High School Skills

Diagnose Biology weaknesses by completing and marking a short set of representative Extended questions.

Diagnose Chemistry weaknesses by completing and marking a short set of representative Extended questions.

Diagnose Physics weaknesses by completing and marking a short set of representative Extended questions.

Diagnose practical-exam weaknesses by completing and marking representative Paper 5 tasks from all three sciences.

Classify lost marks as recall, conceptual understanding, application, calculation, data handling, practical method, or answer wording errors.

Record recurring mistakes in a science error log that includes a correction and a prevention strategy.

Rank science weaknesses by marks lost and recurrence to create a personal revision priority list.

Distinguish what the command words state, describe, explain, compare, calculate, and suggest require.

Use the mark allocation to judge the required number of distinct points in a response.

Construct a scientific explanation using a clear cause-process-result chain.

Write comparison answers using explicit paired statements rather than isolated facts.

Show equation selection, substitution, working, and units in numerical answers.

Round calculated results to a precision justified by the data in the question.

Map an unfamiliar question context to the relevant scientific principle before answering.

Eliminate multiple-choice distractors by checking definitions, units, trends, and limiting cases.

Identify the independent, dependent, and controlled variables in an investigation.

Read analogue and digital measuring instruments at an appropriate precision.

Construct a results table with suitable headings, units, and consistent precision.

Choose graph axes and scales that use the plotting area effectively.

Plot data accurately and draw an appropriate best-fit line or curve.

Identify anomalous results without forcing them onto a trend.

Calculate and interpret a gradient or intercept from a graph.

Use repeated readings and means appropriately when processing experimental results.

Write a reproducible experimental method that states what to change, measure, and keep constant.

Explain how a named control variable can be kept constant in practice.

Select apparatus with a suitable range and resolution for a stated measurement.

Identify a specific experimental hazard and give a matching safety precaution.

Distinguish random error from systematic error in an experimental context.

Link a practical limitation to a specific, workable improvement.

Evaluate whether a conclusion is supported by the range, pattern, and repeatability of the results.

Relate electric current, charge, and time using Q = It.

Relate potential difference, transferred energy, and charge using V = W/Q.

Calculate resistance from potential difference and current using R = V/I.

Determine current, potential difference, and total resistance in series circuits.

Determine current, potential difference, and combined resistance in parallel circuits.

Place ammeters and voltmeters correctly in circuit diagrams.

Interpret current-potential-difference graphs for resistors, filament lamps, and diodes.

Calculate electrical power and transferred energy using P = IV and E = Pt.

Calculate speed and acceleration and extract them from distance-time and speed-time graphs.

Calculate a resultant force and apply F = ma to motion problems.

Apply the principle of moments to objects in equilibrium.

Apply conservation of energy and calculate efficiency in energy-transfer questions.

Explain conduction, convection, and radiation in thermal-transfer contexts.

Apply the wave equation and interpret changes shown in wave diagrams.

Explain electromagnetic induction using changes in magnetic flux through a conductor.

Determine half-life from decay data and evaluate safety precautions for ionising radiation.

Design a circuit to measure the current through and potential difference across a component.

Plan an investigation of how wire length affects electrical resistance.

Determine the density of a regular or irregular solid from suitable measurements.

Plan a load-extension investigation and determine a spring constant from its results.

Determine a pendulum's period while reducing the effect of timing error.

Determine the focal length of a converging lens from object and image measurements.

Plan a fair comparison of thermal insulation materials.

Construct balanced symbol equations from descriptions of chemical reactions.

Calculate reacting masses using moles and balanced equations.

Calculate solution concentration from amount, volume, or experimental data.

Relate ionic, simple molecular, giant covalent, and metallic structures to physical properties.

Use electronic structures to explain periodic trends and ion formation.

Predict products and observations in electrolysis of molten and aqueous ionic substances.

Explain changes in reaction rate using collision theory.

Predict the effect of changing conditions on a reversible reaction at equilibrium.

Select a suitable method to separate or purify substances in a mixture.

Calculate and interpret retention factors from paper chromatography results.

Process titration readings to select concordant results and calculate a mean titre.

Plan the preparation of a pure, dry sample of a soluble salt.

Identify common gases from their specified chemical tests and observations.

Identify selected cations and anions from flame tests and reagent observations.

Plan an investigation of a factor affecting reaction rate.

Process temperature data to compare energy changes in chemical reactions.

Predict net movement by diffusion, osmosis, or active transport in a stated biological context.

Explain how temperature, pH, and substrate concentration affect enzyme activity.

Interpret data on limiting factors affecting photosynthesis.

Explain water uptake and translocation through a plant using the relevant transport tissues.

Relate features of gas-exchange surfaces to efficient diffusion.

Compare aerobic and anaerobic respiration using reactants, products, and energy transfer.

Explain negative feedback in blood glucose control or thermoregulation.

Predict genotype and phenotype ratios using a monohybrid genetic cross.

Calculate image magnification or actual specimen size from microscopy information.

Produce a biological drawing that follows Cambridge practical conventions.

Select and interpret food tests for reducing sugars, starch, protein, and lipids.

Plan an osmosis investigation using plant tissue and percentage change in mass.

Plan an enzyme investigation while controlling temperature and pH.

Plan an investigation of a factor affecting the rate of photosynthesis.

Plan an investigation of a factor affecting transpiration.

Apply quadrat or transect sampling to estimate distribution or abundance.

Complete and analyse a timed Biology structured-question set.

Complete and analyse a timed Chemistry structured-question set.

Complete and analyse a timed Physics structured-question set.

Complete and analyse a timed Biology Paper 5 section.

Complete and analyse a timed Chemistry Paper 5 section.

Complete and analyse a timed Physics Paper 5 section.

Allocate time within a science paper using marks available and question difficulty.

Convert the final error-log patterns into a focused revision and past-paper schedule.