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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MindOS Learning Manual: Attention State | Looking at the Page Is Not the Same as Attending
7–10 minutes -
MindOS Learning Manual: Scaffold Fading State | Help Is Successful When It Can Disappear
6–10 minutes -
MindOS Learning Manual: Worked Example State | Seeing a Solution Is Not the Same as Learning the Route
5–8 minutes -
MindOS Learning Manual: Interleaving State | Practice Should Not Always Tell You Which Method to Use
5–8 minutes -
MindOS Learning Manual: Spacing State | One Long Study Session Is Not the Same as Learning Over Time
5–8 minutes -
MindOS Learning Manual: Feedback State | “Wrong” Is Not a Repair Instruction
6–8 minutes -
MindOS Learning Manual: Transfer State | Perfect Practice Does Not Mean You Can Solve a New Problem
5–8 minutes -
MindOS Learning Manual: Strategy Selection | Knowing Five Methods Is Not Knowing Which Method to Use
5–7 minutes -
MindOS Learning Manual: Representation State | Can You See the Same Idea Another Way?
6–8 minutes -
MindOS Learning Manual: The AI Assistance Gradient | When Help Becomes Substitution
10–15 minutes -
MindOS Learning Manual: Retrieval State | Familiarity Is Not Availability
8–12 minutes -
MindOS Learning Manual: Working Memory Load | Why a Student Can Know Every Step and Still Lose the Problem
9–13 minutes -
MindOS Learning Manual: The Study Runtime | What Should a Learner Do Next?
9–14 minutes -
Problems | Education | Reflective | A Corrected Answer Is Not Necessarily a Repaired Mistake
7–11 minutes -
Problems | Education | Reflective | The Mark Arrives After the Problem
8–11 minutes -
Problems | Education | Reflective | More Work Is Not Always More Learning
7–10 minutes -
Problems | Education | Reflective | Sometimes We Move the Goalpost Too Quickly
7–11 minutes -
Problems | Education | Reflective | Slow Is Not a Diagnosis
7–10 minutes -
Problems | Education | Reflective | Sometimes We Are Looking at Different Versions of the Same Child
7–11 minutes -
Problems | Education | Reflective | Knowing It Yesterday Is Not the Same as Having It Today
6–9 minutes -
Problems | Education | Reflective | Sometimes the Student Is Not Stuck. They Are Waiting.
7–10 minutes -
Problems | Education | Reflective | A Good Lesson Should Leave Evidence
7–11 minutes -
Problems | Education | Reflective | A Child Does Not Need Help Everywhere
7–10 minutes -
What is Education | What Is Education’s Reason for Existence?
6–8 minutes -
What is Education | What If Education Was Removed?
8–12 minutes -
What is Education | Every Child Arrives Late
10–16 minutes -
What Is Education?
6–10 minutes -
Examination Craft | The Missing Subject
8–12 minutes -
Examination Craft | How to Survive a Paper
9–13 minutes -
Examination Craft | How to Survive the Season
10–15 minutes -
Rebirth
9–14 minutes -
Life After Death
10–14 minutes -
The Cycle of Education
8–12 minutes -
The Tutor Is in The Construction Business
10–15 minutes -
Problems | Education | Reflective | Learning Skills Are Abstract But Buildable
24–36 minutes -
Problems | Education | Reflective | Knowing Our Jobs
12–17 minutes -
Problems | Education | Reflective | The Problem Becomes the Lesson
9–14 minutes -
Problems | Education | Reflective | The Invisible Education
7–10 minutes -
Problems | Education | Reflective | Is Tuition Really Too Taxing?
10–15 minutes -
Problems | Education | Reflective | The Oddity of Giving One Lesson to Three Students
10–15 minutes -
Problems | Education | Reflective | Preparing for Examinations: Why Studying Skills Need to Change
9–13 minutes -
Problems | Education | Reflective | Students Say More When They Say Less
11–16 minutes -
Problems | Education | Reflective | Schools Versus Education
9–14 minutes -
Problems | Education | Reflective | How We Think Tutoring Might Be On The Wrong Track
12–18 minutes -
Problems | Education | Reflective | How Solutions Sometimes Aren’t Enough
8–13 minutes -
Problems | Education | Reflective | Why Tuition
8–12 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.
