Dr Khalid Seidi · Biology & Chemistry Teacher

Science lessons that stick.

Interactive lessons, quizzes, flashcards, cheat sheets, games and real past paper questions for KS3 Science, IGCSE, IAS and IAL Biology and Chemistry (Edexcel and Cambridge), and preparation for medicine.

See the courses →

KS3Science

IGCSEBiology & Chemistry

IAS / IALBiology & Chemistry

MedicinePreparation

Courses available now

Each course has lessons, a quiz, flashcards, a cheat sheet and exam questions with mark schemes. Your progress is saved on your device.

Live

IGCSE Biology · Edexcel · Unit 1

2.3 Stem Cells

3 lessons · 42 quiz questions · 40 flashcards · 35 classified exam questions · 5 games

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Live

IAS Biology · Edexcel International · Unit 1

Topic 1A: Biological Molecules

5 lessons · 42 quiz questions · 44 flashcards · 63 past paper questions (2013–2022)

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Coming soon

KS3 ScienceCells, particles, forces and more

IGCSE ChemistryEdexcel & Cambridge

IAL BiologyUnits 2–6

IAS / IAL ChemistryEdexcel International

Cambridge IGCSE Biology0610 topics

Medicine preparationInterviews and admissions tests

How it works

Every lesson follows the same four steps, so students always know what to do next.

Step 1LearnRead the lesson with highlighted key terms and diagrams.

Step 2RecallFlashcards until most of the deck is known.

Step 3TestScore 60% or more on the quiz.

Step 4ApplyAnswer real exam questions and mark them with the mark scheme.

About Dr Khalid Seidi

Biology and Chemistry teacher for KS3 Science, IGCSE, IAS and IAL (Edexcel and Cambridge), helping students build strong foundations and prepare for careers in medicine.