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 3 English Learning Guide | Opinion Writing: Claim, Reasons, Examples, Audience and Revision
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Primary 3 English Learning Guide | Oral Communication: Reading Aloud, Conversation, Idea Development and Recovery
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Primary 3 English Learning Guide | Paragraph Function and Logical Connections Workshop: Introduction, Explanation, Evidence, Sequence, Cause, Comparison and Transitions
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Primary 3 English Learning Guide | Parts of Speech in Context: Nouns, Verbs, Adjectives, Adverbs and Prepositions
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Primary 3 English Learning Guide | Personal Recount Writing: Chronology, Significant Moments, Reflection and Voice
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Primary 3 English Learning Guide | Phrasal Verbs and Common Multi-Word Expressions: Context, Collocation and Register
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Primary 3 English Learning Guide | Poetry and Literary Language: Imagery, Sound, Character, Theme and Response
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Primary 3 English Learning Guide | Possessive Nouns and Apostrophes Workshop: Singular and Plural Ownership, Association, Contractions and Editing
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Primary 3 English Learning Guide | Prefixes, Suffixes and Morphology Workshop: Base Words, Meaning, Word Families, Spelling and Context
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Primary 3 English Learning Guide | Prepositions Workshop: Time, Place, Movement and Precise Instructions
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Primary 3 English Learning Guide | Presentation Skills: Planning, Signposting, Voice, Visuals, Questions and Recovery
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Primary 3 English Learning Guide | Procedural Writing: Goal, Materials, Sequence, Conditions and Testing
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Primary 3 English Learning Guide | Pronouns, Articles and Reference Chains: Clarity, Cohesion and Meaning
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Primary 3 English Learning Guide | Question Generation and Metacognitive Reading: Prediction, Monitoring and Repair
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Primary 3 English Learning Guide | Questions and Negatives Workshop: Do, Does, Did, Be and Meaning-Preserving Rewrites
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Primary 3 English Learning Guide | Reading Fluency, Phrasing, Silent Reading Stamina and Strategic Rereading
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Primary 3 English Learning Guide | Reading Multi-Step Instructions and Task Language: Sequence, Conditions, Constraints and Checking
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Primary 3 English Learning Guide | Reading Tables, Charts, Timetables and Maps: Labels, Units, Comparison and Evidence
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Primary 3 English Learning Guide | Reading Viewpoint and Bias: Perspective, Language, Selection and Evidence
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Primary 3 English Learning Guide | Reading, Comprehension, Inference and Evidence Foundations
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Primary 3 English Learning Guide | Reference Tools: Dictionary, Thesaurus, Glossary, Index and Alphabetical Order
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Primary 3 English Learning Guide | Regular, Irregular and Collective Nouns Workshop: Plural Forms, Number Meaning, Determiners and Agreement
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Primary 3 English Learning Guide | Research and Information Literacy: Questions, Sources, Keywords, Notes and Simple Synthesis
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Primary 3 English Learning Guide | Sentence Combining and Cohesion: Connectors, Pronouns, Reference and Paragraph Flow
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Primary 3 English Learning Guide | Sentence Expansion: Phrases, Clauses, Reasons, Conditions, Time and Contrast
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Primary 3 English Learning Guide | Sentence Types and Punctuation: Statements, Questions, Commands, Exclamations, Capitals, Commas and Apostrophes
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Primary 3 English Learning Guide | Spelling and Word Study: Syllables, Prefixes, Suffixes, Word Families and Dictation
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Primary 3 English Learning Guide | Story Elements and Plot Workshop: Setting, Character Goal, Problem, Event Chain, Turning Point, Consequence and Resolution
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Primary 3 English Learning Guide | Subject and Predicate Workshop: Sentence Core, Complete and Simple Subjects, Compound Parts and Editing
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Primary 3 English Learning Guide | Subject, Object, Possessive and Reflexive Pronouns Workshop: Case, Sentence Roles and Clear Reference
