Experiments

Try it before it is finished.

Experiments are early ideas put online to see how they hold up. They can change a lot, and not all of them stay. Four are open right now: live quizzes for a whole class, an app for reading well logs, a drawing game that guesses as you sketch, and a lab for HYROX race results.

01 · The Platform

Quiz the whole class, live.

Live classroom quizzes on top of a real curriculum. Every question is tied to its grade, subject, chapter and learning outcome, so a quick game also shows what the class has learned.

  • Ready for testing
  • Classrooms
  • Curriculum question bank

How a game goes.

  1. HostPick questions by chapter, section or outcome. The big screen shows a PIN and a QR code to join.
  2. PlayStudents answer on their own phones. Faster right answers score more, and nobody needs an account.
  3. RevealEach answer is shown with how the class voted and a short explanation.
  4. LearnA report by student, question and learning outcome, and Insights across every game.

Ready for testing by anyone with a UAE Ministry of Education email address (moe.gov.ae or moe.sch.ae). Not on the MOE network? Email us to request access. Students join with a PIN and stay anonymous.

Open The Platform
  • The answer revealed on the big screen, with how many students chose each option and a short explanation
    The reveal How the class voted, and why the right answer is right.
  • The podium after a game: Purple Shark 2 first, Orange Tiger 4 second and Gold Eagle 3 third, each with their points and four out of four correct
    The podium The top three, with buttons for the full report or another round.
  • The Insights page, titled Where students struggle: filters by grade, subject, school and class, and key findings for each learning outcome, built from example data
    Insights The outcomes and questions a class finds hardest, across every game.

02 · Stratum

Well logs, read properly.

A well log analysis app for oil and gas data. Load LAS or DLIS files, plot them, clean them up, run the petrophysics and write the report, all in one project.

What it does.

  • In testing
  • Windows
  • macOS
  • Hosted for teams
Plot
Every curve on one depth scale, with image tracks for VDL and waveforms.
Clean up
Depth shift, smooth, fill gaps or rescale a curve, with undo.
Interpret
Petrophysics for open hole, and cement bond, saturation and flow for cased hole.
Report
Pick the sections, then export it as a web page or a PDF.
  • A density and neutron crossplot coloured by gamma ray, with sandstone, limestone and dolomite lines
    Crossplot Density against neutron, coloured by gamma ray, to set the parameters.
  • A gamma ray histogram of well 15/9-13 with a cumulative curve, the clean and clay endpoints marked, and a table of statistics
    Histogram Pick the clean and clay gamma ray endpoints, then apply them in one click.
  • A cased hole log plot: gamma ray and casing collars, cement bond amplitude and transit time, and the VDL waveform image
    Cased hole Cement bond and the VDL image side by side, with gamma ray for depth.

Built and tested on FORCE 2020, a public set of 118 wells from the Norwegian North Sea. Password protected while it is being tested: request access and we will reply by email.

Open Stratum What Stratum does

03 · Draw AI

Draw something. It will guess.

Sketch anything, and a model trained on 95 categories of drawings tries to name it while you are still drawing.

  • Live
  • Machine learning
  • 95 categories

How it plays.

Draw
Sketch on the canvas, and set the brush size to suit.
Guesses
The model reads your sketch as you go and shows its best guesses.
95 categories
A sketch classifier trained on 95 categories of drawings.
Game mode
Clear the canvas to start over, or switch to game mode for a challenge.
Open Draw AI (opens in a new tab)

04 · Split Lab

Every HYROX split, laid out.

We cleaned the published results of ten HYROX races from 2026, 69,515 finishes in all, so anyone can see where a time really ranks.

  • Live
  • 10 races
  • 12 divisions

What it does.

Open Split Lab

An unofficial fan project, not connected with HYROX. Splits were published for about the top 100 in each category at each race, so beyond that Split Lab estimates them; finish times cover everyone.

Percentile
Type a station, run or finish time and see where it ranks in your category, age group and race.
Race analyzer
Enter your whole race and see your percentile on every part, where you lose time and how you paced.
Goal planner
Pick a target finish and get the splits that athletes at that time usually run.
Races and divisions
See where one finish time would rank at each race, and what it equals in other divisions.

What comes next

More experiments are on the way.

Leave your email and you will get one message when the next one goes live. Got an idea for one? Tell us.

Get one email

Stratum · In testing

Stratum needs a password.

While it is being tested, Stratum is open only to people we have given a password. No password yet? Request access and we will reply by email, usually within a couple of days.

Tell us your name, your company or university, and the kind of logs you work with.

Request access I have a password (opens Stratum in a new tab)

Email not opening? Write to hello@cs42.org

What Stratum does