One of the moms in our LEARN homeschooling group loves tennis, so it makes sense that that is what she is sharing with our children. I've never remembered the rules or details to the game (I do believe I learned them for a week or two in high school). It is so much fun to go and actively participate in the learning with my kids. Today's lesson included the names of the lines. The back line is the base line, the outside lines are the doubles lines, the inside lines are the singles lines, and the center line is the service line. I'm learning all sorts of things!