Worked and checked
Math and science
Every number computed, every figure drawn from the equations.
MathematicsPhysicsChemistryAstronomyStatistics
For schools, colleges, tutors and families
Lemma drafts.
Proof checks.
You get the math right.
Bring your notes, books and old papers in math, science, engineering or computing. srijanta turns them into lessons, worksheets and tests where every number is worked, every figure is drawn from the math, and every answer is checked before a student sees it.
Move the point on the curve. The steps below follow it.
Compass · live figure
Tangent to y = x2 at x =
Point
Slope
Tangent
How it works
A language model writes the draft. Our engines do the maths.
Plenty of AI tools can write a page that sounds right. srijanta does not let a sentence stand in for a calculation. Each step below is the same problem as the figure above, worked live.
1
Lemma drafts
Reads the question and plans the method, the way a teacher would.
2
Theorem works it
Exact arithmetic. Fractions stay fractions.
3
Proof checks
Tests the answer against the question itself.
4
You get it right
Look over anything new once. After that, every fresh set of numbers is checked on its own.
New lesson, not yet reviewed
The engines
Built to be exact, from the first line of code.
The engines are our own work, written to give the right answer every time and to show how they got it. Where a task calls for language, we use the strongest language models available and change them as better ones arrive. They draft; the engines decide.
⊢
Lemmadrafts
Drafts like a good teacher
Reads your notes, scans and PDFs, then writes lessons, steps and questions in plain language. It plans the work and never has the final say.
Try: paste a problem and watch the draft appear
∫
Theoremcalculates
Maths that is worked, not guessed
Algebra to calculus, statistics and beyond. Answers stay exact, and every step can be shown.
Try: change a number and see every step follow
∠
Compassdraws
Figures drawn from the maths
Graphs, geometry, 3D and animation made from the equations themselves, so they are correct and they move.
Try: drag a point and the figure keeps its rules
∴
Logicreasons
Every step, and the reason for it
Each step of a solution names the rule it uses, a law, a substitution, a piece of algebra, and the steps it rests on. It also handles logic itself: sets, truth tables and proofs.
Try: tap a step to see what it was built from
☉
Orbittracks the sky
Astronomy, computed
Where the sun, moon and planets are at any moment, worked from the motions themselves and drawn to scale.
Try: pick a date and see the sky
p⃗
Momentumsimulates
Physics you can run
Motion, forces, projectiles and electric fields, simulated from the laws rather than sketched.
Try: launch a ball and change the angle
⇌
Valencebalances
Chemistry that adds up
Molecules, reactions and quantities, with every equation balanced.
Try: type a reaction and see it balanced
{ }
ApasScriptpublishes
Write once, use everywhere
The language our lessons are written in. One file becomes a web page, a printable PDF, slides and a test.
Try: one lesson shown three ways
∎
Proofchecks
Nothing leaves unchecked
Every answer key is worked by the engines. Every student answer is marked with the same maths, and each student can get fresh numbers.
Try: answer wrong on purpose and see why
⟶
Relaydelivers
Big jobs, done in order
Takes a whole course through every step, shows the cost before it starts, and picks up where it stopped.
For schools converting a full course
Lemma drafts. Theorem calculates. Logic reasons. Compass draws. Momentum simulates. Valence balances. Orbit tracks the sky. ApasScript publishes. Proof checks. Relay delivers.
Subjects
If the answer can be worked out, srijanta works it out.
Questions are written as templates in ApasScript, so any subject whose answers are calculations or figures is computed and checked the same way as algebra. No special library is needed for each new topic.
Worked and checked
Engineering and computing
Circuits to algorithms to models, with the working shown.
Electrical engineeringComputer scienceMachine learningEngineering math
Your content, delivered
Every other subject
Lessons, tests and classes for subjects without calculations. You review the first version; we don't call it checked.
LanguagesHistorySocial studiesBiology
The platform
Make it, keep it, teach with it.
After you sign in, everything is in one place. Studio is where new material is made; the rest is where it lives and reaches students.
Studio
Make something to teach with
- ConvertA chapter, notes or a scan becomes an editable lesson. Figures are redrawn exactly and questions are found and solved.
- WriteAsk for a lesson, a worked solution or a question set.
- SpeakTalk through a topic and get a written page.
- WorksheetYour questions and ours, fresh numbers for each student, answer keys, ready to print.
- SlidesBuild a deck, or turn a PDF into one you can edit.
