When the graded papers were returned, a bright "5" (the top grade) was circled at the top. The Ershova workbook wasn't just a collection of homework; it was the key that finally made the shapes make sense.
By Level B, the challenge increased. He had to prove why two triangles were congruent. He reached for the "GDZ" (ready-made homework solutions) his older brother had tucked into the back of the book. He didn't use it to cheat; he used it as a compass. When he got stuck on a proof, he’d peek at the next logical step, realize his mistake, and then close the book to finish the rest himself. When the graded papers were returned, a bright
Here is a short story about a student's experience with this specific workbook. The Angle of Success He had to prove why two triangles were congruent