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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Primary 3 Mathematics Learning Guide | Area, Perimeter, Rectangles, Squares & Rectilinear Figures
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Primary 3 Mathematics Learning Guide | Assessment Pacing, Error Recovery, Checking & Test Strategy
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Primary 3 Mathematics Learning Guide | Bar Graphs, Scales, Data Comparison & Interpretation
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Primary 3 Mathematics Learning Guide | Bar Models, Diagrams, Tables & Mathematical Representation
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Primary 3 Mathematics Learning Guide | Building & Completing Bar Graphs, Scale Choice & Data Representation
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Primary 3 Mathematics Learning Guide | Classification, Sorting, Properties & Mathematical Categories
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Primary 3 Mathematics Learning Guide | Comparing & Ordering Unlike Fractions, Benchmarks, Same Numerator & Number Lines
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Primary 3 Mathematics Learning Guide | Concrete–Pictorial–Abstract Learning, Manipulatives, Diagrams & Symbols
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Primary 3 Mathematics Learning Guide | Curriculum Progression, Prerequisite Dependencies & Learning Sequence
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Primary 3 Mathematics Learning Guide | Diagnostic Benchmark, Worked Answers & First Weak Link Routing
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Primary 3 Mathematics Learning Guide | Drawing Parallel & Perpendicular Lines, Square Grids, Horizontal/Vertical Lines & Right-Angle Verification
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Primary 3 Mathematics Learning Guide | Equality, Number Sentences, Missing Values & Balance
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Primary 3 Mathematics Learning Guide | Equivalent Fractions, Simplest Form, Numerator/Denominator Scaling & Same-Value Models
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Primary 3 Mathematics Learning Guide | Estimation, Mental Mathematics, Checking & Answer Verification
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Primary 3 Mathematics Learning Guide | Examples, Non-Examples, Misconceptions, Contrast & Concept Repair
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Primary 3 Mathematics Learning Guide | Formative Assessment, Exit Tickets, Diagnostics & Feedback
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Primary 3 Mathematics Learning Guide | Fraction Sense, Equivalence, Comparison & Related Fraction Operations
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Primary 3 Mathematics Learning Guide | Fractions of a Set, Equal Groups, Collections, Unit Fractions & Part-of-a-Group Reasoning
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Primary 3 Mathematics Learning Guide | Fractions, Equivalent Fractions, Simplest Form & Money
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Primary 3 Mathematics Learning Guide | Heuristics II: Act It Out, Draw a Diagram, Simplify & Look for a Pattern
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Primary 3 Mathematics Learning Guide | Home Learning, Homework Independence, Parent Support & Sustainable Study Routines
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Primary 3 Mathematics Learning Guide | Justification, Reasoning, Proof Habits & Explaining Why
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Primary 3 Mathematics Learning Guide | Length, Mass, Liquid Volume, Unit Conversion & Compound Measures
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Primary 3 Mathematics Learning Guide | Lesson Sequencing, Worked Examples, Guided Practice & Independent Transfer
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Primary 3 Mathematics Learning Guide | Mastery Criteria, Progress Evidence, Fluency, Transfer & Independence
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Primary 3 Mathematics Learning Guide | Mastery Diagnostic Map, Fluency, Processes & Metacognition
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Primary 3 Mathematics Learning Guide | Mathematical Communication, Working, Notation & Explanation
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Primary 3 Mathematics Learning Guide | Mathematical Discussion, Questioning, Peer Explanation & Classroom Dialogue
