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GDC Skills Guide
Step-by-step Casio fx-CG50 instructions for the full IB Maths syllabus. Every method, every topic — with animated GIFs showing the exact keystrokes. Filter by course (AA or AI) and search any topic instantly.
Covers: Run-Matrix · Statistics · Graph · Distribution · Equation & Recursion modes
Class Notes
Topic-by-topic structured notes with key definitions, worked examples, and examiner tips. Aligned to the IB AA and AI syllabi.
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Formula Sheets
Printable formula reference cards for every topic — condensed, clean, and aligned to the IB formula booklet so you know what to expect.
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IA Guidance
Internal Assessment support — topic ideas, structure guidance, moderation criteria, and annotated exemplars to help you get started.
On the horizon
Discovery Activities
Student versions — open access · No login neededTopic 1
Number & Algebra
Sequences · Logs · Binomial · Proof · Complex numbers
3 activities
SL & HL · 1.2
The Auditorium
Arithmetic sequences and series — discover the nth term, derive the Gauss sum formula, and decode sigma notation through a concert hall scenario.
⏱ ~40 minGroups of 3–4SL & HL
SL · 1.3 · 1.8
Forever Squared
Geometric sequences and series — discover the common ratio, derive the sum formula, and explore the conditions for convergence of infinite series.
⏱ ~45 minGroups of 3–4SL
HL · 1.12–1.14
The Tiling Collective
Complex numbers — Argand diagram, modulus-argument form, De Moivre's theorem, and roots of unity through a geometric tiling scenario.
⏱ ~55 minGroups of 3–4HL
Topic 2
Functions
Transformations · Inverses · Rational functions · Modelling
Coming soon
Activities coming soonFunction transformations, inverse functions, rational functions, modelling…
Topic 3
Geometry & Trigonometry
Trig identities · Unit circle · Vectors · Voronoi
Coming soon
Activities coming soonTrigonometric equations, 3D geometry, vectors, Voronoi diagrams…
Topic 4
Statistics & Probability
Sampling · Distributions · Regression · Bayes
3 activities
SL & HL · 4.1–4.3
The City Sleep Study
Descriptive statistics — mean, median, IQR, outlier tests, and box plots through a real-dataset scenario about urban sleep patterns.
⏱ 50 minGroups of 3–4SL & HL
SL & HL · Bivariate stats
The Soccer Scout Report
Bivariate statistics — scatter plots, linear regression, Pearson's r and Spearman's rank through a football scouting data scenario.
⏱ 50 minGroups of 3–4SL & HL
HL · 4.8
The Tilted Board
Binomial distribution — probability mass function, cumulative probabilities, and expected value through a physical tilted-board experiment.
⏱ 50 minGroups of 3–4HL
Topic 5
Calculus
Differentiation · Integration · Kinematics · Differential equations
2 activities
HL · 5.13
Limits of Trig Expressions using Maclaurin Series
Evaluating limits involving trigonometric and rational terms — Maclaurin series, L'Hôpital's rule, and conditions for finite limits.
⏱ ~25 minGroups of 3HL
HL · 5.9 · 5.16
The Fox & the Rabbit
Coupled differential equations and phase portraits — predator-prey dynamics modelled through Euler's method and phase plane analysis.
⏱ 55 minGroups of 3–4HL