IGCSE

GCSE Biology - How the Eye Works (Part 1) - Structure of the Eye & Iris Reflex by Cognito 696,236 views 6 years ago 5 minutes, 9 seconds

Electrolysis Part 1/3 - Basics and Molten Compounds (2027/28 Exams) by Cognito 523,218 views 1 year ago 4 minutes, 20 seconds

GCSE Physics - Longitudinal & Transverse Waves - Labelling & Calculating Wave Speed (2027/28 exams) by Cognito 254,165 views 1 year ago 6 minutes, 40 seconds

GCSE Physics - How Moments Work - Spanners and Seesaws by Cognito 494,171 views 6 years ago 5 minutes, 41 seconds

GCSE Biology - What are Enzymes? (2026/27 exams) by Cognito 702,997 views 4 years ago 4 minutes, 55 seconds

GCSE Physics - How Transformers Work (2026/27 exams) by Cognito 615,595 views 6 years ago 4 minutes, 20 seconds

Kingdoms of Life - Animals, Plants, Fungi, Protoctists, Bacteria and Viruses by Cognito 1,556,255 views 5 years ago 9 minutes, 43 seconds

GCSE Physics - Generator Effect / Electromagnetic Induction (2026/27 exams) by Cognito 694,350 views 6 years ago 4 minutes, 59 seconds

GCSE Biology - Cell Types and Cell Structure (2026/27 exams) by Cognito 1,777,299 views 5 years ago 6 minutes, 49 seconds

GCSE Physics - What is Red Shift? (2026/27 exams) by Cognito 423,436 views 6 years ago 5 minutes, 59 seconds

GCSE Biology - DNA Part 1 | Chromosomes & Genome (2027/28 exams) by Cognito 244,623 views 1 year ago 5 minutes, 41 seconds

GCSE Physics - Refraction of waves by Cognito 832,718 views 6 years ago 5 minutes, 10 seconds

GCSE Maths - What on Earth is y = mx + c (2026/27 exams) by Cognito 975,148 views 6 years ago 4 minutes, 53 seconds

GCSE Biology - Differentiation and Specialised Cells (2026/27 exams) by Cognito 654,111 views 4 years ago 4 minutes, 48 seconds

GCSE Maths - How to Write Expressions for the nth term of Arithmetic Sequences (2026/27 exams) by Cognito 877,687 views 6 years ago 6 minutes, 15 seconds

GCSE Chemistry - Separation Techniques - Filtration | Evaporation | Crystallisation by Cognito 337,543 views 1 year ago 5 minutes, 19 seconds

GCSE Maths - All the Trigonometry Equations you Need To know! (2026/27 exams) by Cognito 497,876 views 5 years ago 2 minutes, 53 seconds

GCSE Maths - How to Solve Simultaneous Equations - Using the Elimination Technique (2026/27 exams) by Cognito 819,934 views 4 years ago 8 minutes, 22 seconds

GCSE Biology - Levels of Organisation - Cells, Tissues, Organs and Organ Systems (2026/27 exams) by Cognito 790,344 views 4 years ago 4 minutes, 25 seconds

GCSE Physics - Atomic Structure, Isotopes & Electron Shells (2027/28 exams) by Cognito 129,363 views 11 months ago 5 minutes, 47 seconds