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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Secondary 3 English Learning Guide | Argument, Counterargument and Evaluation
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Secondary 3 English Learning Guide | Bias, Framing and Representation
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Secondary 3 English Learning Guide | Cohesion, Paragraph Architecture and Information Flow
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Secondary 3 English Learning Guide | Comparative Reading and Multiple-Text Judgement
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Secondary 3 English Learning Guide | Comprehension Question Control, Evidence and Answer Precision
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Secondary 3 English Learning Guide | Continuous Writing: Narrative, Expository, Reflective and Argument Control
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Secondary 3 English Learning Guide | Descriptive Writing: Atmosphere, Viewpoint, Sensory Detail and Spatial Control
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Secondary 3 English Learning Guide | Digital Source Verification: Lateral Reading, Click Restraint, Original Sources and AI Claims
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Secondary 3 English Learning Guide | Discursive Writing: Trade-offs, Evidence and Judgement
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Secondary 3 English Learning Guide | Editing and Sentence Control: Grammar, Boundaries, Agreement and Tense
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Secondary 3 English Learning Guide | Editing for Concision, Redundancy and Clarity
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Secondary 3 English Learning Guide | Error Analysis, Revision and Examination Transfer
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Secondary 3 English Learning Guide | Exam-Time Decision Control and Recovery
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Secondary 3 English Learning Guide | Informational Report Writing: Findings, Evidence, Limitations and Recommendations
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Secondary 3 English Learning Guide | Irony, Implication and Ambiguity
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Secondary 3 English Learning Guide | Listening, Note-Taking, Inference and Structure
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Secondary 3 English Learning Guide | Metacognition, Self-Editing and Independent Control
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Secondary 3 English Learning Guide | Modality, Certainty and Qualification
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Secondary 3 English Learning Guide | Morphology, Etymology, Word Families and Academic Vocabulary Transfer
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Secondary 3 English Learning Guide | Multimodal Representing: Slides, Infographics, Script and Spoken Delivery
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Secondary 3 English Learning Guide | Narrative Perspective, Character Motivation and Reliability
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Secondary 3 English Learning Guide | Oral Communication: Planned Response and Spoken Interaction
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Secondary 3 English Learning Guide | Poetry and Spoken Text: Voice, Sound, Form, Ambiguity and Interpretation
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Secondary 3 English Learning Guide | Reading, Inference, Language Effect and Summary
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Secondary 3 English Learning Guide | Reflective Writing: Experience, Insight, Change and Perspective
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Secondary 3 English Learning Guide | Register and Style Transformation
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Secondary 3 English Learning Guide | Rhetoric and Persuasive Language: Appeals, Framing, Evidence and Audience
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Secondary 3 English Learning Guide | Situational Writing: Audience, Context and Information Transformation
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Secondary 3 English Learning Guide | Source Credibility, Reliability and Evidence Evaluation
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Secondary 3 English Learning Guide | Statistics, Percentages, Averages and Quantitative Claims
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Secondary 3 English Learning Guide | Summary, Paraphrase, Synthesis and Compression
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Secondary 3 English Learning Guide | Synthesis Across Sources and Viewpoints