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Primary 3 English Learning Guide | Subject–Verb Agreement Workshop: Head Nouns, Distractors and Independent Checking
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Primary 3 English Learning Guide | Summarising and Note-Making: Main Ideas, Keywords, Paraphrase and Recall
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Primary 3 English Learning Guide | Tense and Time Control: Past, Present, Future, Sequence and Consistency
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Primary 3 English Learning Guide | The Primary 3 Reset: From Learning to Read to Reading to Learn
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Primary 3 English Learning Guide | Theme and Central Message Workshop: Topic, Character Choice, Consequence and Evidence
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Primary 3 English Learning Guide | Verb Forms and Helping Verbs Workshop: Be, Have, Do, Regular and Irregular Forms, Questions and Negatives
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Primary 3 English Learning Guide | Visual and Multimodal Text: Purpose, Audience, Layout and Evidence
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Primary 3 English Learning Guide | Vocabulary in Context, Word Families and Cloze Meaning
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Primary 3 English Learning Guide | Vocabulary, Grammar, Listening and Oral Control
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Primary 3 English Learning Guide | Whole-Text Revision: Purpose, Cohesion, Consistency, Repetition, Variety and Proofreading
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Primary 3 English Learning Guide | Word Meaning Relationships: Synonyms, Antonyms, Multiple Meanings, Shades and Collocation
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Primary 3 English Learning Guide | Writing: Sentences, Paragraphs, Composition and Revision
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Primary 3 English Sengkang | The Voyage of Water
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Primary 3 English Tuition Sengkang | Comprehension, Grammar & Composition
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Primary 3 English Tutor | Curie Series | When Reading Becomes a Tool for Learning
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Primary 3 English | When English Stops Being Separate Skills | Darwin × Voyage
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Primary 3 Mathematics Learning Guide | Adding & Subtracting Related Fractions Within One Whole, Equivalent Denominators & Visual Models
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Primary 3 Mathematics Learning Guide | Addition, Subtraction, Multiplication & Division Word-Problem Structures
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Primary 3 Mathematics Learning Guide | Angles Smaller/Greater Than a Right Angle, Quarter-Turn Benchmarks, Rotation & Classification
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Primary 3 Mathematics Learning Guide | Angles, Right Angles, Parallel & Perpendicular Lines
Browse every published Post
4267 results found
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MindOS Learning Manual: Analogical-Mapping State | Two Problems Can Look Different and Still Have the Same Skeleton
6–9 minutes -
Bolt Measurement Note 14 — A Higher Retest Score May Be Part Learning, Part Test Familiarity
6–9 minutes -
Student/Studying Interface Learning Manual: Study Queue Interface | A To-Do List Is Not Yet a Study Order
7–10 minutes -
MindOS Learning Manual: Concept-Boundary State | Knowing the Definition Is Not the Same as Knowing What Belongs
6–9 minutes -
Bolt Measurement Note 13 — A Test With Too Few Questions Can Misrepresent a Skill
6–9 minutes -
MindOS Learning Manual: Example-Generation State | Can You Invent a New Example That Really Fits?
6–9 minutes -
MindOS Learning Manual: Summarisation State | A Shorter Page Can Still Lose the Idea
7–10 minutes -
MindOS Learning Manual: Desirable-Difficulty State | Harder Learning Helps Only When the Difficulty Is Doing Useful Work
6–8 minutes -
MindOS Learning Manual: Mnemonic Encoding State | A Memory Trick Must Still Lead Back to the Meaning
5–7 minutes -
MindOS Learning Manual: Overlearning State | One Correct Answer Is Not Always Enough—but More Is Not Always Better
5–8 minutes -
MindOS Learning Manual: Chunking State | When Five Steps Become One Thing
6–9 minutes -
MindOS Learning Manual: Imagination-to-Learn State | Can You Rehearse the Model Without Looking at It?
5–8 minutes -
MindOS Learning Manual: Drawing-to-Learn State | A Picture Helps Only If You Build the Meaning Into It
5–7 minutes -
MindOS Learning Manual: Concreteness Fading State | The Blocks Are Supposed to Disappear
5–7 minutes -
MindOS Learning Manual: Practice Variability State | Repeating the Same Problem Can Hide the Rule
4–7 minutes -
MindOS Learning Manual: Pretesting State | Failing Before Learning Can Help You Learn
7–11 minutes -
MindOS Learning Manual: Completion Problem State | Can You Finish the Route Before You Build the Whole Route?
