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
-
PSLE Mathematics 2026 | The Syllabus as a Thinking Map
-
PSLE Mathematics 2026 | What Changed and What Students Must Adapt
-
PSLE Mathematics AL1 | Why Ten Tips Are Not Enough | Voyage to Examination Craft
-
PSLE Mathematics Preparation Sengkang | Build the System Before the Papers
-
PSLE Mathematics Sengkang | The Voyage of Water — Finding the Route
-
PSLE Science 2026 | What Students Must Adapt | Examination Craft
-
PSLE Science 2026 | What the Syllabus Requires Students to Do
-
PSLE Science AL1 | Why Ten Tips Are Not Enough | Voyage to Examination Craft
-
PSLE Science Learning Guide | Questions, Evidence, Investigations & Revision
-
PSLE Science Reality Lab | Real-World Evidence, Claims & Scientific Reasoning
-
PSLE Science Sengkang | The Voyage of Water — Evidence to Explanation
-
PSLE Science Tuition Punggol | From Reconstruction to Examination Craft
-
PSLE Science Tuition Sengkang | Use the Paper to Find the Failure
-
PSLE Sengkang | The Voyage — The Final Primary Port
-
Punggol Primary 1 English Tuition | Build Strong Literacy Foundations with eduKate
-
Punggol Primary 2 English Tuition | Strengthen Early Foundations with eduKate
-
Punggol Primary 3 English Tuition | Strengthening Foundations with eduKate
-
Punggol Primary 3 Science | Local Entry to Observation & Evidence
-
Punggol Primary 4 English Tuition | Build Strong Foundations with eduKateSengkang
-
Punggol Primary 4 Science | Local Entry to Relationships & Evidence
-
Punggol Primary 5 English Tuition | Local Entry to the PSLE Runway
-
Punggol Primary 6 English Tuition | Local Entry to PSLE Examination Craft
-
Punggol Primary 6 Science | Local Entry to PSLE Reconstruction
-
Questions to Ask a Tuition Centre Before Enrolling | Sengkang Parent Checklist
-
Reading the Question: The Eight Words That Change What Is Being Asked
-
Receipt | What Comes Back After the Tutorial?
-
Recovery After a Failed Route | Marie Curie Series | What Happens When the First Method Does Not Work?
-
Release | When the Tutorial Lets the Learner Carry the Next Move
-
Representation Shift | Marie Curie Series | Can the Learner Move Between Words, Diagrams, Symbols and Models?
-
Retirement Transition Tutor | Curie Series | From Work-Organised Life to Self-Organised Life
-
Retrieval Stability | Marie Curie Series | Why Learning Must Survive Time
-
Return Warden | Ownership and Capability Return Agent
-
Return-to-Learning Tutor | Curie Series | Becoming a Structured Learner Again
-
Return-to-Work Tutor | Curie Series | Re-Entering Employment After a Career Break
-
Rivervale Primary School: A Parent’s Learning Guide
-
Route Selection | Marie Curie Series | How Learners Choose What to Do Before They Execute
-
Runtime Steward | MindOS, Bolt and Student Interface Agent
-
Schoolwork or Foundation Repair: Which Should Tuition Do First?
