Find Tutor
IB · IGCSE · A-Level · Lower Secondary

The visual way
to learn.

921 interactive lessons across Physics, Chemistry, Biology and Mathematics — every one built around a visual, a live simulation, and real exam practice. From Lower Secondary foundations to the full IB Diploma.

Sign inHow it works
ConceptSmaller atom, stronger pull3 / 8
+Cl+Br+IAtomic radius increases ↓

Cl: only 3 shells — strong pull on incoming electron.

Br: 4 shells — moderate attraction.

I: 5 shells — weak pull, least reactive.

15

subjects

374

topics

921

lessons

538+

hours of content

The library

15 subjects. One standard of craft.

Every lesson follows the same proven arc — hook, visual explanation, interactive practice, exam-style test. Open any topic in any programme and you'll find the same careful work underneath.

IB

International Baccalaureate

Full IB Diploma Programme — all standard and higher level subjects

All IB subjects
IB Physics

Physics

From quantum mechanics to cosmology — build deep intuition for how the universe works through simulation, derivation, and exam practice.

24 topics73 lessons
Open
IB Chemistry

Chemistry

From atomic structure to organic mechanisms — build deep understanding of matter and its transformations through models, particle diagrams, and exam practice.

22 topics81 lessons
Open
IB Maths AA

Mathematics: Analysis and Approaches

Pure-mathematical core of the IB Diploma — calculus, algebra, functions, vectors, statistics, complex numbers, induction, and series. SL + HL paths share lessons; HL extension topics are flagged with a violet badge.

25 topics77 lessons
Open
IB Maths AI

Mathematics: Applications and Interpretation

Modelling, statistics, and applied mathematics for the IB Diploma — financial maths, regression, probability, distributions, calculus in context, Voronoi diagrams, and (HL) graph theory, vectors, matrices, and differential equations. Both papers GDC-required.

10 topics71 lessons
Open
IB Biology

Biology

Life from molecule to ecosystem — four themes (unity & diversity, form & function, interaction & interdependence, continuity & change) and the experimental craft of biology. SL + HL paths share lessons; HL-extension topics are flagged with a violet badge.

40 topics113 lessons
Open
A2

A-Level

Edexcel International A-Level qualifications — Physics (YPH11), Chemistry (YCH11), Biology (YBI11) and Mathematics (YMA01) live, more subjects coming

All A2 subjects
YPH11 / XPH11

Physics (Edexcel)

Edexcel International Advanced Subsidiary (IAS) and Advanced Level (IAL) Physics — Units 1-6 spanning mechanics, materials, waves, electricity, fields, thermodynamics, radiation, oscillations and cosmology, with practical skills.

13 topics39 lessons
Open
YCH11 / XCH11

Chemistry (Edexcel)

Edexcel International Advanced Subsidiary (IAS) and Advanced Level (IAL) Chemistry — Units 1-6 spanning structure, bonding, organic chemistry, energetics, group chemistry, kinetics, equilibria, redox, transition metals, and analytical methods, with practical skills.

22 topics71 lessons
Open
YBI11 / XBI11

Biology (Edexcel)

Edexcel International Advanced Subsidiary (IAS) and Advanced Level (IAL) Biology — Units 1-6 spanning biological molecules, transport and health, cells and development, biodiversity, energy flow, microbiology, immunity, respiration, the internal environment, coordination, and gene technology, with practical skills assessed in Units 3 and 6.

10 topics74 lessons
Open
YMA01 / XMA01

Mathematics (Edexcel)

Edexcel International Advanced Subsidiary (IAS) and Advanced Level (IAL) Mathematics — 11 modules: Pure Mathematics P1–P4, Mechanics M1–M3, Statistics S1–S3 and Decision Mathematics D1. Covers algebra, coordinate geometry, trigonometry, calculus, vectors, mechanics, statistics, probability distributions, hypothesis testing and discrete optimisation algorithms.

67 topics106 lessons
Open
IGCSE

Cambridge IGCSE

Cambridge IGCSE Biology (0610), Chemistry (0620), Mathematics (0580) and Physics (0625) — master core sciences and mathematics

All IGCSE subjects
IGCSE Mathematics 0580

Mathematics

Cambridge IGCSE Mathematics (0580) — master number, algebra, geometry, trigonometry and statistics with interactive visual lessons and exam practice.

10 topics21 lessons
Open
IGCSE Biology 0610

Biology

Cambridge IGCSE Biology (0610) — master cells, organisation, transport, biological molecules, enzymes, plant and human nutrition, transport, gas exchange, respiration, excretion, coordination, reproduction, inheritance, variation, ecology and biotechnology with interactive visual lessons.

48 topics50 lessons
Open
IGCSE Chemistry 0620

Chemistry

Cambridge IGCSE Chemistry (0620) — master atomic structure, bonding, reactions, organic chemistry and more with interactive visual lessons and exam practice.

14 topics28 lessons
Open
IGCSE Physics 0625

Physics

Cambridge IGCSE Physics (0625) — master motion, forces, energy, thermal physics, waves, electricity, magnetism, nuclear and space physics with interactive visual lessons and exam practice.

24 topics45 lessons
Open
CLS

Cambridge Lower Secondary

Cambridge Lower Secondary Mathematics Stage 8 and Science 0893 (Stages 7–9)

All CLS subjects
CLS Mathematics 0862

Mathematics

Cambridge Lower Secondary Mathematics Stage 8 — build confidence with numbers, algebra, geometry and data through interactive visual lessons.

9 topics18 lessons
Open
CLS Science 0893

Science

Cambridge Lower Secondary Science Stages 7–9 — build foundations in Biology, Chemistry, Physics and Earth & Space through interactive visual lessons, preparing learners for Cambridge Lower Secondary Checkpoint.

36 topics54 lessons
Open
01

Visual first

Every concept opens with a moving picture — a simulation you can poke, a diagram that builds itself step by step. Students see the idea before they read a word about it.

02

Exam-shaped

Lessons are built backwards from real mark schemes. Every concept ends with exam-style questions and a wrong-vs-right comparison, so practice always looks like the paper.

03

Tutor-ready

Draw on any slide, flip to a whiteboard, turn a phone into a drawing pad, or export the lesson as a PDF. Built for live one-to-one sessions, not just self-study.

Open a lesson. See the difference.

One sign-in unlocks the whole library — 15 subjects, 921 lessons, 538+ hours of interactive teaching material.

Sign in