Originally Posted by PAndrade
... reading/writing- Is there any online curriculum or game for this that he can do at home?

1) Khan Academy, well-known for math, has instruction in reading and writing. Also on YouTube.
2) Gifted Homeschoolers' Forum (GHF) offers a list of resources which may be of interest http://giftedhomeschoolers.org/resources/favorite-things/favorite-things-language-arts/