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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How Writing Works for a Student | From Purpose to Reader-Ready Text
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I Am Brave: The First Term of Secondary 1
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I Am Brave: The Primary 6 Year
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I Am Brave: The Secondary 4 Year
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Independent Adulthood Tutor | Curie Series | Building a Life That Can Run
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Independent Attempt | What the Learner Can Carry Without Hidden Help
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Information & Media Literacy Tutor | Curie Series | Learning to Keep Representations Correctable
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Interface Verification | Can the Parts Work Together?
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Is a 3-Pax Class the Right Fit for My Child?
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Is This Tuition Class the Right Fit? | How Parents Can Evaluate Small-Group Tuition in Sengkang
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JC1 English Tutor | Curie Series | From Secondary English to General Paper and Academic Argument
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JC1 Mathematics Tutor | Curie Series | From Secondary Mathematics to Calculus, Statistics and Modelling
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JC1 Science Tutor | Curie Series | From Secondary Science to A-Level Disciplinary Depth
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JC2 English Tutor | Curie Series | Evidence, Argument and A-Level Independence
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JC2 Mathematics Tutor | Curie Series | A-Level Integration, Mathematical Judgement and Independence
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JC2 Science Tutor | Curie Series | A-Level Integration, Practical Evidence and Scientific Independence
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June Holiday Revision Plan 2027 for P5, P6, Sec 3 and Sec 4
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Keep Steward | Learner Capability and Independence Agent
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Keymaster | Evidence and Permission Agent
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Knowing When to Ask for Help | Marie Curie Series | Where Independent Learning Should Hand Back to Support
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Later-Career & Stewardship Tutor | Curie Series | Expertise, Succession and Responsibility
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Later-Life Learning Tutor | Curie Series | Maintain, Adapt, Grow and Contribute
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Launch Commit Criteria | What Must Be True Before We Proceed?
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Leadership & People Responsibility Tutor | Curie Series | Learning to Carry Responsibility for Others
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Learning & Reskilling Tutor | Curie Series | How Adults Build New Capability
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Learning Castle Admission Schema
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Learning Castle Agent Guild | Operations Council
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Learning Castle AI Discovery Schema | Machine Entry and Interpretation
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Learning Castle Boot Protocol | Runtime Load Order for AI
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Learning Castle Edge Schema | Roads, Bridges and Return Paths
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Learning Castle Fort Schema | Domain Ownership and Capability Runtime
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Learning Castle Gate Schema | Inputs, Keys and Permitted Transitions
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Learning Castle Inheritance and Fallback Schema
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Learning Castle Key Schema | Evidence, Permission and Confidence Keys
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Learning Castle Node Schema | Uniform Machine Declaration for Every Site Object
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Learning Castle Portcullis Schema | Hard Stops and Protected Boundaries
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Learning Castle Registry | Canonical Objects and Routes
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Learning Castle Return Schema | Capability, Ownership and World Return
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Learning Castle Route Schema | Gate Conditions and Typed Paths
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Learning Castle Runtime Closure | Stable Castle Kernel
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Learning Castle Scout Schema
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Learning Castle Sentry Schema
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Learning Castle State Schema | Learner, Routing and Evidence States
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Learning Castle Supersession and Retirement Schema
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Learning Castle Validation Schema | Runtime Integrity and Self-Checks
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Learning Castle Watchtower Schema
