Easy Grammar Ultimate
Most children dread grammar study because it is too complex. But Easy Grammar is just that, easy.
What sets Easy Grammar apart from other grammar programs is the key role prepositions play. Once your child can identify and eliminate the prepositional phrases in a sentence, determining the subject, verb, and other parts of speech is much easier. If you lack an adequate grammar background and find even the preceding sentence to be intimidating, relax. The hardest part will be memorizing the prepositions. After that, everything falls into place.
#3 and #4 Grammar and Other Concepts
#5 Sentence Combining (with an emphasis on expository [informational] writing)