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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
Volume Explorer
Spin a region about the x-axis or the y-axis and watch the solid form in 3D. Drag a slice to see each disc or washer, set up the integral yourself, then reveal it to check.
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Class Notes
Topic-by-topic structured notes with key definitions, worked examples, and examiner tips. Aligned to the IB AA and AI syllabi.
Coming soon
Formula Booklets
Official formula booklets for every course and level, plus a Grade 10 foundations booklet — download and print.
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