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 to Learn Basic English (Chinese Edition) | Lesson No.071 | Listening to Implication, Attitude and Discourse | 听懂暗示、态度与篇章结构
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How to Learn Basic English (Chinese Edition) | Lesson No.072 | B2 Reading and Writing Performance | B2 阅读写作表现
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How to Learn Basic English (Chinese Edition) | Lesson No.073 | Inversion and Emphasis | 倒装与强调
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How to Learn Basic English (Chinese Edition) | Lesson No.074 | Cleft Sentences and Information Focus | 分裂句与信息焦点
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How to Learn Basic English (Chinese Edition) | Lesson No.075 | Multi-Source Synthesis and Source Positioning | 多来源综合与来源定位
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How to Learn Basic English (Chinese Edition) | Lesson No.076 | From B2 to C1 | 从 B2 走向 C1
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How to Learn Basic English (Chinese Edition) | Lesson No.077 | Advanced Hedging and Precision | 高级模糊限制与精确表达
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How to Learn Basic English (Chinese Edition) | Lesson No.078 | Cohesion Across Long Arguments | 长篇论证中的衔接
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How to Learn Basic English (Chinese Edition) | Lesson No.079 | Reading Assumptions, Bias and Framing | 阅读隐含前提、偏向与框架
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How to Learn Basic English (Chinese Edition) | Lesson No.080 | C1 Discussion and Analytical Writing | C1 讨论与分析写作
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How to Learn Basic English (Chinese Edition) | Lesson No.081 | Advanced Reporting Verbs and Source Distance | 高级转述动词与来源距离
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How to Learn Basic English (Chinese Edition) | Lesson No.082 | Lexical Bundles and Academic Phraseology | 高频学术语块与短语结构
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How to Learn Basic English (Chinese Edition) | Lesson No.083 | Listening to Nuance, Irony and Pragmatic Meaning | 听懂细微语气、反讽与语用意义
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How to Learn Basic English (Chinese Edition) | Lesson No.084 | C1 Review and Independent Performance | C1 复习与独立表现
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How to Learn Basic English (Chinese Edition) | Lesson No.085 | Advanced Collocation and Semantic Precision | 高级搭配与语义精度
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How to Learn Basic English (Chinese Edition) | Lesson No.086 | Reading Complex Evidence and Method Claims | 阅读复杂证据与方法主张
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How to Learn Basic English (Chinese Edition) | Lesson No.087 | Speaking Across Registers and Audiences | 跨语体与受众口语表达
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How to Learn Basic English (Chinese Edition) | Lesson No.088 | From C1 Toward C2 | 从 C1 走向 C2
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How to Learn Basic English (Chinese Edition) | Lesson No.089 | Precision in Metaphor, Analogy and Figurative Language | 比喻、类比与修辞语言的精确控制
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How to Learn Basic English (Chinese Edition) | Lesson No.090 | Synthesising Across Disciplines | 跨学科综合
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How to Learn Basic English (Chinese Edition) | Lesson No.091 | Advanced Editing for Meaning, Style and Register | 高级意义、风格与语体编辑
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How to Learn Basic English (Chinese Edition) | Lesson No.092 | C2-Direction Review and Expert Communication | C2 方向复习与专家沟通
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How to Learn Basic English (Chinese Edition) | Lesson No.093 | Negotiating Definitions, Standards and Criteria | 协商定义、标准与判据
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How to Learn Basic English (Chinese Edition) | Lesson No.094 | Expert Listening and Multi-Layer Source Tracking | 专家听力与多层来源追踪
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How to Learn Basic English (Chinese Edition) | Lesson No.095 | Writing Executive, Public and Technical Versions | 行政、公众与技术版本写作
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How to Learn Basic English (Chinese Edition) | Lesson No.096 | C2-Direction Capstone and Lifelong Language Maintenance | C2 方向顶点与终身语言维护
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How to Learn Basic English (Chinese Edition) | Lesson No.097 | Advanced Translation and Mediation Without Meaning Drift | 高级翻译与调解中的意义保持
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How to Learn Basic English (Chinese Edition) | Lesson No.098 | Negotiation, Consensus and Productive Disagreement | 协商、共识与建设性分歧
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How to Learn Basic English (Chinese Edition) | Lesson No.099 | Writing for Policy, Decisions and Recommendations | 政策、决策与建议写作
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How to Learn Basic English (Chinese Edition) | Lesson No.100 | Mastery Review: From Beginner to Independent Expert English | 总复习:从零基础到独立专家英语
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How to Learn Basic English (Chinese Edition) | Lesson No.101 | Research Reading and Verification | 研究阅读与验证
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How to Learn Basic English (Chinese Edition) | Lesson No.102 | Communicating Uncertainty and Confidence | 表达不确定性与置信度
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How to Learn Basic English (Chinese Edition) | Lesson No.103 | High-Stakes Professional Communication | 高风险专业沟通
