Dan and Jan - Hardcover book from ABCmouse.com. 4 years & up, 32 pages. Meet Dan and Jan, two friends who love to run, jump, and even dance together, in the ABCmouse.com title Dan and Jan. Through a charming story, Dan and Jan will help young readers learn words in the –an word family. This hardcover book features charming full-color illustrations to support comprehension and contains several important sight words such as all, so, and sees.