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Classroom Sims
Free for every teacher, everywhere

Did your class understand today’s lesson?

Pick a topic. Share a six-digit code. In three minutes you see who understood, who didn’t — and exactly which idea is in the way.

For students
Join your class

Your teacher wrote a code on the board. No app, no login, no name.

Practice on my own
For teachers
Check the room

497 NCERT topics, ready. Or write your own in thirty seconds.

01 New quiz from NCERT Pick a chapter, get a code → 02 Create on any topic Type a topic, AI writes the questions → 03 Coaching audit Five MCQs + one explanation, four verdicts →
The difference

“Class average: 58%” is not actionable. This is.

Every wrong answer maps to a named misconception. You don’t get a score to file away — you get a sentence you can teach against tomorrow morning.

See a live class →
Class 6 · Fractions · 30 answered
Bigger denominator means bigger fraction 12 students
Can only compare with common denominator 7 students
Numerator and denominator swapped 4 students
Understood — reasoned about piece size 7 students

Pick your class

497 topics · NCERT 1–12 · 6 languages
1 Math, EVS, English 2 Math, EVS, English 3 Math, EVS, English 4 Math, EVS, Science 5 Math, EVS, Science 6 Math, Science, History, Geography, Civics 7 Math, Science, History, Geography, Civics 8 Math, Science, History, Geography, Civics 9 Math, Science, Economics, History, Civics 10 Math, Science, Economics, History, Civics 11 Physics, Chemistry, Biology, Math, Business, Accounts 12 Physics, Chemistry, Biology, Math, Business, Accounts
01
Pick a topic
Choose from 497 NCERT chapters or type any topic to generate a quiz in thirty seconds.
02
Share the code
Write a six-digit code on the blackboard. Students join on any phone — no app, no login.
03
See who understood
Every wrong answer maps to a named misconception. You see the pattern before the period ends.
04
Act tomorrow
A concrete reteach suggestion — naming a physical object and an action — is ready before you leave.
2G
Total transfer under 400KB. Loads in about two seconds on a cheap Android phone over 2G.
No names
Students are seat numbers. No account, no email, no phone number — ever.
6 languages
English, Hindi, Tamil, Telugu, Bengali, Marathi. Questions and misconceptions, not just the shell.
Free
No freemium. No trial. No catch. Free for every teacher, everywhere.
For districts
Start a 12-week pilot
One block, zero cost, misconception-level data that has never existed at system level. →
For schools
Register your school
Get a school code, track understanding across classrooms, benchmark against your district. →
For principals
School dashboard
Understanding by subject and grade, repeating misconceptions, suggested interventions. →
For funders
Impact & partnership
Sourced evidence, the structural argument, and four concrete asks. →