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Algebra 1 · Geometry · AP Biology · AP Chemistry · AP Physics 1: Algebra-Based · AP Environmental Science · AP Physics 2: Algebra-Based

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11:21
AP Bio · Transcription and Translation

How are Proteins Made? Transcription & Translation

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1.9M views on YouTube

5:36
Geometry · Parallel Lines and Transversals

GCSE Maths - Alternate, Corresponding and Allied Angles - Parallel Lines Angle Rules (2026/27 exams)

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966K views on YouTube

5:31
Algebra 1 · Compound Inequalities

GCSE Maths - What are Inequalities? (Inequalities Part 1) (2026/27 exams)

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947K views on YouTube

6:33
AP Bio · DNA Structure and Replication

GCSE Biology - What is DNA? (Structure and Function of DNA)

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894K views on YouTube

6:15
Algebra 1 · Arithmetic Sequences

GCSE Maths - How to Write Expressions for the nth term of Arithmetic Sequences (2026/27 exams)

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858K views on YouTube

6:20
Algebra 1 · Order of Operations

How to use BODMAS (Order of Operations)

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691K views on YouTube

4:59
Physics 2 · Electromagnetic Induction

GCSE Physics - Generator Effect / Electromagnetic Induction (2026/27 exams)

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681K views on YouTube

8:14
Geometry · Trigonometric Ratios

Trigonometry | SOH CAH TOA | Sin, Cos, Tan

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598K views on YouTube

5:14
Algebra 1 · Completing the Square

GCSE Maths - How to Factorise Quadratics by Completing the Square (Part 1 - Factorise When a=1)

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595K views on YouTube

5:59
Geometry · Proving Triangles Congruent: SSS and SAS

GCSE Maths - Congruent Triangle Rules (2026/27 exams)

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578K views on YouTube

6:30
AP Bio · Mutations

GCSE Biology - What are DNA Mutations? (2026/27 exams)

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499K views on YouTube

2:48
Algebra 1 · Graphing Functions and Key Features

GCSE Maths - What are Quadratic Graphs? (2026/27 exams)

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463K views on YouTube

6:03
Algebra 1 · Solving Linear Inequalities

GCSE Maths - Solving Inequalities by Plotting them on a Graph (Inequalities Part 4) (2026/27 exams)

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404K views on YouTube

5:39
Geometry · Area of Sectors

GCSE Maths - Area of a Sector and Length of an Arc of a Circle (Circles Part 3) (2026/27 exams)

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363K views on YouTube

5:27
Algebra 1 · The Quadratic Formula and the Discriminant

GCSE Maths - Solving Quadratics Using the Quadratic Formula (2026/27 exams)

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354K views on YouTube

5:19
AP Chem · Separating Mixtures and Solubility

GCSE Chemistry - Separation Techniques - Filtration | Evaporation | Crystallisation

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309K views on YouTube

4:06
AP Bio · Energy Flow Through Ecosystems

GCSE Biology - Trophic Levels - Producers, Consumers, Herbivores & Carnivores (2026/27 exams)

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304K views on YouTube

4:31
Algebra 1 · Solving Linear Inequalities

GCSE Maths - Solving Algebraic Inequalities with 1 Inequality Sign (Inequalities Part 2)

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297K views on YouTube

6:10
AP Bio · Feedback and Homeostasis

GCSE Biology - Homeostasis | Receptors, Coordination Centres, Effectors | Negative Feedback

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274K views on YouTube

5:19
AP Chem · Acid–Base and Redox Reactions

GCSE Chemistry - Redox Reactions - Displacement Reactions | Ionic Equations | Half Equations

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256K views on YouTube

8:20
AP Bio · Cell Size and Surface Area

GCSE Biology - Surface Area to Volume Ratio (2026/27 exams)

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256K views on YouTube

3:28
Geometry · Volume of Prisms and Cylinders

How to Find the Volume of Cylinders & Prisms

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249K views on YouTube

5:37
AP Bio · Biological Macromolecules

A-Level Biology - Biological Molecules - Carbohydrates | Lipids | Proteins | Nucleic Acids

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249K views on YouTube

4:59
Algebra 1 · Ratios, Rates, and Proportions

GCSE Maths - What are Ratios & How to Simplify Them (Part 1) (2026/27 exams)

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222K views on YouTube