4–5 minutes -
MindOS Learning Manual: Question Generation State | Can You Turn What You Studied Into a Good Question?
4–5 minutes -
MindOS Learning Manual: Goal-Free Problem State | When the Goal Itself Overloads the Novice
4–5 minutes -
MindOS Learning Manual: Erroneous Example State | Can You Find Why the Wrong Solution Is Wrong?
4–6 minutes -
MindOS Learning Manual: Successive Relearning State | Remembering It Once Is Not the Same as Keeping It
8–12 minutes -
Student/Studying Interface Learning Manual: Flashcard Study Interface | A Deck Needs Rules Before It Becomes a Study Session
3–5 minutes -
Student/Studying Interface Learning Manual: Learning Platform Interface | A Dashboard Is Not a Study Plan
2–3 minutes -
Student/Studying Interface Learning Manual: Search Study Interface | Finding Information Can Make You Lose the Question
4–6 minutes -
Student/Studying Interface Learning Manual: Notes Study Interface | Notes Need a Route In, Through and Back Out
3–5 minutes -
Student/Studying Interface Learning Manual: Textbook Study Interface | A Chapter Is Not a Study Plan
4–6 minutes -
Student/Studying Interface Learning Manual: Version-Control Interface | You Can Study the Wrong File Perfectly
3–4 minutes -
Student/Studying Interface Learning Manual: Video Study Interface | Pressing Play Is Not a Study Route
3–5 minutes -
Student/Studying Interface Learning Manual: Answer-Key Interface | The Answer Key Is a Tool, Not the Study Plan
3–5 minutes -
Student/Studying Interface Learning Manual: Question Queue Interface | Not Every Question Should Stop the Study Session
4–6 minutes -
Bolt Measurement Note 12 — Your Percentile Can Fall While Your Achievement Rises
8–12 minutes -
Bolt Measurement Note 11 — A Test Score Is an Estimate, Not an Exact Point
8–12 minutes -
Bolt Measurement Note 10 — When the Test Is Too Hard, Low Scores Stop Separating Learners
8–12 minutes -
Bolt Measurement Note 09 — A Perfect Score Can Hide Further Growth
8–13 minutes -
MindOS Learning Manual: Cue-Dependence State | Can You Retrieve the Idea When the Usual Clues Disappear?
6–9 minutes -
MindOS Learning Manual: Correction State | Can You Repair the Error Without Copying the Fix?
5–8 minutes -
From Measurement to Action — A Practical Calibration Guide for Parents, Teachers, Students and AI
10–15 minutes -
How to Read a Learner: Score, Self-Estimate, Teacher, Parent, Task, State and Time
11–17 minutes -
Human Performance Calibration — The Complete Bolt Framework
10–15 minutes -
Student/Studying Interface Learning Manual: Finish-Condition Interface | A Study Session Needs a Definition of Done
3–4 minutes -
Student/Studying Interface Learning Manual: Study-Mode Interface | Learning, Practice and Revision Are Not the Same Session
3–4 minutes -
Student/Studying Interface Learning Manual: Resource-Pack Interface | More Study Resources Can Make the Next Move Less Clear
3–4 minutes -
Student/Studying Interface Learning Manual: First-Action Interface | A Study Plan Can Be Clear and Still Have No Starting Line
3–4 minutes -
Student/Studying Interface Learning Manual: Study Object Interface | You Cannot Organise a Study Session Until You Can Name What You Are Studying
3–5 minutes -
Bolt 40 — Know Yourself — But Keep Checking Against the World
6–9 minutes -
Bolt 39 — What Happens When Nobody Has Enough Evidence?
4–6 minutes -
Bolt 38 — Can a Student Be Right When Everyone Else Is Wrong?
4–6 minutes -
Bolt 37 — Can Parents Be Miscalibrated About a Child?
5–7 minutes -
Bolt Measurement Note 08 — After a Very Bad Result, Improvement May Not Mean the Fix Worked
3–4 minutes -
Bolt Measurement Note 07 — Two Students Can Get the Same Score for Different Reasons
3–4 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.