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Primary 3 Mathematics Learning Guide | Mathematical Language, Comparison, Relationships & Inverse Thinking
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Primary 3 Mathematics Learning Guide | Mathematical Modelling, Assumptions, Estimation & Real-World Decisions
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Primary 3 Mathematics Learning Guide | Mathematical Reading, Question Parsing, Vocabulary & Problem Interpretation
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Primary 3 Mathematics Learning Guide | Measurement Estimation, Choosing Metric Units, Reading Scales & Reasonableness
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Primary 3 Mathematics Learning Guide | Measurement, Time, Area, Perimeter, Angles & Geometry
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Primary 3 Mathematics Learning Guide | Mental Computation, Flexible Number Strategies & Efficient Calculation
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Primary 3 Mathematics Learning Guide | Mixed Problems, Strategy Choice, Transfer & Non-Routine Reasoning
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Primary 3 Mathematics Learning Guide | Money, Decimal Notation, Total Cost, Difference & Change
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Primary 3 Mathematics Learning Guide | Multiplication & Division Algorithms, Place Value, Regrouping, Quotients & Checking
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Primary 3 Mathematics Learning Guide | Multiplication Properties, Distributive Thinking, Arrays, Decomposition & Mental Strategies
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Primary 3 Mathematics Learning Guide | Multiplication Tables 6–9, Derived Facts, Patterns, Doubling & Commutative Reasoning
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Primary 3 Mathematics Learning Guide | Multiplication Tables, Division, Fact Families & Remainders
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Primary 3 Mathematics Learning Guide | Multiplicative Comparison, Times as Many & Comparison Bar Models
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Primary 3 Mathematics Learning Guide | Number Lines, Benchmarks, Intervals & Magnitude Reasoning
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Primary 3 Mathematics Learning Guide | Number Patterns, Sequences, Missing Numbers & Structural Reasoning
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Primary 3 Mathematics Learning Guide | Open-Ended Tasks, Multiple Methods, Generalisation & Enrichment
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Primary 3 Mathematics Learning Guide | Parent–Teacher Remediation, Intervention & Mastery Pathways
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Primary 3 Mathematics Learning Guide | Place Value Transformations, Number Representations, 1/10/100/1000 More or Less & Expanded Form
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Primary 3 Mathematics Learning Guide | Place Value, Regrouping, Addition & Subtraction Algorithms
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Primary 3 Mathematics Learning Guide | Primary 3 to Primary 4 Readiness, Transition & Handover
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Primary 3 Mathematics Learning Guide | Problem Posing, Question Generation, Conditions & Mathematical Creativity
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Primary 3 Mathematics Learning Guide | Problem-Solving Heuristics, Work Backwards, Guess & Check, Make a Table
Browse every published Post
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Secondary English Examination Performance: Diagnose Before Drilling
42–63 minutes -
Advanced Mathematics Tutorials | Quiet Students in Mathematics Tuition — When “No Questions” Does Not Mean “No Problems”
43–64 minutes -
SEC English: What G1, G2 and G3 Students Need to Be Able to Do
43–64 minutes -
Advanced Mathematics Tutorials | Mathematics Tuition Class Too Easy or Too Hard — How Parents Should Read Difficulty Fit
42–64 minutes -
Secondary 4 English: Examination-Year Control and Transfer
42–63 minutes -
Advanced Mathematics Tutorials | Mathematics Marks Improved, Then Fell Again — Diagnose Regression Without Starting Over
42–63 minutes -
Secondary 3 English: Building SEC-Ready Reading and Writing
42–62 minutes -
Advanced Mathematics Tutorials | My Child Does Not Practise Mathematics Between Tuition Lessons — What Should Change?
