Educators have known for decades that this creates a brittle form of learning. Students become masters of "answer getting"—copying steps, guessing operations, or just peeking at the back of the book—without ever understanding why an algorithm works.

In a world obsessed with standardized test scores and instant answers, Spax forces a pause. It asks the student: "Don't tell me the number. Show me how you think."

And that is a far harder—and far more valuable—question. Have you used Spax Math in your school? Let me know your experience in the comments below.