Mathematics4 lessons
University calculus and multivariable methods
Practise improper integrals, series, gradients and multiple integrals, with explicit conditions and worked examples.
32 quiz questions · University
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34 short courses130 lessons1040 quiz questionsFree · English
34 courses available
Mathematics3 lessons
Linear algebra: spaces, eigenvectors and fitting
Develop matrix, vector-space and projection reasoning before using least squares.
24 quiz questions · University
Mathematics3 lessons
Differential equations and numerical methods
Connect initial conditions, linear differential equations and numerical approximation with error and conditioning.
24 quiz questions · University
Mathematics2 lessons
Probability models and continuous distributions
Work with conditional probability, normalization, densities and expectation.
16 quiz questions · University
Mathematics3 lessons
Real analysis: limits and rigorous reasoning
Build epsilon proofs and distinguish pointwise convergence, uniform convergence and compactness.
24 quiz questions · Advanced university
Mathematics3 lessons
Abstract algebra and discrete proofs
Study groups, vector-space quotients and proof techniques with carefully scoped definitions.
24 quiz questions · Advanced university, University
Mathematics5 lessons
Advanced mathematical methods
Study complex analysis, residues, Fourier series, PDE boundary conditions and convexity through focused lessons.
40 quiz questions · Advanced university
Physics4 lessons
University mechanics and waves
Connect rotation, oscillations, central forces and continuous wave models.
32 quiz questions · University
Physics4 lessons
Fields, circuits and thermal physics
Work with Gauss laws, electrical field models, thermodynamic laws and electromagnetic waves.
32 quiz questions · University
Physics4 lessons
Introduction to quantum physics and relativity
Compare relativistic measurement with quantum states, the Schrödinger equation and uncertainty.
32 quiz questions · University
Physics3 lessons
Analytical and statistical mechanics
Use Lagrangian and Hamiltonian methods, then interpret canonical ensembles.
24 quiz questions · Advanced university
Physics4 lessons
Advanced physics methods and spacetime
Explore perturbation theory, scattering, variational quantum estimates and a conceptual bridge to general relativity.
32 quiz questions · Advanced university
Astronomy & space4 lessons
Space and astronomy foundations
Learn sky motion, the Solar System, astronomical light and safe telescope interpretation.
32 quiz questions · School (K–12)
Astronomy & space4 lessons
Stars, distances and stellar evolution
Connect parallax, magnitudes and stellar structure to evolutionary paths and remnants.
32 quiz questions · University
Astronomy & space4 lessons
Orbits, missions and exoplanets
Explore two-body motion, spacecraft data, planet detection and atmospheric interpretation.
32 quiz questions · University
Astronomy & space4 lessons
Astrophysics, cosmology and inference
Study galaxy models, cosmic expansion, black holes and uncertainty in astronomical measurements.
32 quiz questions · Advanced university
Artificial intelligence4 lessons
AI foundations and responsible use
Understand learning tasks, datasets, honest evaluation, privacy and human responsibility. No paid AI tool is required.
32 quiz questions · School (K–12)
Artificial intelligence4 lessons
Mathematics of machine learning
Work through regression, gradients, classification and generalization using paper-based examples.
32 quiz questions · University
Artificial intelligence4 lessons
Machine learning methods and validation
Compare trees, clustering, PCA and validation without confusing training performance with evidence of generalization.
32 quiz questions · University
Artificial intelligence4 lessons
Neural networks, attention and embeddings
Build from artificial neurons and backpropagation to attention and embedding geometry.
32 quiz questions · University, Advanced university
Artificial intelligence4 lessons
Generative AI, RAG and practical evaluation
Practise clear prompting, retrieval-grounded workflows, evidence checking and permission-aware deployment.
32 quiz questions · School (K–12), University
Computer science4 lessons
Python programming foundations
Learn core Python concepts with paper-based reasoning and small code-reading tasks.
32 quiz questions · University
Computer science4 lessons
Web development foundations
Study HTML, CSS, JavaScript and accessible web structure without a paid bootcamp.
32 quiz questions · University
Computer science4 lessons
SQL and relational databases
Learn tables, queries, joins and data modelling with original exercises.
32 quiz questions · University
Computer science4 lessons
Data science foundations
Work through data cleaning, visualization, modelling and interpretation.
32 quiz questions · University
Computer science4 lessons
Cybersecurity foundations
Study defensive security, privacy and risk management without offensive exploitation instructions.
32 quiz questions · University
Mathematics4 lessons
Practical statistics and inference
Learn descriptive statistics, probability, sampling and inference with worked reasoning.
32 quiz questions · University
Business & economics4 lessons
Financial accounting fundamentals
Learn statements, double entry and basic analysis with fictional examples.
32 quiz questions · University
Computer science4 lessons
Spreadsheet skills
Learn formulas, references, cleaning and charts for practical study and office work.
32 quiz questions · University
Business & economics4 lessons
Project management foundations
Learn scope, scheduling, risk and communication through practical scenarios.
32 quiz questions · University
Reading & writing4 lessons
Academic writing and research
Learn research questions, source evaluation, argument structure and citation practice.
32 quiz questions · University
Business & economics4 lessons
Digital marketing foundations
Learn audiences, funnels, content, measurement and responsible experimentation.
32 quiz questions · University
Art & music4 lessons
Graphic design foundations
Learn hierarchy, typography, layout and accessible visual communication.
32 quiz questions · University
Study & wellbeing4 lessons
Research and study skills
Build retrieval, note-making, planning and evidence-checking skills for independent learners.
32 quiz questions · University
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