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Learning Castle | Logic Learning Gate System
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Learning Drift | Marie Curie Series | Why a Student Can Look Fine Before Results Fall
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Learning Hall | I Am Brave | Courage, Learning & eduKate Sengkang
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Learning Practice and Review | Find Your Next Step
Browse every published Post
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How to Complete a PSLE Science Explanation When the Question Gives You the Middle Step
13–19 minutes -
How to Track the Same PSLE Science Object When Its Name Changes Between Text, Diagram and Table
10–16 minutes -
How to Turn a PSLE Science Observation Into a Testable Scientific Question
10–15 minutes -
How to Use Because, So and Therefore in PSLE Science Without Reversing Cause and Effect
8–12 minutes -
How to Keep a PSLE Science Starting Set-Up Separate From Its Later Results
9–13 minutes -
How to Find a PSLE Science Condition Hidden in a Caption, Label or Table Heading
10–14 minutes -
How to Tell Whether a PSLE Science Condition Starts a Process, Allows It, or Changes How Much Happens
9–13 minutes -
How to Compare Two PSLE Science MCQ Options That Differ by Only One Scientific Word
8–12 minutes -
How to Tell What the Experimenter Changed From What Changed Because of It in PSLE Science
9–13 minutes -
How to Track What “It”, “This”, “They” and “These” Refer To in a PSLE Science Question
9–13 minutes -
How to Test a PSLE Science MCQ Option That Starts With a True Fact but Ends With the Wrong Conclusion
10–14 minutes -
How to Ask a Useful PSLE Science Clarification Question When You Are Stuck
10–15 minutes -
How to Select Relevant Apparatus in a PSLE Science Question Without Using Every Item
9–14 minutes -
How to Tell Which PSLE Science Conditions Apply to All Set-Ups and Which Apply to Only One
9–13 minutes -
How to Recover When No PSLE Science MCQ Option Matches Your First Prediction
10–14 minutes -
How to Explain a Difference Between Two PSLE Science Set-Ups Without Explaining Only One Side
9–14 minutes -
How to Tell Whether a PSLE Science Graph Shows Change Over Time or Comparison Across Test Conditions
10–14 minutes -
How to Track a Changing Comparison Reference Across a Multi-Part PSLE Science Question
9–14 minutes -
How to Learn From a High-Scoring PSLE Science Practice Paper Without Assuming Every Answer Is Secure
11–17 minutes -
How to Compare PSLE Science Data When One Series Ends Earlier Than the Other
11–17 minutes -
How to Read a PSLE Science Graph When the Axes Are Swapped Without Reversing the Relationship
12–18 minutes -
How to Test the Reverse of a PSLE Science Relationship Without Assuming It Must Be True
14–20 minutes -
How to Read PSLE Science Process Stages Without Assuming Each Stage Takes the Same Time
10–15 minutes -
How to Read a PSLE Science Table With Grouped Headings Without Losing Which Column Means What
9–13 minutes -
How to Read PSLE Science Data With Two Conditions at Once Without Comparing the Wrong Pair
10–14 minutes -
How to Track What Enters, Leaves and Remains in a PSLE Science System
12–17 minutes -
How to Design a PSLE Science Solution From a Problem Without Jumping to the First Idea
15–22 minutes -
How to Compare Two PSLE Science Cases Through a Common Reference Without Pretending They Were Directly Compared
14–21 minutes -
How to Read Overlapping PSLE Science Graph Lines Without Losing Track of Separate Data Series
11–16 minutes -
How to Connect PSLE Science Topics Instead of Memorising Them as Separate Chapters
12–17 minutes -
Top 10 Problem-Framing Skills Worth Learning
19–29 minutes -
How to Tell Whether a PSLE Science Condition Applies at the Start, Throughout the Process or Only at the End
13–20 minutes -
How to Tell Whether Parts in a PSLE Science Diagram Are Connected or Just Drawn Close Together
12–18 minutes -
How to Tell “Time to Reach” From “Value After the Same Time” in PSLE Science
12–17 minutes -
How to Read a PSLE Science Process That Branches Into Different Outcomes Depending on the Condition
12–18 minutes -
Top 10 Goal-Setting Skills Worth Learning
13–20 minutes -
Top 10 Collaboration Skills Worth Learning
11–16 minutes -
Top 10 Communication Skills Worth Learning
11–17 minutes -
Top 10 Explanation Skills Worth Learning
17–25 minutes -
Top 10 Synthesis Skills Worth Learning
15–23 minutes -
Top 10 Verification Skills Worth Learning
17–25 minutes -
How to Tell Whether a PSLE Science Measurement Is the Outcome or a Check on a Controlled Condition
13–19 minutes -
How to Read a PSLE Science Time Graph When the Condition Changes Partway Through
11–17 minutes -
How to Read an Average PSLE Science Result Without Treating It as Every Trial or Every Specimen
11–17 minutes -
How to Tell Whether a PSLE Science Sequence Shows One Object Changing or Several Different Objects
11–17 minutes -
How to Tell the Condition You Set From the Condition a PSLE Science Specimen Actually Experiences
13–20 minutes -
How to Keep Paired PSLE Science Labels and Values Aligned Without Swapping Which Result Belongs to Which Set-Up
11–16 minutes -
How to Read a PSLE Science Result That Returns to Its Starting Value Without Concluding Nothing Happened
11–16 minutes -
How to Move From Open-Book to Closed-Book PSLE Science Practice Without Removing Support Too Early
13–20 minutes -
How to Analyse a PSLE Science Process Without Turning It Into a List of Stages
12–18 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.
