The CS classroom, rebuilt for the AI era.
Host live algorithm quizzes, let students code in the room, and debrief the exact concepts that need attention.
Room code
A short code gets the room together.
The full join screen remains in the product flow, but it is no longer the first marketing beat.
Piloted in a Bryn Mawr College CS classroom. Free for educators during the pilot.
Join at algoarena.net/classroom
or enter code
CS2026
Game Settings
Questions
6
Time
10s to 20m per question
Topics: arrays, linked lists, strings
Players
2 joinedYou are the host
Classroom
Classroom
Host or join live sessions: games, assessments, and collaborative practice.
Enter code
CS2026
How Classroom Mode works →
Student screen
Students join the same loop, then solve in the real IDE.
Maya joins with the classroom code, answers live checks, opens the full AlgoArena coding surface, and gets Rena as a teacher-controlled hints-only rail.
Join card
Students can still join from the dashboard.
The join card is part of the real flow; the landing demo keeps it as context, not the headline.
Classroom pilot
Piloted in a Bryn Mawr College CS classroom.
Classroom is shaped around an instructor's real loop: start class quickly, see who is stuck, and leave with a useful debrief.
Live teaching loop
One classroom surface from question to debrief.
The product should not ask instructors to decode a pile of widgets. It should make the current class state obvious.
17s
What is the main advantage of a linked list over an array?
What is the main advantage of a linked list over an array?
Waiting for answers...
Host in seconds
Start from a quiz, share a short join code, and keep every student on the same question.
Coach without giving answers
Hint-only Rena appears on coding questions as an attached rail, with teacher-controlled guardrails.
Debrief while it matters
Use submissions, pass rates, and concept gaps to choose the next explanation before class moves on.
Instructor control
Rena belongs beside the coding surface, not floating off as a toy.
Students can ask for help while they code, but the teacher decides where Rena appears and how much it can say.
Hint-only Rena
Students get conceptual hints — never code snippets or full solutions.
Where Rena appears
Tap to preview →Hints only
No full code
Teacher transcript
After class
Make the next lesson easier to choose.
Classroom works best when live sessions turn into reusable material and a clear review surface, not a one-off game.
Concept coverage
DP is the next office-hours focus.
Who needs help
21
active
78%
on pace
1,420
980
760
1,110
Count Set Bits
Easy
Shortest Safe Path
Medium
Warehouse Intervals
Hard
Frequently asked
With a short join code on any device - no install, no full account required. They answer from their own screen while you watch progress live.
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The page is now organized around the real instructor loop: host, coach, debrief, and reuse.