Typing Sites I use in OT:
ABCYA.com -good for typing games geared to each grade level, found under skills tab in grade menu. Most are quite animated and fun, engaging young students particularly well. If your child is still quite unfamiliar with the keyboard or scanning and reaction speed needs development, begin with games that are not timed with quickly floating by letters. These would include cup stack typing and jump key.
TypeDojo.com -good for grade leveled typing lessons and tests that track progress. These can also be tailored to target common core sight word lists, word length, phrases...
wordgames.com -this site has finger frenzy, a simple sequential alphabet typing game race that records time but doesn't time out. Good for keyboard familiarity and building speed.