42–64 minutes -
Secondary 1–2 Writing: Ideas, Organisation, Voice and Accuracy
42–63 minutes -
Advanced Mathematics Tutorials | When School and Tuition Teach Mathematics Differently — How to Handle Conflicting Methods
43–64 minutes -
Secondary 1–2 Comprehension: Evidence and Inference
42–62 minutes -
Advanced Mathematics Tutorials | What to Look For in a Secondary Mathematics Trial Lesson Before You Commit
42–64 minutes -
Advanced Mathematics Tutorials | When Mathematics Tuition Creates Dependence — How to Fade Support Without Losing Marks
42–63 minutes -
Advanced Mathematics Tutorials | Mathematics Tuition Progress Review — What Parents Should Actually Be Told
42–64 minutes -
Advanced Mathematics Tutorials | Three-Student Mathematics Tuition — How to Group Students by Readiness, Pace and Learning Job
42–64 minutes -
Advanced Mathematics Tutorials | Switching Mathematics Tutors Mid-Year — How to Change Support Without Losing the Learning History
43–64 minutes -
Secondary 2 English: Reading, Writing and Language Development
42–63 minutes -
Secondary 1 English: Transition From Primary Answers to Secondary Reasoning
42–63 minutes -
Primary 1–3 Oral, Reading Fluency and Sound-to-Text Control
42–63 minutes -
Primary 1–3 Writing and Sentence Construction
42–63 minutes -
Primary 1–3 Reading Comprehension Foundations
42–63 minutes -
Primary 1–3 Vocabulary and Spelling
42–63 minutes -
Primary 1–3 Grammar Foundations
42–63 minutes -
Primary 1–3 English Syllabus and Progression
42–63 minutes -
Advanced Mathematics Tutorials | Secondary 1 vs Secondary 2 vs Secondary 3 vs Secondary 4 Mathematics Tuition — The Teaching Job Should Change
41–61 minutes -
How to Prepare for a Closed-Book University Examination | Retrieval, Problem Practice and Transfer
42–63 minutes -
Advanced Mathematics Tutorials | Should Secondary Mathematics Tuition Follow School Homework or Use Its Own Materials?
42–63 minutes -
How to Read Academic Papers as a Student | Question, Structure, Evidence and Notes
42–63 minutes -
Advanced Mathematics Tutorials | School Mathematics Pace Too Fast? How to Catch Up Without Falling Further Behind
42–63 minutes -
How to Learn From Lectures and Tutorials | Before, During and After Class
42–63 minutes -
Advanced Mathematics Tutorials | Secondary Mathematics Tuition vs Enrichment — Does the Student Need Repair, Exam Control or Stretch?
43–64 minutes -
Polytechnic Study: Projects, Internships and Independent Learning
43–64 minutes -
Advanced Mathematics Tutorials | Secondary Mathematics Mastery Checkpoint — When Is a Topic Really Ready to Move On?
5–7 minutes -
Advanced Mathematics Tutorials | Secondary Mathematics Feedback Timing — Immediate Help vs Delayed Independence
5–8 minutes -
Advanced Mathematics Tutorials | Secondary Mathematics With AI Solution Apps — Check the Mathematics Without Outsourcing the Thinking
5–7 minutes -
Advanced Mathematics Tutorials | Why Secondary Mathematics Homework Takes So Long — Diagnose the Minutes Before Telling Students to Work Faster
5–8 minutes -
University Teamwork, Presentations and Peer Assessment
43–65 minutes -
A Personal Knowledge Base for School
43–64 minutes -
Study Prompts That Preserve the Learner’s Thinking
43–64 minutes -
A Personal Knowledge Base for School
43–65 minutes -
Examination Countdown and Preparation Planner
43–65 minutes -
Study Prompts That Preserve the Learner’s Thinking
42–63 minutes -
Advanced Mathematics Tutorials | Secondary Mathematics Varied Practice — Change the Surface Without Losing the Structure
4–6 minutes -
Advanced Mathematics Tutorials | Secondary Mathematics Open-Book vs Closed-Book Practice — When Notes Help and When They Hide Weakness
4–6 minutes -
Advanced Mathematics Tutorials | Secondary Mathematics Deliberate Practice — Repair One Bottleneck Instead of Doing More of Everything
4–6 minutes -
Advanced Mathematics Tutorials | Secondary Mathematics Retrieval Practice — Recall Before You Reopen the Notes
5–7 minutes -
Advanced Mathematics Tutorials | Secondary Mathematics Confidence Calibration — Know What You Know Before the Test Knows for You
3–4 minutes -
Advanced Mathematics Tutorials | Secondary Mathematics Structural Transfer — Use What You Know in a New Question Without Memorising Every Type
3–5 minutes -
Advanced Mathematics Tutorials | Secondary Mathematics Error Prediction — Learn to See the Mistake Before It Happens
3–4 minutes -
Advanced Mathematics Tutorials | Secondary Mathematics Reverse Engineering — Learn to Work Backwards From Answers, Conditions and Solutions
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.
