Even at the first lessons, the “solve for x” vs substitution - why in the world would any sane individual opt for the first way? And where did you come up with those completely random numbers given? It makes entirely no sense. Might as well select from a hat - at least how it’s presented. The explanations on “why” and where those numbers come from, there’s no reasoning. As presented, they’re entirely nonsense. An explanation is absolutely necessary otherwise this is a “blocker” from progressing entirely.
Thank you for taking the time to explain this. I think your criticism is fair, especially about the lack of reasoning behind the examples.The first level is intended as a warm-up, not really as a lesson on "solving for x." Its purpose is to make sure learners are comfortable with basic integer arithmetic before moving into algebra. However, I can see that the way it is currently narrated makes the numbers feel arbitrary and doesn't clearly explain why we're doing these calculations in the first place.We'll be updating the narration of this lesson in the next update to make its purpose much clearer. We'll explain why these arithmetic operations are being practiced, where the examples come from, and how they prepare you for the algebra concepts that follow.Thanks again for pointing this out. Feedback like this helps us make the lessons more logical and beginner-friendly.