The 20-route learning estate
eduKateSengkang is organised as a Learning Castle: existing subject hubs, level routes, examination routes and learning-system pages retain their jobs. This page is the master upgrade directory. It does not replace those owners. It makes the work visible, assigns every upgrade to one route, and gives new or substantially revised articles stable IDs so later batches can be connected without losing track of what is complete.
Numbering rule
Each route has a -000 hub pointer. Article slots then use reserved tens: -010, -020, -030 and so on. The first upgrade programme reserves up to 150 article slots per route, ending at -1500. Existing high-value URLs are upgraded in place wherever practical; the ID identifies the editorial job, not a requirement to create a new URL.
| Route | Hub ID | Primary job | Existing owner / destination | Reserved article IDs | Status |
|---|---|---|---|---|---|
| SK-01 | SK-01-000 | Homepage, Sengkang Tuition, commercial/navigation/root accuracy | Homepage / Tuition Centre owner | SK-01-010–SK-01-1500 | OPEN |
| SK-02 | SK-02-000 | Primary 1–3 English | Primary English Learning Hub | SK-02-010–SK-02-1500 | OPEN |
| SK-03 | SK-03-000 | Primary 4–6 English + PSLE English | Primary English Learning Hub / PSLE Learning Guide | SK-03-010–SK-03-1500 | OPEN |
| SK-04 | SK-04-000 | Secondary 1–2 English | English Hub | SK-04-010–SK-04-1500 | OPEN |
| SK-05 | SK-05-000 | Secondary 3–4 English + SEC English | English Hub | SK-05-010–SK-05-1500 | OPEN |
| SK-06 | SK-06-000 | Vocabulary, grammar, reading, writing and English skills | Complete English Index | SK-06-010–SK-06-1500 | OPEN |
| SK-07 | SK-07-000 | Primary 1–3 Mathematics | Mathematics Hub | SK-07-010–SK-07-1500 | OPEN |
| SK-08 | SK-08-000 | Primary 4–6 Mathematics + PSLE Mathematics | Mathematics Hub / PSLE Learning Guide | SK-08-010–SK-08-1500 | OPEN |
| SK-09 | SK-09-000 | Secondary 1–2 Mathematics | Mathematics Hub | SK-09-010–SK-09-1500 | OPEN |
| SK-10 | SK-10-000 | Secondary 3–4 Mathematics + SEC Mathematics | Mathematics Hub | SK-10-010–SK-10-1500 | OPEN |
| SK-11 | SK-11-000 | Additional Mathematics | Additional Mathematics owner | SK-11-010–SK-11-1500 | OPEN |
| SK-12 | SK-12-000 | Primary 3–4 Science | Science Hub | SK-12-010–SK-12-1500 | OPEN |
| SK-13 | SK-13-000 | Primary 5–6 Science + PSLE Science | Science Hub / PSLE Science Learning Guide | SK-13-010–SK-13-1500 | OPEN |
| SK-14 | SK-14-000 | Secondary Science + scientific reasoning | Science Hub | SK-14-010–SK-14-1500 | OPEN |
| SK-15 | SK-15-000 | Learning Castle, Learning Runtime and study methods | Learning Runtime Hub | SK-15-010–SK-15-1500 | OPEN |
| SK-16 | SK-16-000 | Examination performance, revision, assessment and error repair | Examination Craft | SK-16-010–SK-16-1500 | OPEN |
| SK-17 | SK-17-000 | Parent guides, tuition, teaching and student support | Parents’ Guide | SK-17-010–SK-17-1500 | OPEN |
| SK-18 | SK-18-000 | Algorithms, computing and advanced mathematics | Algorithms & Computing Hub | SK-18-010–SK-18-1500 | OPEN |
| SK-19 | SK-19-000 | Advanced science and world-knowledge science material | Complete Science Index | SK-19-010–SK-19-1500 | OPEN |
| SK-20 | SK-20-000 | Estate archaeology: duplication, location leakage, orphan control, cannibalisation and consolidation candidates | Learning Castle Registry | SK-20-010–SK-20-1500 | OPEN |
Article register
The first-wave titles and status ledger are live in the eduKate Sengkang Article Register | SK-01 to SK-20. Use it to claim the next article ID, see protected owners and avoid duplicating work already active in another branch.
Protection-first reader standard
All 20 branches now follow the eduKate Sengkang Reader Experience Standard: protect strong pages, connect isolated pages, improve formatting only where it helps, use bounded surgery for specific defects, and modernise only when the existing article no longer completes its reader job.
Article state
Every inspected URL receives one state before work begins: PROTECT for ranking or strategically sensitive owners; KEEP for sound pages needing no substantial rewrite; MODERNISE for useful but outdated pages; SURGERY for small bounded repairs; RETARGET for pages that need a distinct adjacent search job; CONSOLIDATION CANDIDATE for overlapping intent that requires owner review; LOCATION LEAKAGE for misplaced locality; or HISTORICAL for material worth preserving without major reinvestment.