- QuestionsEvery question in a document, solved and turned into a template.
Library
Everything you have made and uploaded, searchable, ready to reuse.
Classroom
Your classes and courses. Institutions run it on their own domain, under their own brand.
Tests
Timed tests from your questions, marked with the same math.
Tutor
Help for students, with its working checked.
Write once, always live
One lesson. Every format. Always the latest.
A lesson is written once. The slides, the web page, the phone view and the printed sheet are all made from that one source, so an edit shows up everywhere the moment you make it. No files to send again, no old copies in circulation.
The source
Edit the title or move the point. The figure at the top of the page is driven by the same source.
Live in 4 places
At the slope is , so the tangent is
Check my answer
1. Find the tangent to y = x2 at x = .
Key:
- Edit onceFix a typo or change a number in the source, and every format follows.
- Always currentStudents, teachers and partner sites always open the latest version.
- EverywhereOn a laptop, a phone, a classroom screen, inside your LMS, or on paper.
- Still exactEach new number is worked and checked again before anyone sees it.
Who it's for
From one tutor to a whole district, and the companies that teach too.
Schools and districts
Your own material, made exact
Turn the papers and notes your teachers already trust into interactive courses on your own website and brand, with tests that mark themselves correctly. Your students see your school, not ours.
ConvertLibraryClassroomWhite label
Colleges and universities
Courses in every department
Engineering, science and computing courses with problem sets that give each student new numbers and mark the answers exactly.
StudioQuestionsTestsYour LMS
Tutors and learning centres
Worksheets in minutes
Build sets from your own questions, give each student different numbers, and print or share them with answer keys you never have to check by hand.
WorksheetQuestionsClassroom
Parents and students
Practice that explains itself
Every answer comes with the working. A tutor is there when you are stuck, and its steps are checked like everything else.
TutorWorksheetTests
Publishers and edtech
Checked content at scale
Turn a backlist into interactive books and question banks with verified keys, under your brand or through our API.
ConvertQuestionsLibraryWhite label
Technical training
Training where the numbers matter
For engineering, energy, electrical and IT teams: manuals become modules, quizzes and simulations, with every calculation worked.
ConvertStudioTestsRelay
Partners
Their name on the door. Our engines behind it.
Large schools, coaching institutes, colleges and universities use srijanta as a white-label service. Their students sign in on the institution's own website and see only its brand. We build, convert and check; they teach.
Your institution
Partner names appear here with each partner's written permission.
Your domainlearn.yourschool.edu, with your logo and colours
Your contentconverted and checked by our engines, kept in your library
Your choiceshow "Powered by srijanta", or nothing at all
Agents for organisations
Agents that read your documents and keep the numbers right.
For large organisations we set up agents on your own documents: PDFs, scans, photos and handwritten pages. Lemma does the reading and writing, the engines work every figure, and Proof checks the results before your people use them.
NotesTurns PDFs, photos and handwritten pages into clean, editable notes and summaries in minutes.
ReconcileMatches statements, invoices and ledgers, re-adds every total, and lists each mismatch for a person to look at.
Policy answersAnswers staff questions from your own rules and manuals, and cites the page or section it used.
ReportsDrafts recurring reports whose numbers come from your data and are checked before they go out.
TrainingTurns manuals and procedures into modules, quizzes and tests for your staff.
Where your people use them
In your own studioA private workspace on your domain, such as studio.yourcompany.com, with your sign-in and your brand.
On your website or intranetAn assistant panel added to the pages your staff already use.
Inside your systemsYour software sends documents and receives the results through our API.
Each organisation's documents are kept apart from everyone else's, and every action is logged. Running the agents on your own servers can be discussed for large contracts.
Pricing
Start on your own. Grow into a school.
A single teacher is an organisation of one, so every plan is the same product with more room.
Free
Parents and students
$0
- The engines in your browser
- 3 worksheets a month
- Practice with worked answers
Individual
A tutor, a teacher, a parent
$9 a month, or $79 a year
- Studio, Library and Classroom
- Tutor and Convert with credit
- Your own students
Team
Learning centres, departments
$15 a teacher a month
- A shared library
- Roles and review
- One bill
Partner
Schools, coaching institutes, colleges, universities
By quote
- White label: your domain, your brand
- Opens inside your current LMS
- Approval roles, audit, invoices
See your own material, made exact.
Send us a chapter or a question paper. In a 30-minute call we show it back to you as a lesson, a worksheet and a test.