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
-
Secondary 4 Mathematics Learning Guide | Completing the Square, Quadratic Formula and Graphical Solutions
-
Secondary 4 Mathematics Learning Guide | Congruence, Similarity, Scale Drawings and Area-Volume Ratios
-
Secondary 4 Mathematics Learning Guide | Coordinate Geometry and Transformations as Representation
-
Secondary 4 Mathematics Learning Guide | Coordinate Geometry: Segment Length, Straight-Line Equations and Geometric Problem Solving
-
Secondary 4 Mathematics Learning Guide | Cumulative Frequency, Box Plots and Standard Deviation
-
Secondary 4 Mathematics Learning Guide | Data Collection, Classification, Tabulation and Choosing Statistical Representations
-
Secondary 4 Mathematics Learning Guide | Dimensional Reasoning: Units, Compound Units, Scale, Area–Volume Conversion and Error Detection
-
Secondary 4 Mathematics Learning Guide | Direct and Inverse Proportion, Scale and Rate Models
-
Secondary 4 Mathematics Learning Guide | Distance-Time and Speed-Time Graphs: Motion, Rate and Interpretation
-
Secondary 4 Mathematics Learning Guide | Error Analysis, Corrections and Full-Paper Recovery
-
Secondary 4 Mathematics Learning Guide | Formulae Provided, Working Required: Formula-Sheet Intelligence, Essential Working, Accuracy and Calculator Control
-
Secondary 4 Mathematics Learning Guide | Fractional Equations Reduced to Linear and Quadratic Equations
-
Secondary 4 Mathematics Learning Guide | Fractional Indices, Roots and Exact Powers
-
Secondary 4 Mathematics Learning Guide | Geometrical Constructions, Bisectors and Constraint Diagrams
-
Secondary 4 Mathematics Learning Guide | Geometry, Trigonometry and Measurement as a Constraint System
-
Secondary 4 Mathematics Learning Guide | Gradient of Curves: Tangents, Local Rate of Change and Graphical Estimation
-
Secondary 4 Mathematics Learning Guide | Grouped Data: Mean, Standard Deviation, Quartiles, Percentiles and Comparing Distributions
-
Secondary 4 Mathematics Learning Guide | Histograms, Statistical Diagrams and Misleading Data
-
Secondary 4 Mathematics Learning Guide | Indices, Standard Form and Exact Number Structure
-
Secondary 4 Mathematics Learning Guide | Linear Graphs, Gradient, Intercepts and Rate of Change
-
Secondary 4 Mathematics Learning Guide | Linear Inequalities, Number Lines and Boundary Reasoning
-
Secondary 4 Mathematics Learning Guide | Mathematical Notation as an Operational Language: Equality, Approximation, Proportion, Inequalities, Sets and Vectors
-
Secondary 4 Mathematics Learning Guide | Matrices, Data and Matrix Operations
-
Secondary 4 Mathematics Learning Guide | Mean, Median, Mode, Range and Comparing Data Sets
-
Secondary 4 Mathematics Learning Guide | Mensuration, Radians and Composite Solids
-
Secondary 4 Mathematics Learning Guide | Past-Paper Forensics: Question Archetypes, First Failure, Error Ledgers and Transfer Retests
-
Secondary 4 Mathematics Learning Guide | Personal and Household Finance: Interest, Taxation, Instalments, Utilities and Money Exchange
-
Secondary 4 Mathematics Learning Guide | Power, Reciprocal and Exponential Graphs
-
Secondary 4 Mathematics Learning Guide | Prime Factors, HCF, LCM and Divisibility Structure
-
Secondary 4 Mathematics Learning Guide | Probability Event Logic: When to Add, Multiply, Subtract from One or Change the Denominator
-
Secondary 4 Mathematics Learning Guide | Probability, Combined Events and Tree Diagrams
-
Secondary 4 Mathematics Learning Guide | Pythagoras, Right-Triangle Trigonometry and Three-Dimensional Reasoning
-
Secondary 4 Mathematics Learning Guide | Quadratic Equations and Algebraic Fractions
-
Secondary 4 Mathematics Learning Guide | Quadratic Functions: Forms, Roots, Turning Points and Symmetry
-
Secondary 4 Mathematics Learning Guide | Ratio, Percentage, Rates and Financial Mathematics
-
Secondary 4 Mathematics Learning Guide | Real-World Geometry: Floor Plans, Surveying, Navigation and Interpretation
-
Secondary 4 Mathematics Learning Guide | Reverse Percentages, Percentage Comparison and Repeated Change
-
Secondary 4 Mathematics Learning Guide | Set Language, Venn Diagrams and Counting
-
Secondary 4 Mathematics Learning Guide | Simultaneous Linear Equations, Intersections and Modelling
-
Secondary 4 Mathematics Learning Guide | Statistics, Probability and Real-World Problems Under Exam Conditions
-
Secondary 4 Mathematics Learning Guide | The Final Paper 2 Real-World Scenario: Model, Solve, Verify and Communicate
-
Secondary 4 Mathematics Learning Guide | Vectors as Representation: Directed Segments, Position Vectors, Magnitude, Scalar Multiples and Translation
-
Secondary 4 Mathematics Learning Guide | Vectors, Ratios and Collinearity
-
Secondary 4 Mathematics Punggol | GCE 2026 to SEC 2027 Legacy Entry
-
Secondary 4 Mathematics Sengkang | GCE 2026 or SEC 2027? Know Your Cohort
-
Secondary 4 Mathematics Sengkang | GCE 2026 to SEC 2027 Transition
-
Secondary 4 Mathematics Sengkang | The Voyage of Water
-
Secondary 4 Mathematics Tuition Sengkang | SEC 2027+ Exam Preparation
-
Secondary 4 Mathematics Tutor | Curie Series | Integration, SEC and the Handover Beyond Secondary School
-
Secondary 4 Science Tutor | Curie Series | SEC Integration, Evidence and the Handover Beyond Secondary School
Browse every published Post
-
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.