Completion rule
An article ID becomes complete only when the assigned existing URL or new article has a defined reader job, correct owner, current factual scope, useful internal return path and no unresolved collision with another Sengkang owner. A branch can therefore inspect more than 150 URLs without rewriting 150 pages. The 150 slots are a controlled first-wave capacity, not a quota.
Castle relationship
This programme sits under the existing Learning Castle and follows its one-owner-many-routes rule. English, Mathematics, Science, Examination Craft, Learning Runtime and Algorithms retain their existing canonical roles. The master directory exists to coordinate upgrades and make unfinished work visible; it does not create twenty competing subject hubs.
Complete-index crosswalk
Use the 20 routes above to decide ownership and upgrade work. Use these Complete Archives when the job is enumeration, orphan control or direct deep-article discovery.
English Archive · Mathematics Archive · Science Archive · Examination Archive · Learning Runtime Archive · Algorithms & Computing Archive
Deep fallback discovery
The subject hubs and Complete Archives remain the preferred routes. These live indexes are the final orphan-control layer: they expose every published Page and Post through paginated internal links so newly published or unusually placed content still has a crawlable return path while specialist routing is updated.
Browse every published Page
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100 Primary English Tips Rebuilt as 10 Language Capabilities | Darwin × Voyage
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100 Primary Mathematics Tips Rebuilt as 10 Capabilities | Darwin × Voyage
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100 Primary Science Tips Rebuilt as 10 Scientific Capabilities | Darwin × Voyage
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7 Mathematics Strategies That Survive Unfamiliar Questions
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A Capability Profile Without Labelling the Child | Evidence, Support Conditions and the Next Learning Move
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A Workable Weekday Routine for P4 to P6: School, Rest, Screens, Study
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Accessible Learning Tasks Without Silent Target Changes | Change Access, Preserve the Learning Goal
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Accessible Learning Tasks Without Silent Target Changes | Preserve the Learning Goal While Changing Access
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Additional Mathematics Challenging Questions | An Advanced Worked Workshop
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Additional Mathematics Classroom | Chapter 10: Differentiation — Gradient Functions, Power/Product/Quotient/Chain Rules, Tangents, Normals and Rates | SEC G2 K232 / G3 K341
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Additional Mathematics Classroom | Chapter 11: Further Applications of Differentiation — Increasing/Decreasing Functions, Stationary Points, First/Second Derivative Tests and Optimisation | SEC G2 K232 / G3 K341
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Additional Mathematics Classroom | Chapter 12: Differentiation of Trigonometric, Exponential and Logarithmic Functions — Advanced Chain Rule, Tangents, Rates and Optimisation | SEC G3 K341
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Additional Mathematics Classroom | Chapter 13: Integration — Reverse Differentiation, Constants, Linear-Factor Integrals and G3 Trigonometric/Exponential/Logarithmic Extension | SEC G2 K232 / G3 K341
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Additional Mathematics Classroom | Chapter 14: Applications of Integration — Definite Integrals, Signed Accumulation, Area Under Curves and Axis Crossings | SEC G2 K232 / G3 K341
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Additional Mathematics Classroom | Chapter 15: Kinematics — Displacement, Velocity, Acceleration, Direction Changes, Total Distance and Motion Through Calculus | SEC G3 K341
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Additional Mathematics Classroom | Chapter 1: Simultaneous Equations, Polynomials and Partial Fractions | SEC G2 K232 / G3 K341
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Additional Mathematics Classroom | Chapter 2: Quadratic Functions, Discriminants, Inequalities and Line–Curve Conditions | SEC G2 K232 / G3 K341
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Additional Mathematics Classroom | Chapter 3: Binomial Theorem, General Terms and Coefficient Reasoning | SEC G3 K341
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Additional Mathematics Classroom | Chapter 4: Surds, Exact Algebra and Rationalising Denominators | SEC G2 K232 / G3 K341
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Additional Mathematics Classroom | Chapter 5: Exponential and Logarithmic Functions, Laws, Equations, Graphs and Models | SEC G3 K341
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Additional Mathematics Classroom | Chapter 6: Coordinate Geometry in Two Dimensions — Lines, Midpoints, Rectilinear Areas and Circles | SEC G2 K232 / G3 K341
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Additional Mathematics Classroom | Chapter 7: Linear Law, Straight-Line Transformations, Parameter Recovery and Model Testing | SEC G3 K341
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Additional Mathematics Classroom | Chapter 8: Trigonometric Functions, Graphs, Identities, Formulae and Equations | SEC G2 K232 / G3 K341
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Additional Mathematics Classroom | Chapter 9: Proofs in Plane Geometry — Parallel Lines, Congruence, Similarity, Midpoint and Tangent–Chord Reasoning | SEC G3 K341
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Additional Mathematics Classroom | Complete Chapter-by-Chapter SEC 2027 Route | G2 K232 / G3 K341
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Additional Mathematics Learning Hub | Secondary 3–4 A-Math Guides
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Additional Mathematics Strategies | Build the Algebra Route Before Speed
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Additional Mathematics Study Guide | SEC G2 & G3, Topics and Worked Examples
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Additional Mathematics Tuition Punggol | Secondary 3–4 A-Math | The Voyage Series
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Additional Mathematics Tuition Sengkang | S3–S4 Learning System
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Additional Mathematics Word Problems | Worked Examples from Situations to Equations and Calculus
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Algorithms & Computing Hub | From First Principles to Professional Systems
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Algorithms Learning Roadmap | Trace, Reconstruct, Design and Evaluate
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Algorithms Quartermaster | Methods, Tools and Representations Agent
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Alicia’s First Secondary 1 Report
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Anchor Green Primary School: A Parent’s Learning Guide
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Anomaly | When Learning Behaves Differently Than Expected
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Archivist | Index, Enumeration and Orphan-Control Agent
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Arrival State | What Has Actually Arrived at the Tutorial?
