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
-
Primary 4 Science Learning Guide | Mixed Concepts and Integrated Reasoning
-
Primary 4 Science Learning Guide | Mixed Practice Workshop with Worked Answers
-
Primary 4 Science Learning Guide | Multi-Step Problem Solving
-
Primary 4 Science Learning Guide | No Change, Null Results and What You Can Conclude
-
Primary 4 Science Learning Guide | Observation, Inference, Conclusion and Evidence
-
Primary 4 Science Learning Guide | Observer Expectations, Confirmation Bias and Independent Checks
-
Primary 4 Science Learning Guide | Open-Ended Answer Construction
-
Primary 4 Science Learning Guide | Oral Explanation, Teach-Back and Questioning
-
Primary 4 Science Learning Guide | Order Effects, Carryover and Resetting Between Trials
-
Primary 4 Science Learning Guide | Pattern Recognition, Trends and Relationships
-
Primary 4 Science Learning Guide | Photographs, Video and Time-Lapse Observation
-
Primary 4 Science Learning Guide | Physical Model-Making, Testing and Revision
-
Primary 4 Science Learning Guide | Plant and Digestive Systems Misconception Clinic
-
Primary 4 Science Learning Guide | Plant and Human Systems
-
Primary 4 Science Learning Guide | Plant Parts, Functions and Whole-Plant Reasoning
-
Primary 4 Science Learning Guide | Practical Tests and Performance Tasks Under Real Conditions
-
Primary 4 Science Learning Guide | Prediction, What-If Reasoning and Transfer
-
Primary 4 Science Learning Guide | Procedure Writing and Investigation Design
-
Primary 4 Science Learning Guide | Question Reading, Command Words and Answer Precision
-
Primary 4 Science Learning Guide | Rate of Change, Change Per Unit Time and Fair Time Comparisons
-
Primary 4 Science Learning Guide | Raw Data, Derived Values and the Evidence Trail
-
Primary 4 Science Learning Guide | Reasonableness, Estimation and Sanity Checks
-
Primary 4 Science Learning Guide | Relationships, Evidence and Explanation
-
Primary 4 Science Learning Guide | Repeated Trials, Reliability and Consistency
-
Primary 4 Science Learning Guide | Replication, Reproducibility and Independent Group Checks
-
Primary 4 Science Learning Guide | Researching with Books, Websites and Secondary Sources
-
Primary 4 Science Learning Guide | Safe Mini-Investigations at Home
-
Primary 4 Science Learning Guide | Same Specimen Before–After vs Different Similar Specimens
-
Primary 4 Science Learning Guide | Sampling, Representative Cases and Avoiding Cherry-Picking
-
Primary 4 Science Learning Guide | Science Journals and Observation Logs
-
Primary 4 Science Learning Guide | Science Learning Trails and Field Observation
-
Primary 4 Science Learning Guide | Science Portfolios, Evidence of Growth and Reflection
-
Primary 4 Science Learning Guide | Science Project Planning, Evidence and Presentation
-
Primary 4 Science Learning Guide | Science Reading Comprehension and Dense Question Stems
-
Primary 4 Science Learning Guide | Scientific Communication and Presenting Findings
-
Primary 4 Science Learning Guide | Scientific Diagrams, Labels, Arrows and Annotation
-
Primary 4 Science Learning Guide | Scientific Models and Their Limits
-
Primary 4 Science Learning Guide | Scientific Vocabulary, Precision and Language
-
Primary 4 Science Learning Guide | Seeking Clarification, Resolving Ambiguity and Asking the Next Useful Question
-
Primary 4 Science Learning Guide | Self-Assessment, Rubrics and Success Criteria
-
Primary 4 Science Learning Guide | Self-Explanation and Metacognitive Checking
-
Primary 4 Science Learning Guide | Simulations and Virtual Investigations
-
Primary 4 Science Learning Guide | Small Differences, Scale Intervals and Honest Precision
-
Primary 4 Science Learning Guide | Testable Questions, Hypotheses and Scientific Curiosity
-
Primary 4 Science Learning Guide | Treatment Duration, Observation Time and Measurement Intervals
-
Primary 4 Science Learning Hub | Relationships, Systems, Matter, Light, Heat & Evidence
-
Primary 4 Science Readiness | The Capability Floors Needed Before P5
-
Primary 4 Science Sengkang | Relationships & Evidence Diagnostic
-
Primary 4 Science Sengkang | The Voyage of Water
-
Primary 4 Science Tuition at Punggol | Building Strong Foundations with eduKate
Browse every published Post
-
Learning G3 A-Math with Bishan Tutor
20–30 minutes -
Learning G3 Mathematics with Bishan Tutor
21–31 minutes -
Learning G3 English with Bishan Tutor
22–33 minutes -
What is PG3 for Secondary Schools | Sec 1 English
8–11 minutes -
What is PG2 for Secondary Schools | Sec 1 English
9–13 minutes -
Learning G2 Science with Bishan Tutor
22–33 minutes -
Learning G2 A-Math with Bishan Tutor
22–33 minutes -
What is PG1 for Secondary Schools | Sec 1 English
11–17 minutes -
Learning G2 Mathematics with Bishan Tutor
22–33 minutes -
Learning G2 English with Bishan Tutor
22–33 minutes -
What is G3 for Secondary Schools | Sec 1 English
13–20 minutes -
