An educator who cannot change the oil in his own car cannot speak to children about rotary motion or how engines have changed the world. Educators are incompetent. All educators can do is communicate their own incompetence, disinterest and contempt for the knowledge of physical world reality. Educators think that if you memorize the essentials of something, then you know about that something. Learning in school always means memorizing no matter what anyone says.
Science is knowledge of the physical world and nature.
This knowledge cannot be acquired through memory. A child cannot learn about plant life by collecting a sample of leaves each fall and memorizing the names of the leaves for a test. In fact, such an exercise only teaches children to abhor anything that has to do with leaves and trees and nature itself. But, educators do not live in reality. They live in a made-up Disneyland of ideas.