Stay Mathactive
Maths, made simple — without losing its depth.
Notes, practice sets, GeoGebra visuals and video solutions for Class XI, Class XII and JEE (Main & Advanced) — by Ashutosh Kumar.
Latest from Stay Mathactive
See all on YouTube →Explore Mathemission
Pick your class — notes, practice and printables for each chapter.
XI
Class XI
Chapter notes, practice sets and printables for CBSE Class XI.
Class XI Notes & Practice →Video series
Real exam questions, worked back to the ideas behind them.
FTQTCJEE MAINFrom The Question To ConceptOne real JEE Main question, worked back to the idea that unlocks it.Watch the series → TWBWJEE ADVANCEDThe Why Behind WhatJEE Advanced problems, with the reason behind every step.Watch the series → SQYOUR DOUBTSStudent’s QuestReal questions from students, answered on video.Watch the series →
Stuck on a problem? Ask it here.
Post your doubt — a photo of your attempt helps. Selected questions are answered on YouTube in Student’s Quest.
Free printables and practice sheets
Ready-to-use worksheets and chapter-wise JEE Main questions, free to download and print.
Live online classes
Small batches for Class XI, Class XII and JEE. Slow, solid concept building — we learn why, then how. Notes and assignments after every class.
Kind words from the community
From students, parents and fellow teachers who watch and learn with Stay Mathactive.
“Most of the teachers teach to solve questions but you teach us how to think. I was lucky to have you as my math staff.”
@KaushikManikandan-w5c · now at IIT Bombay
“Thank you for teaching us the art of systematic thinking and showing us how to trace connections between ideas across different fields.”
@AshwinSathishkumar-q2p · YouTube
“Your videos are mathematically beautiful and AI can’t bring this depth.”
@Pkguptaji · YouTube
What is Mathemission?
I’m Ashutosh Kumar, a senior secondary maths teacher — JEE, CBSE, IB Diploma and AP Calculus. Making maths simple, without losing its depth, is my obsession. This site collects what I’ve learned teaching it.