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 6 English Learning Guide | Tense and Aspect: Time, Sequence and Meaning
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Primary 6 English Learning Guide | Text Structure, Main Idea and Paragraph Function
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Primary 6 English Learning Guide | Verb Patterns: Gerunds, Infinitives and Complement Control
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Primary 6 English Learning Guide | Viewpoint, Character Voice and Perspective in Reading
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Primary 6 English Learning Guide | Visual Text: Purpose, Audience, Layout and Evidence
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Primary 6 English Learning Guide | Visual Text: Small Print, Conditions, Numbers and Persuasion
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Primary 6 English Learning Guide | Vocabulary in Context, Collocation and Vocabulary Cloze
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Primary 6 English Learning Guide | Vocabulary in Context, Language Effect and Tone
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Primary 6 English Learning Guide | Vocabulary, Grammar, Synthesis, Cloze and Editing
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Primary 6 English Learning Guide | Writing for Purpose, Audience, Situational Writing and Continuous Writing
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Primary 6 English Sengkang | The Voyage of Water
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Primary 6 English Sengkang | Why 3-Pax Helps Examination Recovery
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Primary 6 English Tuition Centre Sengkang | Use Every Paper as Telemetry
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Primary 6 English Tuition Sengkang | PSLE English Preparation & Exam Control
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Primary 6 English Tutor | Curie Series | Integration, PSLE and the Handover to Secondary English
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Primary 6 English | When Language Becomes Examination Performance | Darwin × Voyage
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Primary 6 Mathematics Learning Guide | Age Problems and Constant-Difference Reasoning Across Time
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Primary 6 Mathematics Learning Guide | Algebra, Unknowns, Expressions and Simple Equations
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Primary 6 Mathematics Learning Guide | Angles in Geometric Figures and Shape Properties
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Primary 6 Mathematics Learning Guide | Applications, Assumptions and Model Limits
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Primary 6 Mathematics Learning Guide | Assumption Method, Replacement Difference and All-One-Type Reasoning
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Primary 6 Mathematics Learning Guide | Average and Data Relationships
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Primary 6 Mathematics Learning Guide | Case Splitting and Decision Trees
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Primary 6 Mathematics Learning Guide | Circles, Composite Figures and Volume
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Primary 6 Mathematics Learning Guide | Conditional Ratio Problems: If-Then Changes, Ratio Constraints and Scenario Reconstruction
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Primary 6 Mathematics Learning Guide | Connecting Concepts Across Topics
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Primary 6 Mathematics Learning Guide | Constant Part Problems and Changing Ratios
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Primary 6 Mathematics Learning Guide | Constant Total Problems and Internal Transfer
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Primary 6 Mathematics Learning Guide | Constraints, Bounds and Feasibility
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Primary 6 Mathematics Learning Guide | Container and Content Problems: Fixed Base Area, Water-Level Change and Volume Conservation
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Primary 6 Mathematics Learning Guide | Data Displays, Graphs and Statistical Interpretation
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Primary 6 Mathematics Learning Guide | Deductive Reasoning and Logical Chains
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Primary 6 Mathematics Learning Guide | Double-IF Problems and Two-Scenario Reasoning
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Primary 6 Mathematics Learning Guide | Drawing Diagrams and Representation Switching
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Primary 6 Mathematics Learning Guide | Elimination Method: Cancelling Equal Quantities Across Paired Conditions
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Primary 6 Mathematics Learning Guide | Equal Fractions and Common-Numerator Reasoning
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Primary 6 Mathematics Learning Guide | Equal Stage Problems and End-State Reconstruction
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Primary 6 Mathematics Learning Guide | Everything Changed Problems and Units-and-Parts Reasoning
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Primary 6 Mathematics Learning Guide | Excess-and-Shortage Problems and Fixed-Total Grouping
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Primary 6 Mathematics Learning Guide | Folded Shapes, Creases and Hidden-Angle Visualisation
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Primary 6 Mathematics Learning Guide | Fractions, Decimals, Percentages and Ratio as Equivalent Representations
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Primary 6 Mathematics Learning Guide | Fractions, Division and Part-Whole Reasoning
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Primary 6 Mathematics Learning Guide | Gap-and-Difference Problems and Comparison Change
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Primary 6 Mathematics Learning Guide | Grouping, Number × Value and Equal-Group Reconstruction
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Primary 6 Mathematics Learning Guide | Guess, Check, Improve and Assumption Testing
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Primary 6 Mathematics Learning Guide | Information Sufficiency and Missing Data
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Primary 6 Mathematics Learning Guide | Mathematical Communication, Working and Justification
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Primary 6 Mathematics Learning Guide | Mathematical Modelling: From Real Situation to Model and Back
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Primary 6 Mathematics Learning Guide | Measurement Units, Conversion and Dimensional Reasoning
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Primary 6 Mathematics Learning Guide | Metacognition, Self-Monitoring and Strategy Control
Browse every published Post
3746 results found
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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.
