We need to prepare our children to understand rocks. To be able to deal with the rocks they may find in their future. The rocks they may find beautiful, or useful, or difficult. A rock teaches observation, ideas, innovation. A rock teaches communication, understanding, self-knowledge.
Rocks prepare our children for the workplace.
For their future. If we remember that students can learn the same thing from a rock as a computer, then we can put computers on their desks. And then they can have the fantastic opportunity to experience all the dazzling specifics of what a computer has to offer.