Fivethirty
100-session guided path
A complete path through IB HL Mathematics, organised into exactly 100 focused sessions.
Full Feature List
Everything in 100 Days of Math has a purpose.
Fivethirty is the platform behind it — a complete self-learning system: lessons, questions, reviews, notes, dashboard, and recommendations working together in one structured journey.
Every feature is built around one question: what helps a student understand the mathematics, use their effort well, and know what to study next?
01 / The Path
Learning path & curriculum design
A complete route through IB HL Mathematics, organised so students spend less energy deciding what to study and more energy learning.
Six main modules
The full path is divided into Numbers & Algebra, Functions, Trigonometry, Vectors, Statistics & Probability, and Calculus.
Module structure
Students select their required module.
Chapter-based progression
Students are guided through chapters in order by default, but can still jump into any chapter when they need help with a specific topic.
Last-read continuation
The “Start now” flow brings students back to the last-read chapter, making it easier to keep momentum.
Teacher-designed sequencing
Topics are ordered according to how an experienced IB teacher would build understanding, not merely according to syllabus order.
Foundation-to-mastery structure
The path moves from prerequisite foundations to core concepts, exam applications, review, and mastery.
Exam-informed prioritisation
Concepts are ranked and prioritised based on historical IB exam patterns and expected exam value, with more time given to higher-return concepts.
A path is not just a syllabus. It is a sequence of decisions about what should come next.
02 / Inside Each Chapter
Chapter and lesson experience
Each chapter is built as a scrollable learning sequence, combining short videos, quiz cards, notes, and strategic framing.
Chapter and review sessions
Sessions can introduce new learning or consolidate previous chapters by revisiting weak concepts through spaced and interleaved questions.
Scrollable card flow
Each chapter is presented as a sequence of cards, so students move through videos, explanations, and practice without facing a long page of content.
Short videos
Each chapter has a collection of short 1–5 min videos, each centred on one concept, making them useful for gap-filling and quick catch-up.
Tap-to-play video controls
Videos include player controls such as full screen, captions, replay, and seeking.
Strategic chapter introductions
Introduction video to each chapter gives an overview of the chapter, common mistakes, and what is important for the exams.
Chapter notes
Students can follow along with the videos, and use the notes as a record of explanations, mistakes, and questions to revisit.
Ti-Nspire GDC familiarisation
Chapter notes include Ti-Nspire GDC keypad and screenshots so students can annotate on them as they familiarise with the calculator buttons and functions.
Chapter conclusions
Each chapter ends with a closing message that gives students a study tip, a mental reset, and encouragement to keep going — important support, like a teacher gives in class.
03 / Practice
Practice and mastery
The question bank is not built for endless drilling. It is designed to strengthen reasoning, logical links, and exam-ready understanding.
Multiple question types
The system includes multiple choice, free response, sequence questions, exam-style written questions, and conceptual questions.
Reasoning-first questions
Questions are designed to test reasoning, not just number substitution.
IB exam-style phrasing
Questions use IB-style command terms to help students become familiar with the language and expectations of IB Mathematics.
Immediate feedback
Chapter questions give immediate feedback, so students will know if they are correct or wrong.
Generous retries and hints
Students can retry questions until correct. Hints and fallback help support students to continue with the question before the answer is revealed.
Worked solutions
Worked solutions are available after a correct attempt or after two incorrect attempts, helping students understand the reasoning instead of only checking the answer. Solution steps are shown one at a time, encouraging students to reveal only as many as they need to correct their own working.
100% quiz success philosophy
The quiz experience is designed so students can eventually complete every question successfully.
Paper-style practice cues
Quiz cards show whether GDC or calculator use is allowed, helping students practise with exam conditions in mind.
Every question should move the learning forward.
04 / Direction
Review, recommendations, and dashboard
The system tracks concepts, brings back weak ideas, and helps students answer the question: what should I study next?
Dedicated review sessions
Review sessions are separate from new chapter sessions, giving students deliberate time to consolidate previous learning.
Concept revisits
Weak concepts return in later review sessions through different questions testing the same underlying idea, not cloned number substitutions.
Spaced practice
Students revisit concepts over time to support long-term retention and bring back fragile understanding before it becomes a permanent gap.
Exam-weighted review priority
When many weak concepts need review, higher exam-value concepts are prioritised.
Concept mastery tracking
The system tracks student progress at the concept level, so progress is measured by understanding, not only chapter completion.
Data-led concept recommender
The app recommends concepts to focus on based on performance data, weak responses, and historical exam optimisation.
Learning dashboard
Students can see chapter progress, concept mastery, recommended focus areas, and a simple indication of whether they are on track.
Less overwhelming analytics
The dashboard avoids showing too much data and focuses on what matters next.
05 / Self-Learning
Student independence and study psychology
Fivethirty is built for students who want a calmer, clearer way to study seriously.
Reduced decision fatigue
Students do not need to constantly decide what to study next. The path tells them what matters, what can wait, and where to focus.
Confidence restoration
The course is framed for students who feel behind, overwhelmed, or burnt out, with reassurance before difficulty and support for missing foundations.
Safe challenge environment
Students can attempt every question with hints, retries, and support instead of giving up when stuck.
Encouragement without fear
There is a deliberate choice not to use fear-based messaging, aggressive gamification, leaderboards, or social pressure. We believe in building a love of learning mathematics.
Designed for independent learners
The app supports students who want to learn at their own pace, in their own style, while taking more responsibility for their learning.
Bookmarks
Students can bookmark important cards, including videos, for easier retrieval and personal revision.
Formula booklets
Formula booklets are available without sign-in from the bookshelf page and are designed to feel familiar to the actual IB formula booklet.
Catch-up and acceleration
Students who missed lessons can use the path to close gaps, while students who want to move ahead can use holidays to accelerate through chapters.
The goal is not to make students study more. The goal is to help them study better.
06 / Product
Product experience, access, and coverage
The interface, access model, and content coverage are designed around clarity, continuity, and full IB HL Mathematics preparation.
Card-based chapter interface
Chapter content is broken into cards rather than long pages, keeping the experience focused and manageable.
Complete IB HL Mathematics coverage
The full path is intended to cover the entire IB HL Mathematics syllabus, including pre-IB foundations, GDC skills, and IB-style applications.
Coverage beyond past-paper cloning
The course covers all concepts in the syllabus even if they have not appeared frequently in past IB exams, so students do not learn only by chasing past-paper patterns.
Harder review questions
Review question banks include more challenging differentiation questions aimed at conceptual depth and Grade 7 readiness.
Module-by-module purchase
The full course is split into six paid modules, and students can buy one or more modules rather than the entire path at once.
Free preview chapters
The first 1–2 chapters of each module are free after signup, so students can try the teaching style before committing.
Ready to open the library?
Start with the free preview chapters and see whether the path fits the way you want to learn.