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Assembly and Configuration | Putting the Right Supports Around the Learner
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Baseline Before Intervention | Marie Curie Series | What Could the Learner Do Before We Changed Anything?
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Beatrice’s PSLE Week
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Becoming a Private Tutor in Singapore | Professional, Business, Tax, Privacy and Home-Tuition Responsibilities
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Before the First Tuition Lesson in Sengkang | What Parents Should Prepare
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Biochemistry, Metabolism & Molecular Homeostasis | Cofactors, Metals, Lipids and Flux
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Biology & Living Systems | Cells, Organisms, Structure and Function
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Bridgekeeper | Cross-Fort Handoff Agent
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Cape Canaveral Series | The Learning Place Where Preparation Becomes Independent Motion
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Career & Workplace Literacy Tutor | Curie Series | Understanding How Work Systems Change
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Career Change & Reinvention Tutor | Curie Series | Moving Capability Into a New Field
Browse every published Post
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Advanced English Tutorials | How to Take Better Notes, Annotate Texts and Remember What You Read
18–26 minutes -
Advanced Additional Mathematics Tutorials | How to Know Whether A-Math Tuition Is Actually Working
5–8 minutes -
Advanced Mathematics Tutorials | Choosing Primary Mathematics Tuition in Sengkang — 12 Questions Parents Should Ask
5–7 minutes -
Advanced English Tutorials | How to Use Punctuation, Capitalisation and Sentence Boundaries Correctly
17–25 minutes -
Advanced Mathematics Tutorials | Why Primary Mathematics Homework Takes So Long — Diagnose the Minutes Before Adding More Work
4–6 minutes -
Advanced Mathematics Tutorials | Primary Mathematics Holiday Revision — Repair Weak Foundations or Get a Head Start?
4–6 minutes -
Advanced Mathematics Tutorials | PSLE Mathematics Paper 1 vs Paper 2 — How the 2026 Revised Format Changes Preparation
5–7 minutes -
Advanced Additional Mathematics Tutorials | Secondary 3 vs Secondary 4 A-Math Tuition — The Teaching Job Should Change
4–6 minutes -
Advanced Additional Mathematics Tutorials | Is A-Math Useful If You Are Not Going to JC? Polytechnic, Engineering and Technical Pathways
5–7 minutes -
Advanced Science Tutorials | Scientific Reasoning Skills for Students: Observation, Inference, Evidence and Causation
96–144 minutes -
Advanced Additional Mathematics Tutorials | When Should My Child Start A-Math Tuition? Secondary 2, 3 or 4
5–7 minutes -
Advanced Science Tutorials | Science Revision Timetable and Weekly Study Plan for Primary, PSLE and Secondary
109–164 minutes -
Advanced English Tutorials | How to Improve Creative Writing: Ideas, Plot, Character, Description and Revision
16–24 minutes -
Advanced Mathematics Tutorials | Choosing Secondary Mathematics Tuition in Sengkang — 12 Questions Parents Should Ask
6–9 minutes -
Advanced English Tutorials | How to Write Strong English Paragraphs: Topic Sentences, Evidence and Cohesion
16–24 minutes -
Advanced Science Tutorials | Science Calculations and Formulae: Units, Equations, Percentages and Problem Solving
102–153 minutes -
Advanced Mathematics Tutorials | Secondary Mathematics Calculator Discipline — Estimation, Exactness, Rounding and Input Control
4–7 minutes -
Advanced English Tutorials | How to Improve English Spelling, Word Formation and Dictation
17–25 minutes -
Advanced Mathematics Tutorials | Why Strong Secondary Mathematics Students Plateau — The Precision Problems Behind the Last Few Marks
5–7 minutes -
Advanced English Tutorials | How to Improve Reading Fluency, Speed and Stamina
17–26 minutes -
Advanced Additional Mathematics Tutorials | Hardest A-Math Topics — Why Trigonometry, Logarithms, Calculus and Mixed Questions Feel Difficult
6–9 minutes -
Advanced Science Tutorials | Accuracy, Precision and Uncertainty in Science: Error, Reliability and Validity
103–154 minutes -
Advanced Additional Mathematics Tutorials | 20 Parent Mistakes That Can Make A-Math Harder
5–8 minutes -
Advanced Additional Mathematics Tutorials | The Last 24 Hours Before an A-Math Exam — What to Do and What Not to Do
3–5 minutes -
Advanced Mathematics Tutorials | Is One Mathematics Tuition Lesson a Week Enough for Primary and PSLE?
