That the sun lies at the center of the solar system with the planets moving about it and the whole arrangement determined by gravity seems obvious to us today, but that is because we are surrounding by depictions of the solar system in that configuration.
Teaching Thinking, not Thoughts
Surely, it is no wonder that logic is not commonly implemented if we do not even prioritize or value it sufficiently to dedicate a single course to it.
Euclid’s Elements Review
If I were ever teaching a geometry class, I would not go to McDougal-Little or Pearson or the other big-name textbook publishers, but would instead direct my students to obtain a copy of Euclid’s Elements, and build my curriculum around it.
IGC Publishing 