Conditional probability
Translate “given that” correctly, distinguish independence from mutual exclusivity, and work through an exact examination-style example.
Read the H1 guideIntegrand by DC Math · Built for Singapore A-Level Mathematics
NEW Give 5 AI credits. Earn 10 when a friend joins. ↓
Understand the maths.
Own the method.
An AI mathematics app catered specially to Singapore A-Level Math syllabuses for both students and teachers—H1, H2, Further Mathematics and H3. It reads students’ working, gives useful guidance, and equips teachers with tools for assignments, marking and learning insights.
H1 MathematicsH2 MathematicsFurther MathematicsH3 Mathematics
01 — THE APPROACH
Guidance that leaves the thinking to you.
Integrand starts from your attempt. It can interpret typed questions, handwritten working and uploaded material—then respond at the right level, from a small nudge to a complete explanation.
A-LEVEL MATHS GUIDES & STRATEGIES
Understand the idea before memorising the method.
Clear explanations, examination strategies and worked examples catered specially to Singapore A-Level Mathematics syllabuses.
Vectors
Connect lines, planes, normals and projections through a visual explanation, an exact worked example and common misconceptions.
Read the H2 guideMatrices & eigenvalues
Move from the characteristic equation to eigendirections and explain the geometric action of a linear transformation.
Read the Further Math guideInequalities
Choose between AM–GM and Cauchy–Schwarz, preserve the required conditions and identify when equality holds.
Read the H3 guideMore syllabus guides are being prepared.
Each guide is checked for syllabus relevance and mathematical accuracy before it is published. Explore the available guide now, or use Integrand for support with your current topic.
One growing A-Level library. New guides will be organised by syllabus and topic, so every explanation stays relevant to the course being studied or taught.
A more natural workspace for tutoring, handwriting and marking.
The newest release makes Integrand more collaborative for teachers and students, while improving the tablet-and-stylus experience throughout the app.
INDIVIDUAL TUTORING
Teacher and student, in one shared conversation.
An approved teacher can request a student by email. The student must approve access before the teacher can read or join their conversation history, and can remove that access later.
TABLET CANVAS
Handwriting that behaves more like paper.
Draw-and-hold straight lines, adjustable erasers, scribble-to-delete, and lasso selection for copying, moving or deleting handwritten work.
MEDIA & PDF TOOLS
Work directly on the material you already have.
Add photos or PDF pages to the canvas, then move, resize, crop or delete them. Marked PDFs support ticks, crosses, circles, highlights, underlines and arrows.
VIDEO LESSONS
Choose the lesson that fits the moment.
Select the mathematics mode, then generate a quick explanation, a full lesson, or a concept-first walkthrough.
FASTER WORKFLOWS
Less waiting between your tools.
Conversation history, Timed Test, Mark My PDF and Help Me Mark now open more efficiently, with smoother scrolling across canvas and marked-work screens.
ASSESSMENT INSIGHTS
See where the class—and each student—needs help next.
Help Me Mark now turns saved results into question-by-question statistics, topic performance and individual weak-topic insights. Export a complete CSV marksheet with every student’s question scores, total, percentage and review link.
REFER & EARN
Good mathematics help is worth sharing.
Invite a new student, teacher or tutor to Integrand. Your friend receives 5 bonus AI credits in addition to the normal starter credits, and you receive 10 AI credits after their valid referral claim.
One referral per new account, claimed during the first 7 days. Self-referrals and duplicate claims are blocked. Up to 20 rewarded referrals per inviter.NEW USER+5bonus AI credits
YOU+10AI credits earned
One workspace for learning, practising and checking your mathematics.
Move from a quick question to a full timed paper without changing tools. Integrand keeps the mathematics readable and the next step clear.
Ask with text, handwriting or a PDF
Type mathematics naturally, attach a question, or write directly on the multi-page canvas.
Build chapter-based timed tests
Choose the syllabus, chapters, marks and exam pace, then complete the generated paper under a live timer.
Mark complete written work
Upload an answer script with an optional question paper and mark scheme for annotated, mark-focused feedback.
