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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The Complete Sengkang Guide (2026): Food, Things to Do, Schools, Transport, Housing and What’s Next
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The Contrast Test | Marie Curie Series | Can the Learner Tell Similar Ideas Apart?
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The Darwin Series | Why Learning Has to Evolve
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The Discriminating Test | Marie Curie Series | Which Small Test Separates Competing Explanations?
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The Evidence Loop | Marie Curie Series | How We Know Learning Changed
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The Examination-Ready Learner: What Still Goes Wrong on the Day
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The Forward–Reverse Test | Marie Curie Series | Can the Learner Reason Both Ways Without Assuming Both Directions Are Equivalent?
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The Fragile Learner: Right Today, Wrong Tomorrow
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The Generalisation Test | Marie Curie Series | Can the Learner Extend an Idea Without Overextending It?
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The Goal of Tuition | Building a Learner Who Needs Less Help Over Time
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The Independent Start | Marie Curie Series | What Happens Before the First Prompt
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The Last Two Weeks Before PSLE: A Day-by-Day Plan
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The Last Two Weeks Before SEC: A Day-by-Day Plan
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The Launch Window | Readiness Depends on Capability and Conditions
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The Marie Curie Series | Making Invisible Learning Visible
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The Measurement Effect | Marie Curie Series | When Testing Changes What We Are Trying to See
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The Mistake Log That Actually Reduces Repeats
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The Pressure Test | Marie Curie Series | What Changes When Time, Stakes and Interference Rise
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The Reference Condition | Marie Curie Series | What Are We Comparing This Learning Result Against?
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The Repeatability Test | Marie Curie Series | Does the Capability Reappear Under Equivalent Conditions?
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The Resolution Limit | Marie Curie Series | How Fine a Learning Difference Can Our Evidence Actually See?
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The Robustness Test | Marie Curie Series | Does the Capability Survive Harmless Variation?
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The Sampling Window | Marie Curie Series | Have We Seen Enough of the Capability to Generalise?
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The School Says ‘Good Effort’ but the Marks Say Otherwise
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The Spaceport | Why the Learning Environment Is Part of the System
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The Stable Learner: Reliable on the Familiar, Stuck on the New
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The Stopping Rule | Marie Curie Series | When Do We Know Enough to Act Without Testing Forever?
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The Transfer Test | Marie Curie Series | What Happens When the Question Changes Shape
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The Transfer-Ready Learner: When to Change the Conditions
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The Tutor Handbook
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The Tutor System | How Parents, Students and Tutors Work Together
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The Voyage of Water | English, Mathematics & Science from Primary 1 to Secondary 4
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The Voyage Series | English, Mathematics and Science Connections
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Time Budget for PSLE English: Paper by Paper, Minute by Minute
