Can you explain the difference in the types of unit studies that I see on your website?

The Download N Go® unit studies are designed for grades K-4, and they take approximately 1-2 weeks to complete.

The Passport Geography™unit studies take an interactive look at world geography in a whole new way for grades K-12.

The Unit Study Adventure™ unit studies area designed for grades K-12 are they take approximately 4 weeks to complete.