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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Observation vs Inference vs Conclusion | Science Learning Guide
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Observed, Inferred, Unknown | Marie Curie Series | How to Read Learning Evidence Carefully
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Palm View Primary School: A Parent’s Learning Guide
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Parenthood Tutor | Curie Series | Learning to Support a Growing Person
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Parents’ Guide to eduKate Sengkang | What Would Help Your Family Next?
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Pei Hwa Secondary School: A Parent’s Learning Guide
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Percentage Practice | Choose the Base, Check Again Later
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Personalised Mathematics Tuition Sengkang | Same Topic, Different Weak Link
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Personalized Additional Mathematics Tuition in Punggol | Diagnose, Repair and Advance
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Physics | Energy, Forces, Electricity, Light, Sound and Waves
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Physiology, Neuroscience & Mechanobiology | Signals, Forces, Tissues and Organ Systems
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Plant Science & Photosynthesis | Chloroplasts, Nutrients, Transport and Plant Decisions
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Portcullis Guard | Hard Stops and Protected Boundaries Agent
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Post-Secondary English Tutor | Curie Series | Language Across JC, Polytechnic and ITE
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Post-Secondary Mathematics Tutor | Curie Series | Mathematics Across JC, Polytechnic and ITE
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Post-Secondary Science Tutor | Curie Series | Science Across JC, Polytechnic and ITE
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Praise That Helps and Praise That Hurts
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Prediction Before Feedback | Marie Curie Series | What Does the Learner Expect Before Seeing the Answer?
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Primary 1 Discovery Science Sengkang | Before Formal Science Begins
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Primary 1 Discovery Science Sengkang | Observe, Compare & Ask Why
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Primary 1 English Learning Guide | Beginning Reading: Phonics, Word Recognition, Fluency and Meaning
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Primary 1 English Learning Guide | Cause and Effect in Reading: Why Things Happen, Results, Because, So and Evidence
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Primary 1 English Learning Guide | Central Message and Lesson: Topic, Character Choice, Consequence, Change and Evidence
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Primary 1 English Learning Guide | Collaborative Discussion: Turn-Taking, Clarification, Building on Ideas and Respectful Disagreement
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Primary 1 English Learning Guide | Comparing Stories and Characters: Similarities, Differences, Adventures, Responses and Evidence
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Primary 1 English Learning Guide | Comparing Two Texts: Similarities, Differences, Purpose and Evidence
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Primary 1 English Learning Guide | Comprehension Cloze: Cohesion, Context and Whole-Text Meaning
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Primary 1 English Learning Guide | Context Clues for Unknown Words: Pictures, Sentences, Definitions, Examples and Meaning Checks
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Primary 1 English Learning Guide | Descriptive Writing: Observation, Sensory Detail, Precise Nouns, Verbs and Comparison
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Primary 1 English Learning Guide | Dialogue and Punctuation: Speech, Reporting Clauses, Voice and Meaning
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Primary 1 English Learning Guide | Email and Digital Message Writing: Purpose, Audience, Subject, Tone and Complete Information
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Primary 1 English Learning Guide | Error Analysis, Self-Correction, Retrieval and Transfer
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Primary 1 English Learning Guide | Explanatory Writing: How, Why, Cause, Process and Precision
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Primary 1 English Learning Guide | Fact, Opinion, Inference and Evidence
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Primary 1 English Learning Guide | Fiction and Nonfiction: Story, Information, Purpose, Structure, Evidence and Reading Routes
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Primary 1 English Learning Guide | Figurative and Idiomatic Meaning in Context: Comparison, Simile, Personification and Common Idioms
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Primary 1 English Learning Guide | Functional Writing: Notes, Messages, Instructions and Everyday Information
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Primary 1 English Learning Guide | Grammar and Editing: Agreement, Tense, Pronouns, Connectors and Sentence Boundaries
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Primary 1 English Learning Guide | Independent Reading: Book Choice, Response and Building a Reading Life
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Primary 1 English Learning Guide | Independent Study Routines for English: Retrieval, Spacing, Error Return, Transfer and Planning
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Primary 1 English Learning Guide | Information Synthesis Across Text and Visual Sources: Main Idea, Evidence and Integration
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Primary 1 English Learning Guide | Learning Habits, Self-Correction and the Primary 2 Bridge
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Primary 1 English Learning Guide | Listening Comprehension: Main Ideas, Details, Sequence and Change
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Primary 1 English Learning Guide | Listening, Speaking and Early Writing