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How to Learn Basic English (Chinese Edition) | Lesson No.104 | Expert Maintenance Cycle and Deliberate Practice | 专家维护循环与刻意练习
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How to Learn Basic English (Chinese Edition) | Lesson No.105 | Incident Reports, Postmortems and Learning Reviews | 事故报告、复盘与学习回顾
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How to Learn Basic English (Chinese Edition) | Lesson No.106 | Explaining Models, Assumptions and Limits | 解释模型、假设与边界
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How to Learn Basic English (Chinese Edition) | Lesson No.107 | Facilitating Meetings, Panels and Expert Q&A | 主持会议、讨论与专家问答
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How to Learn Basic English (Chinese Edition) | Lesson No.108 | Annual Language Audit and Personal Expert Portfolio | 年度语言审计与个人专家作品集
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How to Learn Basic English (Chinese Edition) | Lesson No.109 | Writing Playbooks, SOPs and Decision Guides | 编写操作手册、SOP 与决策指南
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How to Learn Basic English (Chinese Edition) | Lesson No.110 | Communicating Metrics, Dashboards and Trends | 解释指标、仪表板与趋势
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How to Learn Basic English (Chinese Edition) | Lesson No.111 | Coaching, Feedback and Performance Conversations | 教练、反馈与表现对话
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How to Learn Basic English (Chinese Edition) | Lesson No.112 | Long-Term Expert Maintenance Review | 长期专家维护复盘
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How to Learn Basic English (Chinese Edition) | Lesson No.113 | Writing Requirements, Specifications and Acceptance Criteria | 编写需求、规格与验收标准
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How to Learn Basic English (Chinese Edition) | Lesson No.114 | Knowledge Handoffs, Succession and Institutional Memory | 知识交接、传承与组织记忆
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How to Learn Basic English (Chinese Edition) | Lesson No.115 | Cross-Cultural Professional Communication | 跨文化专业沟通
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How to Learn Basic English (Chinese Edition) | Lesson No.116 | Expert Systems Review: Language as Operational Infrastructure | 专家系统复盘:把语言作为操作基础设施
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How to Learn Basic English (Chinese Edition) | Lesson No.117 | Communicating Risk, Controls and Assurance | 风险、控制与保证沟通
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How to Learn Basic English (Chinese Edition) | Lesson No.118 | Writing Change Plans, Rollouts and Rollbacks | 编写变更计划、发布与回滚
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How to Learn Basic English (Chinese Edition) | Lesson No.119 | Decision Logs, Governance and Accountability | 决策记录、治理与问责
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How to Learn Basic English (Chinese Edition) | Lesson No.120 | Expert Maintenance Capstone: Operating in English Across Systems | 专家维护顶点:用英语跨系统运作
Browse every published Post
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PSLE Science Reality Lab Vol No.580 | “Freezing Level = 3,000 m” — Is Everything Above That Height Frozen?
9–13 minutes -
Advanced Science Tutorials | Science Homework Help for Parents Without Giving the Answer
11–16 minutes -
PSLE Science Reality Lab Vol No.579 | “RONI = +0.8°C” — Is the Whole Tropical Pacific 0.8°C Warmer?
10–15 minutes -
Advanced Additional Mathematics Tutorials | A-Math Functions and Graphs — The Hidden Spine From Quadratics to Calculus
10–15 minutes -
Advanced Additional Mathematics Tutorials | Why A-Math Feels Hard After Secondary 2 — The Seven Weak Links Behind Falling Marks
11–16 minutes -
Advanced Mathematics Tutorials | Secondary G1, G2 and G3 Mathematics: Algebra, Problem Solving and the Secondary Reset
20–29 minutes -
Advanced Science Tutorials | 12-Week PSLE Science Revision Plan for Parents and Primary 6 Students
13–19 minutes -
Advanced English Tutorials | PSLE to SEC G1, G2 and G3 English: A Parent Roadmap
17–26 minutes -
Advanced Mathematics Tutorials | G1, G2 and G3 Mathematics Explained for Secondary School Parents
17–26 minutes -
Advanced Mathematics Tutorials | How to Survive PSLE Mathematics Without Turning Revision Into Panic
12–18 minutes -
Advanced English Tutorials | How to Improve English Writing Skills Step by Step
19–28 minutes -
Advanced Additional Mathematics Tutorials | How to Prepare for Secondary 3 A-Math in Secondary 2
10–15 minutes -
Advanced Additional Mathematics Tutorials | SEC G1, G2 and G3 Mathematics Pathways: Where Additional Mathematics Fits
9–14 minutes -
Advanced Science Tutorials | How to Study Science Effectively Without Re-reading Notes
18–27 minutes -
Advanced Mathematics Tutorials | Primary 4 Mathematics: Fractions, Word Problems and the First Big Jump
12–18 minutes -
Advanced English Tutorials | Reading Comprehension Strategies Parents Can Use at Home
17–26 minutes -
Advanced Additional Mathematics Tutorials | Primary 1–6 Mathematics Skills That Later Power A-Math
10–15 minutes -
Advanced Additional Mathematics Tutorials | From PSLE Mathematics to A-Math: The Foundation Parents Should Build Before Secondary 3
11–17 minutes -
Advanced English Tutorials | How to Improve English at Home From Primary 1 to Primary 6
21–31 minutes -
Advanced Mathematics Tutorials | Primary 1 Mathematics Foundations That Prevent Later Gaps
13–19 minutes -
PSLE Science Reality Lab Vol No.578 | “50.0 ± 0.5” — Is the True Value Guaranteed to Be Between 49.5 and 50.5?