-
Science by Level | From Year 0 to Research & Professional Science
-
Science Checking by Question Type | MCQ, Open-Ended, Graphs and Experiments
-
Science Checking Routine | Five Checks and a 60-Second Exam Review
-
Science Connection Map | Spider, Web, Hidden and Deep Connections
-
Science Explanation, Transfer & Examination Craft | From Knowing to Performing
-
Science Fort Steward | Observation, Models and Evidence Agent
-
Science Hub | A Question Worth Following | eduKate Sengkang
-
Science Tutor Punggol | Local Entry to P3–P6 Primary Science
-
Science Tutor Sengkang | See the First Weak Link in P3–P6 Science
-
Science Tutor | Curie Series | Seeing How Scientific Thinking Changes
-
Scientific Instrumentation, Imaging & Measurement | How Research Sees and Tests the World
-
Scientific Method, Evidence & Measurement | How Science Knows
Browse every published Post
-
What is PG2 for Secondary Schools | Sec 2 English
6–9 minutes -
Learning G1 Science with Ang Mo Kio Tutor
20–30 minutes -
Learning G1 A-Math with Ang Mo Kio Tutor
20–30 minutes -
Learning G1 Mathematics with Ang Mo Kio Tutor
20–30 minutes -
Learning G1 English with Ang Mo Kio Tutor
20–30 minutes -
Learning G3 Science with Ang Mo Kio Tutor
20–30 minutes -
Learning G3 A-Math with Ang Mo Kio Tutor
20–30 minutes -
Learning G3 Mathematics with Ang Mo Kio Tutor
20–30 minutes -
Learning G3 English with Ang Mo Kio Tutor
20–30 minutes -
What is PG1 for Secondary Schools | Sec 2 English
5–8 minutes -
What is G3 for Secondary Schools | Sec 2 English
6–9 minutes -
What is G2 for Secondary Schools | Sec 2 English
5–8 minutes -
What is G1 for Secondary Schools | Sec 2 English
6–10 minutes -
Learning G2 Science with Ang Mo Kio Tutor
20–30 minutes -
Learning G2 A-Math with Ang Mo Kio Tutor
20–29 minutes -
Learning G2 Mathematics with Ang Mo Kio Tutor
23–35 minutes -
Learning G2 English with Ang Mo Kio Tutor
24–36 minutes -
What is PG3 for Secondary Schools | Sec 1 Science
7–10 minutes -
What is PG2 for Secondary Schools | Sec 1 Science
7–11 minutes -
What is PG1 for Secondary Schools | Sec 1 Science
6–9 minutes -
What is G3 for Secondary Schools | Sec 1 Science
9–13 minutes -
Learning G1 Science with Woodlands Tutor
21–31 minutes -
Learning G1 A-Math with Woodlands Tutor
21–32 minutes -
Learning G1 Mathematics with Woodlands Tutor
21–32 minutes -
Learning G1 English with Woodlands Tutor
21–31 minutes -
What is G2 for Secondary Schools | Sec 1 Science
6–9 minutes -
What is G1 for Secondary Schools | Sec 1 Science
7–10 minutes -
What is PG3 for Secondary Schools | Sec 1 Mathematics
5–7 minutes -
What is PG2 for Secondary Schools | Sec 1 Mathematics
6–9 minutes -
Learning G3 Science with Woodlands Tutor
22–33 minutes -
Learning G3 A-Math with Woodlands Tutor
22–33 minutes -
Learning G3 Mathematics with Woodlands Tutor
22–33 minutes -
Learning G3 English with Woodlands Tutor
23–35 minutes -
How to Perform in the new G3 SEC Examinations | Learner’s Guide Vol 0073 | EMS Assumption Audit Workshop — Given, Derived, Inferred and Merely Assumed
19–29 minutes -
How to Perform in the new G3 SEC Examinations | Learner’s Guide Vol 0072 | Science: Measurement Uncertainty and Anomalies Workshop — Resolution, Repeats and Defensible Conclusions
17–25 minutes -
How to Perform in the new G3 SEC Examinations | Learner’s Guide Vol 0071 | Mathematics: Constraints and Feasibility Workshop — Inequalities, Domains, Bounds and Integer Decisions
18–27 minutes -
Learning G2 Science with Woodlands Tutor
19–29 minutes -
Learning G2 A-Math with Woodlands Tutor
19–29 minutes -
Learning G2 Mathematics with Woodlands Tutor
19–29 minutes -
Learning G2 English with Woodlands Tutor
19–29 minutes -
What is PG1 for Secondary Schools | Sec 1 Mathematics
6–9 minutes -
What is G3 for Secondary Schools | Sec 1 Mathematics
7–11 minutes -
How to Perform in the new G3 SEC Examinations | Learner’s Guide Vol 0070 | English: Rhetorical Function Workshop — Claim, Evidence, Example, Concession and Call to Action
17–25 minutes -
Learning G1 Science with Bishan Tutor
19–29 minutes -
Learning G1 A-Math with Bishan Tutor
19–29 minutes -
Learning G1 Mathematics with Bishan Tutor
19–29 minutes -
Learning G1 English with Bishan Tutor
19–29 minutes -
What is G2 for Secondary Schools | Sec 1 Mathematics
9–13 minutes -
What is G1 for Secondary Schools | Sec 1 Mathematics
9–14 minutes -
Learning G3 Science with Bishan Tutor
20–30 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.
