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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How Sampling and Representativeness Shape Scientific Conclusions | Science Tuition Sengkang
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How Scaffolding Works in Learning | Help That Builds the Learner and Then Steps Away
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How Scale Factors Change Length Area and Volume in Mathematics | Mathematics Learning Guide
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How Schema Formation Works in Learning | From Separate Facts to Organised Knowledge
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How Science Answers Move From Observation to Evidence to Explanation | Science Tuition Sengkang
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How Scientific Evidence Works | From Observation to a Claim You Can Defend
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How Scientific Experiments Work | From a Testable Question to Evidence You Can Trust
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How Scientific Explanation Works | Connecting Evidence, Mechanism and Conclusion
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How Scientific Explanations Change When New Evidence Appears | Science Tuition Sengkang
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How Scientific Measurement Becomes Evidence | Units, Precision and Repeatability | Science Tuition Sengkang
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How Scientific Predictions Grow From Patterns, Evidence and Mechanisms | Science Tuition Sengkang
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How Scientific Vocabulary Becomes Precise Meaning | Science Tuition Sengkang
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How Secondary 1 Mathematics Tuition Builds Learning Continuity
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How Self-Directed Studying Works | Building a Learner Who Can Choose, Check and Continue
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How Self-Explanation Works in Learning | Explaining the Links, Exposing Gaps and Building a Usable Model
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How Sentence Fragments, Run-Ons and Comma Splices Break Clause Boundaries | English Tuition Sengkang
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How Sentence Openings, Fronting and End-Focus Control Information Flow | English Tuition Sengkang
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How Sentence Variety Controls Pace, Emphasis and Clarity | English Tuition Sengkang
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How Should Parents Read One Bad Test?
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How Should Parents Read One Good Test?
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How Should Parents Use School-Teacher Feedback?
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How Should School, Tuition and Home Divide the Work?
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How Singapore Education Works | The Voyage Series
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How Situational Writing Works | Purpose, Audience and Task | English Tuition Sengkang
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How Skill Acquisition Works | From Slow Rule-Following to Reliable, Adaptive Performance
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How Sleep Works in Learning | Attention, Memory, Recovery and the Hidden Cost of Late-Night Study
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How Small Input Changes Create Large or Small Mathematical Effects | Mathematics Tuition Sengkang
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How Spacing Works in Learning | Why Returning Later Changes What the Brain Has to Do
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How Speech Acts Turn Sentences Into Requests, Promises, Warnings and Commands | English Tuition Sengkang
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How Spelling and Word Formation Build English Control | English Tuition Sengkang
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How Statistics, Percentages and Averages Can Strengthen—or Distort—an Argument | English Tuition Sengkang
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How Students Compare Competing Scientific Explanations Against Evidence | Science Tuition Sengkang
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How Students Connect Structure to Function in Science | Science Tuition Sengkang
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How Students Decide Whether a Mathematical Solution Is Unique | Mathematics Tuition Sengkang
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How Students Decode English Questions Before Answering | English Tuition Sengkang
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How Students Decompose Complex Mathematics Problems Into Smaller Parts | Mathematics Tuition Sengkang
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How Students Detect Ambiguity and Repair Unclear Meaning | English Tuition Sengkang
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How Students Distinguish Absolute and Relative Change in Mathematics | Mathematics Learning Guide
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How Students Distinguish Additive and Multiplicative Change in Mathematics | Mathematics Learning Guide
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How Students Distinguish Direct and Indirect Evidence in Science | Science Tuition Sengkang
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How Students Distinguish Discrete and Continuous Quantities in Mathematics | Mathematics Tuition Sengkang
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How Students Distinguish Properties From Processes in Science | Science Tuition Sengkang
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How Students Distinguish Rate From Total Amount in Mathematics | Mathematics Tuition Sengkang
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How Students Distinguish Systematic and Random Error in Science | Science Tuition Sengkang
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How Students Judge Scientific Uncertainty, Limits and Confidence | Science Tuition Sengkang
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How Students Judge Source Credibility, Reliability and Bias | English Tuition Sengkang
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How Students Judge Whether Evidence Is Relevant and Sufficient | English Tuition Sengkang
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How Students Learn to Ask Testable Scientific Questions | Science Tuition Sengkang
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How Students Learn to Choose Mathematics Strategies Instead of Guessing Methods | Mathematics Tuition Sengkang
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How Students Learn to Generalise Patterns Into Algebraic Rules | Mathematics Tuition Sengkang
Browse every published Post
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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.
