As a parent its our responsibility to teach our kids,basics of Islam from early age. Make a special effort to educate them in interesting way. I have learned this from Alhuda , where they are teaching kids different Sunnahs and Duas with animated videos. I found them very informative and interesting for kids. Its a better way to teach your kids.
I am sharing two videos here you can teach from videos more effectively.
If you have eaten by mistake during fast.