A real red pen
MasterG marks the notebook the way a teacher does: ticks, crosses, a circle round the wrong step, short notes in the margin. Always handwritten, never typed.
MasterG watches every line, catches the mistake, and lets your child find the fix on their own.
Just like evening tuition: a notebook, a pencil, and MasterG watching every line you write.
Write the question by hand, or snap the textbook page. MasterG reads it either way.
MasterG follows each line as it's written. When it's going right, he stays quiet.
A red circle on the wrong step. No answer handed over, just a question: where did it go wrong?