These letters-inside-baby-food-jar-lids are a part of a game I made Isaac for Christmas. Last week he found a whole new way to play with them.
Using a shovel Isaac scoops up a letter, says it's name and what sound it makes, and then dumps it into his bucket. He's practicing letter recognition, phonics, and fine motor skills, and to him it's just plain fun!
I think the best learning takes place when kids are having fun. :)