New York Times
New York Times: Crossword Puzzle: Grammar
An interactive and printable crossword puzzle developed by the New York Times Learning Network. The theme of this puzzle is Grammar. Other links are included.
Quia
Quia: Simple Subjects & Predicates Rags to Riches Game
Based on the popular "Who Wants to be a Millionaire?" this game offers the chance to climb to each level, get hints and get feedback.