along with the daily assignments/emails?

Thank you.