Formula quick reference

How to use a formula sheet properly

A formula sheet is not a reading list — it is a recall checklist. Reading formulas feels productive and stores almost nothing; writing them from memory is what makes them available in the exam. The routine that works:

1. Pick one chapter's sheet. Read it once.
2. Turn it over (or close the tab) and write every formula you can from memory.
3. Check. Circle the misses. Tomorrow, redo only the circled ones.

Five days of this cycle clears most of a chapter. The full method — including how to derive formulas so you can rebuild them mid-exam — is in the formula memory guide.

What is inside each subject sheet

• Maths: algebraic identities, trigonometry ratios and identities, coordinate geometry (distance, section, slopes), circles and tangent theorems, mensuration (surface areas and volumes), statistics (mean, median, mode) and probability.
• Physics: motion equations, force and momentum relations, work–energy–power, gravitation, electricity (Ohm's law, series/parallel resistance, heating effect), magnetic effects, and optics (mirror, lens, refractive index).
• Chemistry: mole concept and molar mass, percentage composition, concentration terms, gas laws, pH scale, and periodic trends.

Board exams attach marks to each of these individually — a numerical without the formula line, substitution and unit loses partial marks even when the final number is right. Write all three lines.

Pair the sheet with testing

Formula recall decays on a schedule; beat it with spaced tests. After your daily sheet-recall, send quiz on WhatsApp for chapter questions, or attempt a quick quiz here. The bot tracks which topics keep failing and resurfaces them — that mistake file is your highest-value revision material before the exam.

Missing a formula that should be here? Ask the bot directly on WhatsApp — it explains any formula at your class level, with a worked example.