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Hand-picked clips from the best free teachers. Each one sits on its star, comes with ready-made cards where we have them, and carries a Heddy Score.

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Every clip, with its Heddy Score and where it sits on your map.

Showing 23 clips
YouTube6:49

GCSE Biology - Cell Types and Cell Structure (2026/27 exams)

CognitoBiology
On your map
gcse-biol-4-1-1-1aEukaryotic and prokaryotic cells · GCSE
b8Animal cell structure · KS3 Y7
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YouTube41:28

Stroll Through the Playlist (a Biology Review)

Amoeba SistersBiology
On your map
gcse-biol-4-1-3-2Osmosis · GCSE
gcse-biol-4-2-2-1aHow enzymes work · GCSE
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YouTube11:20

How are Proteins Made? Transcription & Translation

CognitoBiology
On your map
gcse-biol-4-6-1-3DNA and the genome · GCSE
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YouTube3:56

GCSE Biology Revision "Homeostasis"

FreesciencelessonsBiology
On your map
gcse-biol-4-5-1Homeostasis · GCSE
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YouTube4:42

GCSE Biology Revision "The Heart and Circulation"

FreesciencelessonsBiology
On your map
gcse-biol-4-2-2-2aThe heart and double circulation · GCSE
b27The circulatory system · KS3 Y8
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YouTube3:40

GCSE Biology Revision "The Nervous System"

FreesciencelessonsBiology
On your map
gcse-biol-4-5-2bThe reflex arc and reaction time · GCSE
b73Reflexes & the nervous system · GCSE
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YouTube5:13

GCSE Biology Revision "Photosynthesis"

FreesciencelessonsBiology
On your map
gcse-biol-4-4-1-1The photosynthesis reaction · GCSE
gcse-biol-4-4-1-2aRate of photosynthesis and limiting factors · GCSE
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YouTube152:43

GCSE Biology Paper 1 Revision

emmatheteachieBiology
On your map
gcse-biol-4-1-1-2Animal and plant cell structures · GCSE
gcse-biol-4-1-1-1aEukaryotic and prokaryotic cells · GCSE
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YouTube6:32

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

CognitoBiology
On your map
gcse-biol-4-6-1-3DNA and the genome · GCSE
b52DNA, genes & chromosomes · KS3 Y9
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YouTube4:02

GCSE Biology - Blood Vessels (2026/27 exams)

CognitoBiology
On your map
b28Blood vessels · GCSE
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YouTube4:24

GCSE Biology - Osmosis (2026/27 exams)

CognitoBiology
On your map
gcse-biol-4-1-3-2Osmosis · GCSE
gcse-biol-4-1-3-1aDiffusion and what changes its rate · GCSE
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YouTube5:07

GCSE Biology Revision "The Menstrual Cycle"

FreesciencelessonsBiology
On your map
gcse-biol-4-5-3-3Hormones in reproduction and the menstrual cycle · GCSE
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YouTube4:25

GCSE Biology - Levels of Organisation - Cells, Tissues, Organs and Organ Systems (2026/27 exams)

CognitoBiology
On your map
b2Tissues → organs → systems · KS3 Y7
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YouTube4:24

GCSE Biology Revision "Pathogens"

FreesciencelessonsBiology
On your map
b35Pathogens & disease · GCSE
gcse-biol-4-2-2-5Health and disease · GCSE
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YouTube7:06

GCSE Biology - How the Kidneys Work - (Kidneys Part 1/3)

CognitoBiology
On your map
gcse-biol-4-5-1Homeostasis · GCSE
gcse-biol-4-5-3-6Adrenaline, thyroxine and negative feedback · GCSE
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YouTube5:09

GCSE Biology - How the Eye Works (Part 1) - Structure of the Eye & Iris Reflex

CognitoBiology
On your map
gcse-biol-4-5-2bThe reflex arc and reaction time · GCSE
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YouTube4:55

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

CognitoBiology
On your map
gcse-biol-4-2-2-1aHow enzymes work · GCSE
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YouTube4:48

GCSE Biology - Active Transport (2026/27 exams)

CognitoBiology
On your map
gcse-biol-4-1-3-3Active transport · GCSE
b86Root hair cells · KS3 Y8
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YouTube3:29

GCSE Biology Revision "DNA and the Genome"

FreesciencelessonsBiology
On your map
gcse-biol-4-6-1-3DNA and the genome · GCSE
b52DNA, genes & chromosomes · KS3 Y9
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YouTube4:47

GCSE Biology - Differentiation and Specialised Cells (2026/27 exams)

CognitoBiology
On your map
gcse-biol-4-1-1-3Specialised cells · GCSE
gcse-biol-4-1-1-4Cell differentiation · GCSE
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YouTube3:59

GCSE Biology Revision "The Carbon Cycle"

FreesciencelessonsBiology
On your map
b59The carbon cycle · KS3 Y9
b60Decomposers & recycling · KS3 Y8
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