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Time Budget for PSLE Maths: Paper 1 and Paper 2
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Time Budget for PSLE Science: Booklet A and Booklet B
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Time Budget for SEC English: G1, G2 and G3 Papers
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Tower Clear | The Moment Control Begins to Transfer
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Tuition Enquiry Process in Sengkang | What Happens Next After You Contact eduKate
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Tuition in Sengkang: What Is Near Compass One, Sengkang MRT and Buangkok, and How to Compare It
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Tutor | The Marie Curie Series | The Student Learning Dashboard
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Tutorial | The Marie Curie Series | The Learning Room Where Evidence Appears
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Umbilicals | The Supports That Must Eventually Disconnect
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University English Tutor | Curie Series | Academic Reading, Writing and Disciplinary Independence
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University Mathematics Tutor | Curie Series | Proof, Modelling and Disciplinary Independence
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University Science Tutor | Curie Series | Evidence, Literature, Method and Scientific Self-Correction
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University, Research & Professional Science | From Literature to Scientific Judgement
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Veterinary Science | Animal Health, Evidence, Welfare and One Health
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Voyage Series
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Watchtower Agent | Estate Drift and Change Observer
Browse every published Post
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How Misconception Repair Works in Teaching | Surface the Wrong Model, Build a Better One and Prove the Old Idea No Longer Wins
34–51 minutes -
How Feedback Works in Teaching | Turning Evidence Into a Better Next Attempt Without Replacing the Learner’s Thinking
50–75 minutes -
How to Improve Learning From Mistakes | Diagnose the Error, Repair the Cause and Prove the Fix
22–33 minutes -
Top 10 Writing Skills Worth Learning
12–18 minutes -
How to Improve Learning From Feedback | Turn Teacher Comments Into Better Work
27–40 minutes -
The Tutor Handbook Vol No.0062 | The Receiving Check — How a New Tutor Verifies an Inherited Learning Route Before Changing It
24–36 minutes -
The Tutor Handbook Vol No.0061 | The Continuity Packet — How a Tutor Hands a Learning Route to Another Tutor Without Resetting the Learner
25–38 minutes -
The Tutor Handbook Vol No.0060 | The Decommission — How a Tutor Retires an Old Learning Route After Cutover Without Losing Recovery Knowledge
26–39 minutes -
The Tutor Handbook Vol No.0059 | The Cutover — How a Tutor Moves a Rebuilt Learning Route Into Normal Practice Without Running Two Systems Forever
28–41 minutes -
The Tutor Handbook Vol No.0058 | The Rebuild — How a Tutor Designs the Next Learning Route After Recovery Without Repeating the Failed Change
29–43 minutes -
How Guided Practice Works in Teaching | Shared Responsibility, Scaffolding, Feedback and the Route to Independence
25–38 minutes -
Top 10 Reading Skills Worth Learning
12–18 minutes -
The Tutor Handbook Vol No.0057 | The Recovery Check — How a Tutor Verifies That Rollback Restored Stable Learning Before Rebuilding Forward
27–40 minutes -
The Tutor Handbook Vol No.0056 | The Rollback — How a Tutor Returns to the Last Stable Learning Route Without Erasing What the Failed Change Taught
28–41 minutes -
The Tutor Handbook Vol No.0055 | The Temporary Override — How a Tutor Makes a Necessary Exception Without Letting the Exception Become the New Standard
30–46 minutes -
The Tutor Handbook Vol No.0054 | The Drift Check — How a Tutor Detects When an Adopted Learning Routine Quietly Stops Being the Routine That Was Chosen
31–46 minutes -
The Tutor Handbook Vol No.0053 | The Adoption Gate — How a Tutor Decides When a Successful Trial Deserves to Become Standard Practice
27–41 minutes -
The Tutor Handbook Vol No.0052 | The Trial Run — How a Tutor Tests a New Learning Route Before Making It the New Normal
31–46 minutes -
