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
2756 results found
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Primary 4 Mathematics Tuition Sengkang | Upper Primary Problem Solving & Models
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Primary 4 Mathematics Tutor | Curie Series | Fractions, Decimals and Deliberate Strategy Choice
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Primary 4 Mathematics | The Upper-Primary Straddle Year | Darwin × Voyage
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Primary 4 Science Learning Guide | Acting on Feedback, Feedforward and the Next Repair
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Primary 4 Science Learning Guide | Alternative Explanations, Contradictions and Anomalies
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Primary 4 Science Learning Guide | Analogy, Similarity and Transfer Boundaries
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Primary 4 Science Learning Guide | Apparatus Choice and Measurement Strategy
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Primary 4 Science Learning Guide | Baselines, Controls and Reference Cases
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Primary 4 Science Learning Guide | Cause, Effect, Mechanisms and Explanation Writing
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Primary 4 Science Learning Guide | Change Over Time, Sequences and Before–After Reasoning
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Primary 4 Science Learning Guide | Claims, Evidence and Reasoning
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Primary 4 Science Learning Guide | Classification, Grouping and Criteria
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Primary 4 Science Learning Guide | Classroom and Playground Everyday Science
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Primary 4 Science Learning Guide | Collaborative Investigations, Group Roles and Shared Evidence
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Primary 4 Science Learning Guide | Comparison and Controlled Reasoning
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Primary 4 Science Learning Guide | Concept Maps and Knowledge Connections
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Primary 4 Science Learning Guide | Confidence, Uncertainty and Evidence
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Primary 4 Science Learning Guide | Constructing Tables, Graphs and Data Displays
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Primary 4 Science Learning Guide | Data Loggers, Sensors and Automatic Measurements
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Primary 4 Science Learning Guide | Defending Scientific Ideas, Peer Critique and Revision
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Primary 4 Science Learning Guide | Diagnostic Revision Planning and Study Priorities
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Primary 4 Science Learning Guide | Diagrams, Tables, Data and Patterns
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Primary 4 Science Learning Guide | Digestive System Route, Parts and Functions
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Primary 4 Science Learning Guide | Error Analysis, Misconceptions, Revision and Transfer
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Primary 4 Science Learning Guide | Evaluating Everyday Claims and Advertisements
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Primary 4 Science Learning Guide | Everyday Materials and Devices Science
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Primary 4 Science Learning Guide | Evidence Ranking and Best-Next Measurement
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Primary 4 Science Learning Guide | Evidence Synthesis Across Text, Tables and Diagrams
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Primary 4 Science Learning Guide | Fair Tests, Variables and Method Improvement
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Primary 4 Science Learning Guide | Family Science Challenge Pack with Worked Cases
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Primary 4 Science Learning Guide | Follow-Up Investigations and Next Questions
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Primary 4 Science Learning Guide | Garden and Plant Everyday Science
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Primary 4 Science Learning Guide | Generating Possibilities and Exploring Alternatives
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Primary 4 Science Learning Guide | Heat Misconception Clinic
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Primary 4 Science Learning Guide | Heat, Temperature, Conductors and Changes
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Primary 4 Science Learning Guide | Home and Kitchen Everyday Science
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Primary 4 Science Learning Guide | Independent Retrieval, Study Cycle and the Primary 5 Bridge
