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
3746 results found
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How to Tell Whether a PSLE Science Count Means Objects, Events or Measurements
5–8 minutes -
How to Answer “Determine” Questions in PSLE Science Without Turning Determination Into Explanation
5–7 minutes -
How to Read a Corrected PSLE Science Measurement Without Counting the Old Value as Extra Evidence
6–9 minutes -
How to Tell the Presence of a PSLE Science Condition From Its Amount or Level
7–11 minutes -
How to Combine Evidence From Two PSLE Science Investigations Without Merging Different Questions
6–9 minutes -
How to Check Whether a PSLE Science Method Improvement Actually Fixes the Flaw
7–10 minutes -
How to Tell a Real PSLE Science Plateau From a Measuring-Instrument Limit
7–11 minutes -
How to Reclassify the Same PSLE Science Objects When the Criterion Changes
10–15 minutes -
How to Tell When Two Similar-Looking PSLE Science Questions Need Different Concepts
11–16 minutes -
How to Compare PSLE Science Photographs Without Mistaking Camera Perspective for Scientific Change
8–11 minutes -
How to Read a Locally Defined Score or Index in PSLE Science Without Treating It as a Standard Unit
7–10 minutes -
How to Tell Preliminary Trial Data From Final Evidence in a PSLE Science Investigation
7–11 minutes -
How to Keep Later Information in a PSLE Science Multi-Part Question From Rewriting What You Could Know Earlier
8–12 minutes -
How to Design a PSLE Science Results Table Before Collecting the Data
13–20 minutes -
How to Keep Your Own Earlier Answer Separate From Given Evidence in a PSLE Science Structured Question
12–18 minutes -
How to Use Mark Allocation in a 2026 PSLE Science Structured Question Without Turning Marks Into a Sentence Formula
13–20 minutes -
How to Answer “Infer” Questions in PSLE Science Without Treating an Inference as an Observation
12–18 minutes -
How to Tell a Replication From an Extension in a PSLE Science Follow-Up Investigation
12–17 minutes -
How to Diagnose a PSLE Science Failure After a Delay: Recall, Condition Tracking or Transfer?
12–18 minutes -
How to Tell When a Missing Value in a PSLE Science Table Can Be Inferred—and When It Must Stay Unknown
10–16 minutes -
How to Answer “Justify” Questions in PSLE Science Without Repeating Your Choice
9–13 minutes -
How to Test a PSLE Science MCQ Option That Is True Only Under an Unstated Condition
11–16 minutes -
How to Decide What a PSLE Science Investigation Can Still Tell You After You Find a Method Flaw
10–15 minutes -
How to Decide Whether to Join Data Points in a PSLE Science Graph Without Inventing Unmeasured Results
10–15 minutes -
How to Answer “What Is Meant By” in PSLE Science Without Giving an Example Instead of a Definition
10–15 minutes -
How to Decide When to Check Feedback in PSLE Science Practice Without Turning the Answer Into a Copying Exercise
10–14 minutes -
How to Use PSLE Science Data Collected by Another Student Without Inventing the Missing Method
10–15 minutes -
How to Tell Observational Evidence From Experimental Evidence in a PSLE Science Question Without Inventing a Changed Variable
9–14 minutes -
How to Check a PSLE Science Revision Resource Against the Current Syllabus Without Throwing Away Useful Enrichment
10–15 minutes -
How to Evaluate PSLE Science Observations, Information and Methods Without Jumping Straight to “Improve It”
7–10 minutes -
How to Analyse PSLE Science Information by Finding Parts, Patterns and Relationships
6–9 minutes -
How to Answer “Differentiate” Questions in PSLE Science Without Turning Them Into a General Comparison
5–7 minutes -
How to Answer “Identify” and “List” Questions in PSLE Science Without Over-Explaining
6–10 minutes -
How to Tell When a PSLE Science Instrument Reading Is Lagging Behind the System
10–16 minutes -
How to Check a PSLE Science Practice Answer Key When It Seems Wrong
9–14 minutes -
How to Practise PSLE Science With a Study Partner Without Copying Each Other’s Reasoning
10–15 minutes -
How to Tell Whether PSLE Science Categories Overlap Before Adding Their Counts
9–13 minutes -
Top 10 Research Skills Worth Learning
12–18 minutes -
How to Construct a PSLE Science Set-Up From a Given Plan Without Changing the Investigation
10–14 minutes -
How to Use a Reference Value to Check a PSLE Science Measuring Instrument Before Trusting Its Readings
8–12 minutes -
How to Tell Repeatability From Reproducibility in PSLE Science When Another Learner Repeats the Method
8–12 minutes -
How to Tell Measurement Precision From Accuracy in PSLE Science Without Assuming Repeated Agreement Means Correct
9–13 minutes -
How to Tell a Controlled Condition From a Condition That Only Happened to Stay the Same in PSLE Science
7–11 minutes -
How to Tell When the Same PSLE Science Concept Requires a Different Reasoning Job
8–11 minutes -
How to Spot When Changing One PSLE Science Variable Automatically Changes Another
8–12 minutes -
How to Tell When PSLE Science Evidence Shows the Direction of Change but Not How Large the Change Is
7–11 minutes -
How to Read a PSLE Science Measurement After an Instrument Is Reset to Zero Without Losing the Reference
8–12 minutes -
How to Tell Whether a Measurement Error Shifts Both PSLE Science Set-Ups Together or Creates a False Difference
7–10 minutes -
How to Tell Whether Two PSLE Science Observations Are Independent Checks or Two Effects of the Same Event
8–11 minutes -
How to Read the Same Whole-System Total When the Parts Can Be Distributed Differently in PSLE Science
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.