8–11 minutes -
PSLE Science Reality Lab Vol No.577 | “Bootstrap Support = 95” — Is That a 95% Chance the Branch Is True?
8–12 minutes -
PSLE Science Reality Lab Vol No.576 | “Volcanic Ash Polygon” — Is Ash Present Everywhere Inside the Shape?
8–12 minutes -
PSLE Science Reality Lab Vol No.575 | “This Soil Map Polygon Is Labelled Loam” — Is Every Spot Inside It the Same Soil?
9–14 minutes -
PSLE Science Reality Lab Vol No.574 | “This Electron Micrograph Is Blue and Green” — Were the Cells Really Those Colours?
16–24 minutes -
PSLE Science Reality Lab Vol No.573 | “34-kt Wind Radius = 150 nm NE” — Does Every Place Within 150 nm Have 34-kt Winds?
11–16 minutes -
PSLE Science Reality Lab Vol No.572 | “This Star Has Eight Bright Spikes” — Are Those Real Beams Shooting From the Star?
12–18 minutes -
PSLE Science Reality Lab Vol No.571 | “The Air-Quality Map Is Orange Here” — Was AQI Measured at Every Point in the Orange Area?
13–19 minutes -
PSLE Science Reality Lab Vol No.570 | “Flame Pictogram” — Does That Mean the Chemical Will Catch Fire Immediately?
16–24 minutes -
PSLE Science Reality Lab Vol No.569 | “Peak Area = 92%” — Is the Sample Automatically 92% Pure?
16–24 minutes -
PSLE Science Reality Lab Vol No.568 | “Magnetic Declination = 12° East” — Is the Compass 12% Wrong?
11–16 minutes -
PSLE Science Reality Lab Vol No.567 | “This Area Is Blue on the Geologic Map” — Is the Rock Really Blue?
13–19 minutes -
PSLE Science Reality Lab Vol No.566 | “Satellite Map Shows an Algal Bloom” — Does That Prove Toxin Is Present at Every Coloured Pixel?
18–27 minutes -
PSLE Science Reality Lab Vol No.565 | “Satellite Shows Smoke Overhead” — Does That Prove Ground-Level PM2.5 Is High There?
11–16 minutes -
PSLE Science Reality Lab Vol No.564 | “Tsunami Warning” — Does That Mean a Destructive Wave Has Already Been Observed?
10–16 minutes -
PSLE Science Reality Lab Vol No.563 | “Cloud Mask: Confident Clear” — Does That Prove the Pixel Was Completely Cloud-Free?
12–18 minutes -
PSLE Science Reality Lab Vol No.562 | “Lake Residence Time = 10 Years” — Does Every Water Molecule Stay for Ten Years?
18–27 minutes -
PSLE Science Reality Lab Vol No.561 | “This Bond Line Is Twice as Long in the Molecule Drawing” — Is the Real Bond Twice as Long?
12–18 minutes -
PSLE Science Reality Lab Vol No.560 | “These Two Species Sit Next to Each Other at the Tips” — Are They the Closest Relatives?
13–19 minutes -
PSLE Science Reality Lab Vol No.559 | “Peak Wave Period = 8 s” — Did Every Wave Arrive Exactly Eight Seconds Apart?
13–19 minutes -
PSLE Science Reality Lab Vol No.558 | “Depth to Water = 12 m” — Is the Aquifer Only 12 m Deep?
10–14 minutes -
PSLE Science Reality Lab Vol No.557 | “Genome Assembly N50 = 1 Mb” — Is the Genome 50% Accurate or Complete?
8–12 minutes -
PSLE Science Reality Lab Vol No.556 | “Human Reference Genome” — Is This the DNA Sequence of One Average Person?
10–14 minutes -
PSLE Science Reality Lab Vol No.555 | “The Satellite Map Shows Rainbow Rings” — Did the Ground Form Real Coloured Bands?
12–19 minutes -
PSLE Science Reality Lab Vol No.554 | “The Arrow Is Longer” — Does That Mean the Flow Is Faster?
13–20 minutes -
PSLE Science Reality Lab Vol No.553 | “Thermostat Set to 22°C” — Is the Whole Room Exactly 22°C?
14–21 minutes -
PSLE Science Reality Lab Vol No.552 | “10,000 Occurrence Records” — Were 10,000 Individual Organisms Counted?
10–15 minutes -
PSLE Science Reality Lab Vol No.551 | “QPF = 25 mm” — Does That Mean a 25% Chance of Rain or 25 mm Falling Right Now?
10–16 minutes -
PSLE Science Reality Lab Vol No.546 | “Both Centrifuges Ran at 10,000 rpm” — Did the Samples Experience the Same Centrifugal Effect?
11–17 minutes -
PSLE Science Reality Lab Vol No.545 | “This Road Line Is 1 mm Wide on the Map” — Is the Real Road Exactly That Wide at Scale?
14–21 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.