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Primary 1 English Learning Guide | Main Topic and Key Details: What the Text Is Mostly About, Important Facts and Summary
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Primary 1 English Learning Guide | Narrative Writing: Character, Choice, Consequence and Pacing
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Primary 1 English Learning Guide | Nonfiction and Informational Reading: Main Idea, Structure, Comparison and Evidence
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Primary 1 English Learning Guide | Nonfiction Text Features and Navigation: Headings, Contents, Captions, Labels, Bold Print, Icons and Menus
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Primary 1 English Learning Guide | Opinion Writing: Claim, Reasons, Examples, Audience and Revision
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Primary 1 English Learning Guide | Oral Communication: Reading Aloud, Conversation, Idea Development and Recovery
Browse every published Post
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Learning G3 A-Math with Bishan Tutor
20–30 minutes -
Learning G3 Mathematics with Bishan Tutor
21–31 minutes -
Learning G3 English with Bishan Tutor
22–33 minutes -
What is PG3 for Secondary Schools | Sec 1 English
8–11 minutes -
What is PG2 for Secondary Schools | Sec 1 English
9–13 minutes -
Learning G2 Science with Bishan Tutor
22–33 minutes -
Learning G2 A-Math with Bishan Tutor
22–33 minutes -
What is PG1 for Secondary Schools | Sec 1 English
11–17 minutes -
Learning G2 Mathematics with Bishan Tutor
22–33 minutes -
Learning G2 English with Bishan Tutor
22–33 minutes -
What is G3 for Secondary Schools | Sec 1 English
13–20 minutes -
What is G2 for Secondary Schools | Sec 1 English
14–21 minutes -
What is G1 for Secondary Schools | Sec 1 English
13–20 minutes -
How to Perform in PSLE | Learner’s Guide Vol 0076 | Keep the Definition Fixed — Do Not Let the Same Word Change Meaning Midway
24–37 minutes -
How to Perform in PSLE | Learner’s Guide Vol 0075 | Science: Being Near a Substance Does Not Prove It Entered the Organism
25–38 minutes -
How to Perform in PSLE | Learner’s Guide Vol 0074 | Mathematics: Before You Compare Fractions or Percentages, Check Whether the Wholes Are the Same
21–32 minutes -
How to Perform in PSLE | Learner’s Guide Vol 0073 | English: Rebuild the Event Timeline When the Passage Tells the Story Out of Order
23–34 minutes -
Return to Normal Learning Casebook | Know When to Stop Repairing and Move Forward
147–220 minutes -
Learning Evidence Portfolio | Build a Record of What You Can Actually Do
143–214 minutes -
Learning Stability Casebook | Know When a Repair Has Become Reliable
142–214 minutes -
Learning Priority Casebook | Choose What to Study Next From Evidence, Not Panic
143–214 minutes -
Cross-Subject Inquiry Casebook | Connect Science, Mathematics and English Without Losing the Learning
148–221 minutes -
Evidence and Claims Casebook | From Observation and Data to a Defensible Conclusion
146–219 minutes -
Measurement Casebook for Student Inquiry | From Quantity to Trustworthy Evidence
144–216 minutes -
Student Inquiry Casebook | Turn a Real-World Question Into a Testable Learning Project
144–217 minutes -
Group Project to Individual Capability Casebook | Prove What You Can Do Without the Team
95–142 minutes -
Laboratory Practical Assessment Casebook | Observation, Measurement, Decision and Recovery
94–141 minutes -
University Oral Examination and Viva Casebook | Defend Reasoning Under Live Questions
93–140 minutes -
University Open-Book Examination Casebook | Find, Apply, Verify and Finish Under Time
42–64 minutes -
How to Prepare for an Open-Book University Examination | Find, Apply, Verify and Finish
42–62 minutes -
Primary 5 English Learning Guide | Question Demand and Answer Form Control: Read the Task Before You Write
54–81 minutes -
How to Perform in PSLE | Learner’s Guide Vol 0072 | When Two Answers Both Look Plausible, Find the Constraint That Makes Only One Legal
27–40 minutes -
How to Perform in PSLE | Learner’s Guide Vol 0071 | Science: Separate Stimulus, Sense Organ and Response Before You Explain the Chain
21–32 minutes -
How to Perform in PSLE | Learner’s Guide Vol 0070 | Mathematics: Keep Every “Per” Attached to the Quantity It Is Dividing By
20–30 minutes -
How to Perform in PSLE | Learner’s Guide Vol 0069 | English: Know When Two Noun Phrases Name the Same Person, Place or Thing
22–33 minutes -
PSLE Science Reality Lab Vol No.274 | “Water Quality Index = 85” — Is the Water 85% Clean?
14–21 minutes -
The Tutor Handbook Vol No.0027 | The Confirmation — How a Tutor Tests Whether a Breakthrough Has Become the Learner’s New Normal
8–12 minutes -
Advanced Mathematics Tutorials | Siblings in the Same Mathematics Tuition System — Same Tutor, Same Class, or Separate Support?
27–41 minutes -
Advanced Mathematics Tutorials | Should Students Message Their Mathematics Tutor Between Lessons? Use Support Without Creating Dependence
42–63 minutes -
Advanced Mathematics Tutorials | Should Parents Sit In a Mathematics Tuition Lesson? Observation Without Distorting the Learning
42–63 minutes -
Advanced Mathematics Tutorials | Changing School Mid-Year — How Mathematics Tuition Maps the New Sequence Without Restarting
39–58 minutes -
Advanced Mathematics Tutorials | When the School Mathematics Teacher Changes Mid-Year — Keep the Learner Stable While Methods, Pace and Homework Change
42–63 minutes -
G2 SEC Learner’s Guide Master Index | Complete Series
3–5 minutes -
G2 SEC Earlier Volumes Index | Vol 0001–0131
14–21 minutes -
G2 SEC Learner’s Guide Hub | Vol 0132–0175 | Examination Performance, English, Mathematics and Science
6–9 minutes -
How to Perform in the new G2 SEC Examinations | Learner’s Guide Vol 0175 | Science: Cross-Method Measurement Agreement — Check an Important Quantity by a Second Valid Route
21–32 minutes -
How to Perform in the new G2 SEC Examinations | Learner’s Guide Vol 0174 | Mathematics: Sandwich Bounds — Trap the Answer Between a Lower and Upper Limit Before You Trust It
23–35 minutes -
How to Perform in the new G2 SEC Examinations | Learner’s Guide Vol 0173 | English: Deixis Control — Resolve Who Is I, Where Is Here and When Is Now
23–35 minutes -
How to Perform in the new G2 SEC Examinations | Learner’s Guide Vol 0172 | Handoff Contracts — Pass the Right Information From One Reasoning Step to the Next
22–34 minutes -
How to Perform in the new G2 SEC Examinations | Learner’s Guide Vol 0171 | Science: Manipulation Checks — Verify That the Independent Variable Actually Changed
23–34 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.