5–7 minutes -
Advanced Mathematics Tutorials | PSLE Mathematics After Prelims — Turn the Prelim Paper Into a Final Recovery Plan
4–6 minutes -
Advanced Mathematics Tutorials | Primary 5 to Primary 6 Mathematics Transition — What Changes Under the 2026 Syllabus
4–7 minutes -
Advanced Mathematics Tutorials | When Should PSLE Mathematics Preparation Start? Primary 5 or Primary 6?
5–7 minutes -
Advanced Science Tutorials | Scientific Models for Students: Physical, Conceptual, Mathematical and Computer Models
108–162 minutes -
Advanced Additional Mathematics Tutorials | Why A-Math Homework Takes So Long — Diagnose the Minutes Before Telling Students to Work Faster
5–8 minutes -
Advanced Mathematics Tutorials | Secondary Mathematics After Prelims — Turn the Prelim Paper Into a Final Exam Recovery Plan
5–8 minutes -
Advanced Mathematics Tutorials | Is One Secondary Mathematics Tuition Lesson a Week Enough?
6–9 minutes -
Advanced Mathematics Tutorials | Secondary Mathematics Holiday Revision — Repair Weak Foundations or Get a Head Start?
5–8 minutes -
Advanced Mathematics Tutorials | How to Score A1 in G3 Mathematics — What Distinction-Level Performance Actually Requires
6–9 minutes -
Advanced Mathematics Tutorials | Secondary Mathematics Resources — School Notes vs Textbook vs Assessment Books vs Past Papers
6–8 minutes -
Advanced Science Tutorials | How to Write a Science Lab Report: Aim, Method, Results, Discussion and Conclusion
93–139 minutes -
Advanced Science Tutorials | Science Laboratory Safety Rules for Students: Hazards, Risk, PPE and Safe Practical Work
87–130 minutes -
Advanced English Tutorials | How to Write Argumentative and Discursive English With Evidence and Judgement
18–27 minutes -
Advanced Science Tutorials | Practical Science Skills: Measurement, Equipment, Observation and Laboratory Technique
106–159 minutes -
Advanced English Tutorials | How to Write Situational English for Audience, Purpose and Task Fulfilment
18–27 minutes -
Advanced Mathematics Tutorials | Private Tutor vs Small-Group Mathematics Tuition — What Parents Should Compare
5–7 minutes -
Advanced English Tutorials | How to Master Sentence Synthesis and Transformation Without Changing Meaning
17–26 minutes -
Advanced Mathematics Tutorials | Self-Study vs Mathematics Tuition — Which Support Does the Student Actually Need?
4–6 minutes -
Advanced Science Tutorials | Common Science Misconceptions: How to Find and Fix Wrong Scientific Ideas
107–160 minutes -
Advanced Mathematics Tutorials | Why Mathematics Homework Is Correct but Test Marks Still Fall
5–7 minutes -
Advanced Additional Mathematics Tutorials | A-Math After Prelims — Turn the Prelim Paper Into a Final Exam Recovery Plan
5–8 minutes -
Advanced Mathematics Tutorials | When Does My Child Need Mathematics Tuition? A Parent Diagnostic Guide
5–8 minutes -
Advanced Additional Mathematics Tutorials | A-Math Holiday Revision — Repair Weak Foundations or Get a Head Start?
4–6 minutes -
Advanced English Tutorials | How to Improve Inference, Evidence and Answer Precision
17–26 minutes -
Advanced Additional Mathematics Tutorials | Is One A-Math Tuition Lesson a Week Enough?
4–6 minutes
Routing rule: use this fallback only for discovery and orphan control. Canonical subject ownership, reader pathways and return logic continue to come from the Learning Castle, subject hubs and Complete Archives.
