Can you link to the rules / cookbook if available?
The description is in Norwegian but I can give a quick summary: It gives recipes for breakfast, lunch boxes, food for hiking trips (hiking is very common in Norway), dinner, supper and snacks. The recipes are simple and tasty. There are discussion of what is healthy and what one should eat.
It has different authors. One of the co-authors is Rune Blomhoff who is nutritional science professor at university of Oslo and one of the leading researchers in the world on anti-oxydants.
In our book there are discussion for each dish what part of the food making the kids can participate in. It is to encourage children to learn about food themselves and get used to making healthy food themselves.