Find and revisit weak topics
Use Concept Checks, mistake history, similar questions and targeted practice to turn errors into a revision plan.
Keep your own notes and corrections
Save useful explanations, marked corrections and handwritten notes into your connected Google Drive.
Shape a flexible working canvas
Import photos and PDF pages, reposition or crop them, and edit handwritten strokes with tablet-friendly selection and eraser controls.
Prepare, assign and review work without losing sight of the student.
Teacher Workspace brings batch marking, assignments, question resources and class results into the same mathematics-focused interface.
Batch-mark student scripts
Upload the assessment materials once, then review multiple answer PDFs and save marked copies to your Google Drive.
Create fixed student activities
Assign a Concept Check or Timed Test through Google Classroom or a controlled share link.
Turn assessment results into next steps
Compare performance by question and topic, identify each student’s weak areas, and export a CSV with question scores, totals, percentages and student review links.
Build a reusable question bank
Create questions, import from PDFs, review drafts and share copies with approved teachers.
Keep source documents in your Drive
Assessment PDFs and saved marked work use the teacher’s connected Google Drive storage.
Tutor inside the student’s conversation
Request access by email, then join the same saved conversation after the student approves. Teacher, student and AI messages stay clearly labelled.
Tools built around real mathematics work.
FROM PAPER TO FEEDBACK
Upload the working you already have.
Mark My PDF accepts a completed answer script and can use the original question paper and official marking scheme for more reliable marking. Feedback stays connected to the pages where the work was done.
Try Mark My PDF
Supported notes and teacher assessment files stay in the connected Google Drive account.
AI actions use transparent credit amounts; saving and organising your own work does not consume credits.
Switch between General, H1, H2, Further Mathematics and H3 modes as your work requires.
Start free. Pay only for the AI you use.
Every eligible account begins with 20 one-time starter credits. Credits never expire, and the app shows the cost before you begin a larger AI task.
Explore before topping up.
Ask questions and try the learning tools with the starter balance included with your account.
Clear prices before each task.
- Concept Check
- 3 credits
- Video lesson
- 5 credits
- Timed Test
- 6 generate + 6 mark
- PDF marking
- 10 per script
Your everyday workspace stays free.
Saving, printing, organising notes, replaying a generated lesson and reviewing completed work do not use additional AI credits.
WEB CREDIT PACKS · SGDTop up only when you need to.Buy securely from inside Integrand.
100creditsS$9.99
300creditsS$27.99
BEST VALUE1000creditsS$89.99
Web prices are shown in Singapore dollars. App-store pricing may vary by platform. Referral bonuses can add more credits to eligible accounts.
Know what to expect before you begin.
Short answers about syllabuses, credits, marking, storage and installing Integrand.
Which Singapore A-Level Mathematics syllabuses are supported?
Integrand supports H1 Mathematics, H2 Mathematics, Further Mathematics and H3 Mathematics modes. The public learning-guide library is growing progressively, so not every syllabus has a published guide yet.
Can I try Integrand before buying credits?
Yes. A new eligible account starts with 20 AI credits. You can explore the workspace and see the credit cost of an AI task before using it.
What uses AI credits?
AI-generated tutoring, tests, concept checks, video lessons and marking use credits. The amount depends on the task and is shown in the app. Saving, organising and printing your own work do not use AI credits.
Can teachers use and correct AI-generated marking?
Yes. Approved teachers can batch-mark scripts, annotate with a stylus, adjust marks and add feedback. AI marking is an assistive first pass; the teacher remains in control of the final review.
Where are uploaded documents and saved work stored?
Supported uploads and saved work use the connected user’s Google Drive where the feature allows it. Integrand retains the service records needed to operate accounts, conversations and credits, as explained in the Privacy Policy.
Can I install Integrand on an iPhone, iPad or Android device?
Yes. Use the Install Integrand button for device-specific instructions. On iPhone and iPad, add it through Safari’s Share menu; supported Android browsers can install it from the browser prompt or menu.
Make Integrand part of your mathematics workflow.
Open it in your browser or add it to your Home Screen for one-tap access.