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Primary 4 Science Learning Guide | Instrument Checks, Zeroing and Reference Tests
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Primary 4 Science Learning Guide | Investigations, Data, Answers and Transfer
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Primary 4 Science Learning Guide | Light Misconception Clinic
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Primary 4 Science Learning Guide | Light, Seeing, Straight Lines and Shadows
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Primary 4 Science Learning Guide | Making Scientific Decisions with Criteria, Consequences and Values
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Primary 4 Science Learning Guide | Mass, Volume, States of Matter and Air
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Primary 4 Science Learning Guide | Mastery Benchmark and Capstone
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Primary 4 Science Learning Guide | Matter Misconception Clinic
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Primary 4 Science Learning Guide | Matter, Light and Heat
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Primary 4 Science Learning Guide | MCQ Reasoning and Distractor Elimination
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Primary 4 Science Learning Guide | Measurement, Mass, Volume, Temperature and Units
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Primary 4 Science Learning Guide | Missing Data, Blanks, Zeros and Exclusions
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Primary 4 Science Learning Guide | Missing Information, Unknowns and What Cannot Be Concluded
Browse every published Post
3746 results found
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How to Perform in the new G3 SEC Examinations | Learner’s Guide Vol 0058 | English: The First 10 Minutes of K300
17–25 minutes -
How to Perform in the new G2 SEC Examinations | Learner’s Guide Vol 0094 | Mathematics: Sensitivity Checks — Change One Input and Predict How the Answer Should Respond
33–50 minutes -
How to Perform in the new G2 SEC Examinations | Learner’s Guide Vol 0093 | English: Causal-Language Control — Distinguish Because, Therefore, Association and Sequence
33–50 minutes -
How to Perform in the new G2 SEC Examinations | Learner’s Guide Vol 0092 | Instruction Hierarchy — Know Which Rule Governs the Answer Right Now
28–42 minutes -
How to Perform in the new G2 SEC Examinations | Learner’s Guide Vol 0091 | Science: Repeatability, Replication and Reproducibility — Repeat With a Purpose
19–28 minutes -
How to Perform in the new G3 SEC Examinations | Learner’s Guide Vol 0057 | The First 10 Minutes: EMS Stabilisation After Launch
17–25 minutes -
How to Perform in the new G2 SEC Examinations | Learner’s Guide Vol 0090 | Mathematics: Reference-Quantity Control — Know What Every Denominator Is Measuring Against
18–27 minutes -
How to Perform in the new G3 SEC Examinations | Learner’s Guide Vol 0056 | Science: The First 3 Minutes of the G3 Papers
17–25 minutes -
How to Perform in the new G2 SEC Examinations | Learner’s Guide Vol 0089 | English: Negation and Exception Control — Read Not, Unless, Except and Only Precisely
19–28 minutes -
How to Perform in the new G2 SEC Examinations | Learner’s Guide Vol 0088 | Signal-to-Noise Filtering — Keep Only the Information That Changes the Answer
19–28 minutes -
How to Perform in the new G2 SEC Examinations | Learner’s Guide Vol 0087 | Science: Converging Evidence — When Independent Clues Point to the Same Conclusion
41–61 minutes -
How to Perform in the new G2 SEC Examinations | Learner’s Guide Vol 0086 | Mathematics: Bounding Checks — Put the Answer Inside a Plausible Interval Before You Calculate Exactly
37–56 minutes -
How to Perform in the new G2 SEC Examinations | Learner’s Guide Vol 0085 | English: Evidence-Strength Ladder — Separate What the Text States From What It Only Suggests
44–66 minutes -
How to Perform in the new G2 SEC Examinations | Learner’s Guide Vol 0084 | Minimum-Sufficient Answers — Complete the Task, Then Stop Writing
19–28 minutes -
Advanced Mathematics Tutorials | When School Teacher and Mathematics Tutor Disagree About Readiness — How Parents Should Read Conflicting Judgments
42–63 minutes -
How to Perform in the new G2 SEC Examinations | Learner’s Guide Vol 0083 | Science: Diagnostic-Test Evidence — Separate the Target From the Signal Used to Detect It
25–38 minutes -
How to Perform in the new G2 SEC Examinations | Learner’s Guide Vol 0082 | Mathematics: Direction-of-Change Checks — Ask Whether the Answer Moved the Right Way
38–56 minutes -
How to Perform in the new G2 SEC Examinations | Learner’s Guide Vol 0081 | English: Quantifier and Scope Control — Preserve Exactly How Far the Claim Reaches
52–77 minutes -
How to Perform in the new G2 SEC Examinations | Learner’s Guide Vol 0080 | Dependency-Aware Repair — Correct Only the Work That Inherits the Error
23–35 minutes -
Advanced Mathematics Tutorials | Can Too Much Mathematics Tuition Backfire? — Burnout, Overload and the Point of Diminishing Returns