What is G2 for Secondary Schools | Sec 1 English
14–21 minutes -
What is G1 for Secondary Schools | Sec 1 English
13–20 minutes -
How to Perform in PSLE | Learner’s Guide Vol 0076 | Keep the Definition Fixed — Do Not Let the Same Word Change Meaning Midway
24–37 minutes -
How to Perform in PSLE | Learner’s Guide Vol 0075 | Science: Being Near a Substance Does Not Prove It Entered the Organism
25–38 minutes -
How to Perform in PSLE | Learner’s Guide Vol 0074 | Mathematics: Before You Compare Fractions or Percentages, Check Whether the Wholes Are the Same
21–32 minutes -
How to Perform in PSLE | Learner’s Guide Vol 0073 | English: Rebuild the Event Timeline When the Passage Tells the Story Out of Order
23–34 minutes -
Return to Normal Learning Casebook | Know When to Stop Repairing and Move Forward
147–220 minutes -
Learning Evidence Portfolio | Build a Record of What You Can Actually Do
143–214 minutes -
Learning Stability Casebook | Know When a Repair Has Become Reliable
142–214 minutes -
Learning Priority Casebook | Choose What to Study Next From Evidence, Not Panic
143–214 minutes -
Cross-Subject Inquiry Casebook | Connect Science, Mathematics and English Without Losing the Learning
148–221 minutes -
Evidence and Claims Casebook | From Observation and Data to a Defensible Conclusion
146–219 minutes -
Measurement Casebook for Student Inquiry | From Quantity to Trustworthy Evidence
144–216 minutes -
Student Inquiry Casebook | Turn a Real-World Question Into a Testable Learning Project
144–217 minutes -
Group Project to Individual Capability Casebook | Prove What You Can Do Without the Team
95–142 minutes -
Laboratory Practical Assessment Casebook | Observation, Measurement, Decision and Recovery
94–141 minutes -
University Oral Examination and Viva Casebook | Defend Reasoning Under Live Questions
93–140 minutes -
University Open-Book Examination Casebook | Find, Apply, Verify and Finish Under Time
42–64 minutes -
How to Prepare for an Open-Book University Examination | Find, Apply, Verify and Finish
42–62 minutes -
Primary 5 English Learning Guide | Question Demand and Answer Form Control: Read the Task Before You Write
54–81 minutes -
How to Perform in PSLE | Learner’s Guide Vol 0072 | When Two Answers Both Look Plausible, Find the Constraint That Makes Only One Legal
27–40 minutes -
How to Perform in PSLE | Learner’s Guide Vol 0071 | Science: Separate Stimulus, Sense Organ and Response Before You Explain the Chain
21–32 minutes -
How to Perform in PSLE | Learner’s Guide Vol 0070 | Mathematics: Keep Every “Per” Attached to the Quantity It Is Dividing By
20–30 minutes -
How to Perform in PSLE | Learner’s Guide Vol 0069 | English: Know When Two Noun Phrases Name the Same Person, Place or Thing
22–33 minutes -
PSLE Science Reality Lab Vol No.274 | “Water Quality Index = 85” — Is the Water 85% Clean?
14–21 minutes -
The Tutor Handbook Vol No.0027 | The Confirmation — How a Tutor Tests Whether a Breakthrough Has Become the Learner’s New Normal
8–12 minutes -
Advanced Mathematics Tutorials | Siblings in the Same Mathematics Tuition System — Same Tutor, Same Class, or Separate Support?
27–41 minutes -
Advanced Mathematics Tutorials | Should Students Message Their Mathematics Tutor Between Lessons? Use Support Without Creating Dependence
42–63 minutes -
Advanced Mathematics Tutorials | Should Parents Sit In a Mathematics Tuition Lesson? Observation Without Distorting the Learning
42–63 minutes -
Advanced Mathematics Tutorials | Changing School Mid-Year — How Mathematics Tuition Maps the New Sequence Without Restarting
39–58 minutes -
Advanced Mathematics Tutorials | When the School Mathematics Teacher Changes Mid-Year — Keep the Learner Stable While Methods, Pace and Homework Change
42–63 minutes -
G2 SEC Learner’s Guide Master Index | Complete Series
3–5 minutes -
G2 SEC Earlier Volumes Index | Vol 0001–0131
14–21 minutes -
G2 SEC Learner’s Guide Hub | Vol 0132–0175 | Examination Performance, English, Mathematics and Science
6–9 minutes -
How to Perform in the new G2 SEC Examinations | Learner’s Guide Vol 0175 | Science: Cross-Method Measurement Agreement — Check an Important Quantity by a Second Valid Route
21–32 minutes -
How to Perform in the new G2 SEC Examinations | Learner’s Guide Vol 0174 | Mathematics: Sandwich Bounds — Trap the Answer Between a Lower and Upper Limit Before You Trust It
23–35 minutes -
How to Perform in the new G2 SEC Examinations | Learner’s Guide Vol 0173 | English: Deixis Control — Resolve Who Is I, Where Is Here and When Is Now
23–35 minutes -
How to Perform in the new G2 SEC Examinations | Learner’s Guide Vol 0172 | Handoff Contracts — Pass the Right Information From One Reasoning Step to the Next
22–34 minutes -
How to Perform in the new G2 SEC Examinations | Learner’s Guide Vol 0171 | Science: Manipulation Checks — Verify That the Independent Variable Actually Changed
23–34 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.
