content: Letter Factory, Talking Words Factory, Code Word Caper, Fridge Phonics, Fridge Words Magnetic Word BuilderWhen my son was 22 months old he could tell me the letters and their sounds because of this system. We started with the DVDs. Then we added Fridge Phonics. After a couple months I added the Word Builder. I only let him have about 10 or 12 letters at a time so he doesn't get overwhelmed. When I had too many out, he would knock them to the floor. He's 28 months old now. He doesn't make real words yet. But that's coming soon!But watch out for the fridge magnets. Leapfrog changed the sizes. The Word Whammer and the older Phonics with the Frog have the letters that match. The ones with Scout the Dog and the Sun match the Jet (word builder).