> I think for such young children it's fine to concentrate on
> their litrle worlds and let the earth wait for when they are
> older and able to grasp the concept of world, earth, etc.
If children are old enough to be consumers, thereby generating
solid waste, and if they can understand simple words such as
trash, garbage truck, etc., they're ready to learn to be
environmentally responsible. Making an edible landfill will be a
fun way to teach young ones where garbage goes after it's picked
up from the curb.
Edible Landfill Recipe