The Tutor Handbook Vol No.0051 | The Intervention Cost — How a Tutor Checks Whether a Helpful Fix Is Quietly Creating a New Learning Problem
25–38 minutes -
The Tutor Handbook Vol No.0050 | The Decision Record — How a Tutor Preserves Why a Learning Route Changed Before Hindsight Rewrites the Story
28–41 minutes -
The Tutor Handbook Vol No.0049 | The Learning Claim — How a Tutor Says Only What the Evidence Can Support About Progress, Mastery and Cause
30–45 minutes -
The Tutor Handbook Vol No.0048 | The Scope Boundary — How a Tutor Knows What to Teach, What to Coordinate and What Must Leave Tuition
26–39 minutes -
The Tutor Handbook Vol No.0047 | The Learning Budget — How a Tutor Allocates Time, Attention and Practice Without Trying to Fix Everything at Once
23–35 minutes -
The Tutor Handbook Vol No.0046 | The Stability Window — How a Tutor Holds a New Route Steady Long Enough to Learn From It
30–45 minutes -
The Tutor Handbook Vol No.0045 | The Re-Entry Review — How a Tutor Decides Whether Temporary Support Should Continue, Change, Shrink or End
42–63 minutes -
The Tutor Handbook Vol No.0044 | The Re-Entry Plan — How a Tutor Builds a Temporary Support Route With the Exit Designed From Day One
32–48 minutes -
The Tutor Handbook Vol No.0043 | The Re-Entry Gate — How a Tutor Decides When a Post-Release Signal Justifies Structured Intervention Again
29–43 minutes -
The Tutor Handbook Vol No.0042 | The Check-In — How a Tutor Reviews a Released Learner Without Quietly Rebuilding the Old Dependence
29–44 minutes -
The Tutor Handbook Vol No.0041 | The Release — How a Tutor Decides When Routine Intervention Can End Without Mistaking Less Tuition for Less Learning
31–47 minutes -
The Tutor Handbook Vol No.0040 | The Independence Test — How a Tutor Distinguishes Temporary Unsupported Success From Stable Self-Regulation
33–50 minutes -
The Tutor Handbook Vol No.0039 | The Fade — How a Tutor Removes Support Without Making Independent Performance Collapse
30–46 minutes -
The Tutor Handbook Vol No.0038 | The Dose — How a Tutor Calibrates How Much Help to Give Before Support Starts Replacing Learning
33–50 minutes -
PSLE Science Reality Lab Vol No.021 | “The Picture Is Twice as Big” — Does a Bigger Icon Mean a Bigger Scientific Effect?
8–11 minutes -
PSLE Science Reality Lab Vol No.020 | “The Company Paid for the Study” — Does Funding Decide Whether the Result Is True?
8–11 minutes -
PSLE Science Reality Lab Vol No.019 | “Recyclable” — Recyclable Where, and What Has to Happen After the Bin?
8–12 minutes -
PSLE Science Reality Lab Vol No.018 | “Certified” — What Exactly Was Checked, and What Was Not?
8–13 minutes -
The Tutor Handbook Vol No.0037 | The Branch Point — How a Tutor Chooses the Smallest Intervention After the Cause Has Been Separated
28–42 minutes -
PSLE Science Reality Lab Vol No.017 | “More Foam Means Better Cleaning” — Does the Visible Sign Measure the Outcome We Care About?
8–12 minutes -
PSLE Science Reality Lab Vol No.016 | “The Simulation Shows It” — Is a Model Prediction the Same as an Observation?
7–10 minutes -
PSLE Science Reality Lab Vol No.015 | “Waterproof” — Waterproof for How Deep, How Long and Under What Conditions?
6–9 minutes -
PSLE Science Reality Lab Vol No.014 | “Up to 70% Better” — Is the Best Result the Typical Result?
6–9 minutes -
The Tutor Handbook Vol No.0036 | The Differential — How a Tutor Separates Old Cause, New Cause and Mixed Cause Before Choosing the Next Intervention
27–41 minutes -
PSLE Science Reality Lab Vol No.013 | “Energy-Saving” — Were Both Devices Doing the Same Job?
5–7 minutes -
PSLE Science Reality Lab Vol No.012 | “Biodegradable” — Under What Conditions, and How Long Does It Take?
5–7 minutes -
PSLE Science Reality Lab Vol No.011 | “No Germs Detected” — Does That Mean There Were None?
5–7 minutes -
PSLE Science Reality Lab Vol No.010 | “Lab Tested” — Does the Result Still Hold Outside the Laboratory?
6–9 minutes -
The Tutor Handbook Vol No.0035 | The Fresh Look — How a Tutor Reuses Old Learning History Without Mistaking Similar Symptoms for the Same Cause
31–46 minutes -
PSLE Science Reality Lab Vol No.009 | “Every Trial Worked” — Were the Failed Trials Left Out?
7–11 minutes -
PSLE Science Reality Lab Vol No.008 | “Three Websites Say the Same Thing” — Is That Three Pieces of Evidence?
7–11 minutes -
PSLE Science Reality Lab Vol No.007 | “Look How Much It Improved” — What Happens If the Time Window Changes?
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.