42–63 minutes -
How to Perform in the new G2 SEC Examinations | Learner’s Guide Vol 0079 | Science: Negative Evidence — What the Missing Expected Result Can and Cannot Tell You
44–65 minutes -
How to Perform in the new G2 SEC Examinations | Learner’s Guide Vol 0078 | Mathematics: Dimensional Consistency — Use Units to Reject Impossible Equations Before Calculating
39–59 minutes -
How to Perform in the new G2 SEC Examinations | Learner’s Guide Vol 0077 | English: Contrast-Signal Control — Find Where the Meaning Turns
65–98 minutes -
Advanced Mathematics Tutorials | Back-to-Back Tuition Classes on the Same Day — When More Study Becomes Cognitive Overload
11–16 minutes -
How to Perform in the new G2 SEC Examinations | Learner’s Guide Vol 0076 | Uncertainty Quarantine — Keep One Unknown From Contaminating Known Work
30–45 minutes -
Advanced Mathematics Tutorials | Arriving Late to Mathematics Tuition — What the First 15 Minutes Are Doing and How to Recover
42–63 minutes -
How to Perform in the new G2 SEC Examinations | Learner’s Guide Vol 0075 | Science: Data Ownership — Attach Every Measurement to the Condition That Produced It
31–46 minutes -
How to Perform in the new G2 SEC Examinations | Learner’s Guide Vol 0074 | Mathematics: Invariant Hunting — Find What Must Stay True While the Representation Changes
24–36 minutes -
How to Perform in the new G2 SEC Examinations | Learner’s Guide Vol 0073 | English: Referent-Chain Control — Resolve Who or What Every Pronoun Points To
26–39 minutes -
How to Perform in the new G2 SEC Examinations | Learner’s Guide Vol 0072 | Verification Asymmetry — Check the Answer by a Different Route
24–35 minutes -
Advanced Mathematics Tutorials | How Far Should a Student Travel for Mathematics Tuition? — Commute Time vs Teaching Fit
42–63 minutes -
Primary 5 English Learning Guide | Vocabulary Precision: Context, Collocation and Meaning Control Before Primary 6
84–126 minutes -
Primary 6 English Learning Guide | Transfer After Correction: Prove a Repair on Fresh Work Before Returning to Full Papers
86–129 minutes -
Primary 5 English Learning Guide | From Evidence Selection to Precise PSLE-Style Answers
83–124 minutes -
Primary 6 English Learning Guide | Cross-Component Error Patterns: Find the Weak Link Behind Reading, Writing, Oral and Listening Losses
87–130 minutes -
How to Perform in the new G2 SEC Examinations | Learner’s Guide Vol 0071 | Science: Competing Mechanisms — Find the Observation That Separates Two Plausible Explanations
25–38 minutes -
Primary 6 English Learning Guide | Writing Under Time: Plan, Draft, Revise and Recover Without Losing Task Control
86–129 minutes -
How to Perform in the new G2 SEC Examinations | Learner’s Guide Vol 0070 | Mathematics: Dependency Graphs — Find the Intermediate Quantities That Unlock the Target
24–36 minutes -
How to Perform in the new G2 SEC Examinations | Learner’s Guide Vol 0069 | English: K200 Section A Dual-Text Synthesis — Read Words, Visuals and Source Purpose as One Evidence System
24–36 minutes -
Primary 6 English Learning Guide | Full-Paper Diagnosis: Turn One PSLE English Paper Into a Repair Map Before Doing Another
86–129 minutes -
How to Perform in the new G2 SEC Examinations | Learner’s Guide Vol 0068 | Checkpoint Recalibration — Change the Plan When the Live Paper No Longer Matches the Practice Plan
19–28 minutes -
How to Perform in the new G2 SEC Examinations | Learner’s Guide Vol 0067 | English: Dual-Evidence Inference — Use Two Details to Build One Bounded Conclusion
20–30 minutes -
How to Perform in the new G2 SEC Examinations | Learner’s Guide Vol 0066 | Return Protocol — Resume a Skipped Question Without Starting From Zero
30–45 minutes -
How to Perform in the new G2 SEC Examinations | Learner’s Guide Vol 0065 | Science: Counterfactual Causality — Remove One Link and Test Whether the Explanation Still Works
42–62 minutes -
How to Perform in the new G2 SEC Examinations | Learner’s Guide Vol 0064 | Mathematics: Assumption Audit — Separate Stated Conditions, Derived Facts and Invented Assumptions
29–44 minutes -
How to Perform in the new G2 SEC Examinations | Learner’s Guide Vol 0063 | English: Evidence-Window Control — Reread the Smallest Span That Can Answer the Question
23–35 minutes -
How to Perform in the new G2 SEC Examinations | Learner’s Guide Vol 0062 | Section Handoffs — Close One Mode Cleanly Before Starting the Next
25–37 minutes -
How to Perform in the new G2 SEC Examinations | Learner’s Guide Vol 0061 | Science: Claim–Evidence Mapping — One Dataset Can Support Some Conclusions and Not Others
20–30 minutes -
How to Perform in the new G2 SEC Examinations | Learner’s Guide Vol 0060 | Science: The First 3 Minutes of K223–K225 — Set the MCQ Pace and Protect the Structured Paper
20–29 minutes -
How to Perform in the new G2 SEC Examinations | Learner’s Guide Vol 0059 | Mathematics: The First 3 Minutes of K210 — Set Working Discipline Before the Paper Accelerates
19–29 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.
