In a classroom, teachers teach all students together, but not every student understands concepts at the same pace. Many students remain silent when they are confused due to fear, hesitation, or lack of confidence. These learning gaps often remain unnoticed until exams, assignments, or poor academic performance reveal them. As a result, students fall behind, lose confidence, and struggle to keep up with future lessons. There is currently no simple and effective way to identify concept-wise understanding of every student in real time, making hidden learning gaps a widespread educational challenge.