Free maths practice for primary school children, at studyzone.co.in.
No accounts, no subscription, no ads, and nothing about a child is stored on any server. Built and maintained by one parent, and free for everyone.
StudyZone generates unlimited Class 4 maths questions across 22 topics and three difficulty levels, aligned to CBSE, ICSE and IGCSE Cambridge Primary Stage 4. Questions are produced by rule-based generators rather than drawn from a fixed bank, so a child never runs out and never sees the same paper twice.
- 22 topics — addition through to fractions, geometry, data handling and multi-step word problems
- Three difficulty levels with per-question working shown after each attempt
- Printable worksheets (5–20 questions) with a separate teacher answer key
- Mock exam generator with competency-weighted mark distribution
- Reasoning questions that ask a child to explain or correct an answer rather than compute one
- Inline SVG diagrams for tally charts, bar graphs, shapes, angles and number lines
- Works offline as an installable PWA; full dark mode; no login anywhere
The question generators are the interesting part, and they are reusable. If you are building anything that needs curriculum-aligned primary maths questions — a school tool, a tutoring app, a research project — lib/questionGenerator.ts is a self-contained, dependency-free place to start.
The rest of the repository is a working example of a genuinely privacy-preserving children's web app: no analytics on the child, no session storage on a server, no consent banner needed because there is nothing to consent to.
StudyZone is used by nine- and ten-year-olds, so the architecture starts from the assumption that no child data should exist. There is no database of students, no login, and no server-side record of what any child answered. Quiz state lives in React state in the browser and is gone when the tab closes. Site analytics are cookieless and aggregate-only. The one piece of persistent storage is a single integer — a visitor counter. The full policy is at studyzone.co.in/privacy.
Next.js 14 (App Router) · React 18 · TypeScript · Tailwind CSS · deployed on Vercel
Question generation runs server-side in API routes; PDF generation (jspdf) runs entirely in the browser, so worksheets cost nothing to produce and never round-trip a child's work.
git clone https://github.com/hkarekar403/studyzone.git
cd studyzone
npm install
npm run devOpen http://localhost:3000. No environment variables are required — the visitor counter and the feedback form both degrade gracefully when their services are not configured.
Optional, for full functionality:
| Variable | Purpose | Without it |
|---|---|---|
KV_REST_API_URL / KV_REST_API_TOKEN |
Upstash Redis, visitor counter | Counter shows 0 |
RESEND_API_KEY |
Feedback form email delivery | Form succeeds silently, sends nothing |
app/
page.tsx the quiz (client-side; session state lives here)
[classLevel]/topics/ per-topic landing pages, statically generated
teachers/ worksheets and lesson plans for educators
api/ question generation, answer checking, worksheets
lib/
questionGenerator.ts the Class 4 generators
topicConfigs.ts topic + class registry, drives routes and sitemap
schemaGenerator.ts structured data for topic pages
generators/ Class 8 generators (library only — see below)
Live and in beta. Class 4 is complete across all three curricula.
Class 8 generators exist in lib/generators/class8.ts and work, but are not wired to a page — they use a different, typed answer contract from the Class 4 generators, and unifying the two is prerequisite work for the Class 5–8 expansion.
Corrections to the maths are the most valuable contribution by a distance. If you find a question that is wrong, ambiguous, or badly worded for a nine-year-old, please open an issue with the exact question text — that is a bug, and it gets fixed first.
Teachers: if a topic's difficulty is pitched wrong for your board, please say so. That feedback is hard to get and hard to guess.
StudyZone is a practice tool, not an assessment platform. Questions are randomly generated and are not a substitute for formal evaluation. It is not affiliated with, endorsed by, or approved by CBSE, CISCE, Cambridge Assessment International Education, or any examination board — curriculum names describe question style only.
MIT — see LICENSE.