I figure there is a certain window to introduce electricity and magnetic circuits to my girl. After which, she won't be interested in that. She likes science and math, so we got her a circuit kit for Christmas. Carson was amazed that she could actually build something with circuits. She "built a circuit that ran a fan and lights. She also learned how that nice man jump started our car on Christmas by building a circuit and then "jumping" another light. She even made up her own inventions. She is one clever girl. Later, she went straight for the kids sewing book and made herself (with a little help) a stuffed tomato head. The kids are having so much fun with all their toys and puzzles that they got for Christmas. Moms are really happy they can go back to school tomorrow!!!