Letting the kids take the reins in the kitchen can be tough, but when you're there to supervise and lend a hand when needed and they have the right recipes, it can be a really great experience. Karen Ward's book The Young Chef's Mexican Cookbook from the I'm the Chef! series is a great place to start. It's designed specifically for little cooks, ages seven and older, and includes safety tips, a helpful glossary, detailed instructions and loads of pictures for its kid-friendly meals.
Along with recipes for entrees, side dishes, soups and desserts, there is a section that shares the sights, traditions and celebrations of El Dia de Los Muertos, the Day of the Dead. It's a really cool cookbook for kids, and the food is amazing.
With my wife being of Latin descent, we think it's important to share traditions of her culture with our children. I bought this childrens' cookbook a year ago, and while my sons are still too young to man the kitchen on their own, they love working by our sides to prepare some excellent meals together. I think they're just as excited as I am for the day to come when they can do it all by themselves.