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A practical IB Physics SL guide to the 2025 syllabus: the new Paper 1A and 1B structure, Paper 2, scientific investigation, no-options assessment and how to update old notes.
A practical IB Chemistry SL guide to the 2025 syllabus and assessment model: structure and reactivity, Paper 1A and 1B, Paper 2, scientific investigation and revision strategy.
A practical IB Biology guide to the 24-mark Scientific Investigation: choose a workable research question, control variables, process data, draw a supported conclusion and evaluate limitations with specific improvements.
Learn how IB Biology SL Paper 1, Paper 2 and the scientific investigation combine through weighted assessment, how grade boundaries work and how to plan component-level revision.
Compare transverse and longitudinal waves using particle motion, wave direction, compressions and rarefactions.
Revise diploid and haploid chromosome sets, meiosis, fertilisation and common IB Biology mistakes.
Learn A-Level Physics energy transformations with energy stores, transfer pathways, Sankey diagrams, efficiency and common exam mistakes.
Revise A-Level Chemistry electron domains, VSEPR shapes, lone pairs, bond angles, molecular geometry and common exam mistakes.
Revise IB Biology SL abiotic factors, tolerance ranges, limiting factors and how environmental variables affect distribution.
Learn the function of a salt bridge in A-Level Chemistry, including ion movement, electrical neutrality, cell circuits and exam mistakes.
Revise A-Level Biology active and passive transport with concentration gradients, ATP, carrier proteins, examples, common mistakes and practice.
Revise A-Level Chemistry sigma and pi bonds with orbital overlap, single, double and triple bonds, rotation, common mistakes and practice.