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Secondary 3 English Learning Guide | The Upper-Secondary Reset: From Response to Judgement and Argument
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Secondary 3 English Learning Guide | Visual and Multimodal Text: Purpose, Layout and Perspective
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Secondary 3 English Learning Guide | Vocabulary, Connotation, Collocation, Register and Precision
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Secondary 3 English Learning Guide | Vocabulary, Grammar, Editing, Listening and Oral Control
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Secondary 3 English Learning Guide | Writer’s Craft: Structure, Tone and Effect
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Secondary 3 English Learning Guide | Writing for Purpose, Audience, Argument and Development
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Secondary 3 English Sengkang | Argument, Evidence & Examination Readiness
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Secondary 3 English Sengkang | The Voyage of Water
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Secondary 3 English Sengkang | When Evidence Has to Become Argument
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Secondary 3 English Tuition at Punggol | O-Level & G3 English Preparation with eduKate
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Secondary 3 English Tuition Sengkang | Upper Secondary Writing, Comprehension & Argument
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Secondary 3 English Tutor | Curie Series | Argument, Examination Craft and Independent Control
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Secondary 3 Mathematics Classroom | Chapter 10: Area and Volume of Similar Figures and Solids | G2/G3
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Secondary 3 Mathematics Classroom | Chapter 11: Geometrical Properties of Circles | G2/G3
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Secondary 3 Mathematics Classroom | Chapter 1: Quadratic Equations and Functions | G2/G3
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Secondary 3 Mathematics Classroom | Chapter 2: Linear Inequalities | G2/G3
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Secondary 3 Mathematics Classroom | Chapter 3: Indices, Standard Form and Compound Interest | G2/G3
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Secondary 3 Mathematics Classroom | Chapter 4: Coordinate Geometry | G2/G3
Browse every published Post
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Student/Studying Interface Learning Manual: Reader-Mode Interface | Removing Page Clutter Can Also Remove Part of the Study Object
5–7 minutes -
Student/Studying Interface Learning Manual: Switch-Control Study Interface | Scanning Past the Right Button Can Turn One Action Into a Navigation Loop
4–6 minutes -
Student/Studying Interface Learning Manual: Accessible-Mathematics Interface | An Equation Can Look Correct and Still Be Unreadable to the Study Tool
5–7 minutes -
Student/Studying Interface Learning Manual: Reference-Manager Interface | A Perfectly Formatted Citation Can Still Point to the Wrong Source
5–8 minutes -
MindOS Learning Manual: Spatial-Contiguity State | If Related Information Is Too Far Apart, the Learner Spends Effort Searching Instead of Learning
8–11 minutes -
MindOS Learning Manual: Claim–Evidence Reasoning State | A Fact Is Not Evidence Until You Can Explain What It Supports
8–13 minutes -
MindOS Learning Manual: Memory-Conformity State | Someone Else’s Answer Can Change What You Think You Remember
8–12 minutes -
MindOS Learning Manual: Wakeful-Rest State | What You Do Immediately After Learning Can Change What Survives
8–12 minutes -
MindOS Learning Manual: Illusory-Truth State | Repetition Can Make a Claim Feel Truer Without Making It True
6–9 minutes -
MindOS Learning Manual: Source-Evaluation State | A Professional-Looking Source Can Still Be Weak Evidence
8–11 minutes -
MindOS Learning Manual: Signaling State | A Highlight Helps Only If It Points to the Structure That Matters
8–11 minutes -
MindOS Learning Manual: Segmentation State | A Long Explanation Can Be Correct and Still Arrive Too Fast to Learn
8–12 minutes -
Bolt Performance Calibration — A Precise Class Average Does Not Mean Every Student Was Measured Precisely
9–13 minutes -
Bolt Performance Calibration — The Same Performance Can Look Different Under Holistic and Analytic Scoring
8–12 minutes -
Bolt Performance Calibration — Change the Component Weights and You Change What the Total Score Means
8–12 minutes -
Bolt Performance Calibration — A “Grade 8 Reading Level” Does Not Mean a Younger Student Is Ready for Grade 8 Curriculum
9–13 minutes -
MindOS Learning Manual: Test-Expectancy State | How You Expect to Be Tested Can Change How You Study
11–16 minutes -
MindOS Learning Manual: Segmenting State | A Continuous Explanation Can Be Correct and Still Move Too Fast to Build
10–15 minutes -
MindOS Learning Manual: Directed-Forgetting State | Sometimes the Right Learning Move Is to Stop Rehearsing What No Longer Matters
9–14 minutes -
Student/Studying Interface Learning Manual: Voice-Control Study Interface | Saying the Right Command Is Not Enough If the Wrong Control Activates
5–7 minutes -
MindOS Learning Manual: Retroactive-Interference State | New Learning Can Make Older Learning Harder to Retrieve
10–15 minutes -
Student/Studying Interface Learning Manual: Refreshable-Braille Interface | Reading One Line at a Time Should Not Make the Document Lose Its Structure
5–7 minutes -
Bolt Performance Calibration — A Superscore Can Combine Your Best Sections Without Representing Any Single Test Sitting
9–13 minutes -
Student/Studying Interface Learning Manual: Study-Chat Interface | A Useful Answer Can Disappear Above Fifty New Messages
4–7 minutes -
Bolt Performance Calibration — Negative Marking Can Measure Risk Strategy as Well as Knowledge
9–13 minutes -
Student/Studying Interface Learning Manual: Handwriting-Recognition Interface | The Ink Can Be Right and the Converted Text Wrong
5–7 minutes -
Student/Studying Interface Learning Manual: Slide-Deck Interface | A Presentation Can Look Complete While Hiding the Explanation in Notes, Builds or Missing Context
6–9 minutes -
Student/Studying Interface Learning Manual: Computer Algebra System Interface | A Symbolic Answer Can Be Correct and Still Hide the Conditions That Make It True
5–7 minutes -
Student/Studying Interface Learning Manual: Digital Measurement-Tool Interface | A Ruler or Protractor on Screen Can Be Perfectly Aligned and Still Measure the Wrong Thing
5–8 minutes -
Bolt Performance Calibration — Two Assessments Can Correlate Strongly and Still Disagree About Individual Scores
8–12 minutes -
Student/Studying Interface Learning Manual: Interactive-Timeline Interface | Seeing Events in Order Is Not the Same as Understanding Which Time State You Are Viewing
4–6 minutes -
Bolt Performance Calibration — A Statistically Significant Result Can Still Be Too Small to Matter Educationally
8–12 minutes -
Student/Studying Interface Learning Manual: Virtual-Microscope Interface | More Magnification Can Show Less of What Matters
5–7 minutes -
Bolt Performance Calibration — Scores Improved After the Programme. Would They Have Improved Anyway?
8–12 minutes -
Student/Studying Interface Learning Manual: Access-Permission Interface | The Right Resource Is Still Unusable If the Learner Cannot Open It
5–8 minutes -
Bolt Performance Calibration — Three Hundred Students in Six Classes Are Not Three Hundred Independent Experiments
8–12 minutes -
Bolt Performance Calibration — If You Measure Enough Outcomes, One Success Can Appear by Chance
7–11 minutes -
Bolt Performance Calibration — If Two Groups Start Different, the Final Difference May Not Be the Intervention
8–12 minutes -
Student/Studying Interface Learning Manual: File-Format Conversion Interface | The Same Work Can Change When It Becomes PDF, DOCX, CSV or an Image
7–10 minutes -
MindOS Learning Manual: Incubation State | Stepping Away Can Help a Stuck Problem—But Only After the Problem Has Been Loaded
9–14 minutes -
Student/Studying Interface Learning Manual: 3D-Model Interface | Rotating the Object Can Reveal Structure and Hide Orientation
6–9 minutes -
Student/Studying Interface Learning Manual: Sensor & Data-Logger Interface | A Precise Reading Is Not Useful If the Learner Does Not Know What Was Measured
5–8 minutes -
MindOS Learning Manual: Collaborative-Inhibition State | A Group Can Recall Less Than Its Members Would Recall Separately
9–14 minutes -
Student/Studying Interface Learning Manual: Interactive-Map Interface | A Map Can Be Accurate and Still Answer the Wrong Question
6–9 minutes -
MindOS Learning Manual: Pretraining State | Learn the Parts Before the System Starts Moving
9–13 minutes -
Student/Studying Interface Learning Manual: Code-Execution Interface | Running Without Knowing What State Ran Can Make Correct Code Look Wrong
7–10 minutes -
MindOS Learning Manual: Rereading State | Reading It Again Can Help—But Easier Reading Is Not the Same as Better Learning
13–19 minutes -
Bolt Performance Calibration — If Students Saw the Questions Before the Test, the Score Is Measuring a Different Performance
7–11 minutes -
Bolt Performance Calibration — A Growth Score Can Be Noisier Than Either Test It Came From
7–11 minutes -
Bolt Performance Calibration — If the Control Group Starts Copying the Intervention, the Comparison Stops Being Clean
7–11 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.
