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.021 | Yesterday and Past Time | 昨天与过去时间
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How to Learn Basic English (Chinese Edition) | Lesson No.022 | Work and School | 工作与学校
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How to Learn Basic English (Chinese Edition) | Lesson No.023 | Phones and Messages | 电话与信息
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How to Learn Basic English (Chinese Edition) | Lesson No.024 | Invitations and Social English | 邀请与社交英语
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How to Learn Basic English (Chinese Edition) | Lesson No.025 | Reading Signs and Notices | 标志与通知
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How to Learn Basic English (Chinese Edition) | Lesson No.026 | Forms and Personal Information | 表格与个人信息
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How to Learn Basic English (Chinese Edition) | Lesson No.027 | Problems and Solutions | 问题与解决
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How to Learn Basic English (Chinese Edition) | Lesson No.028 | Review and Real-Life English | 复习与真实英语
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How to Learn Basic English (Chinese Edition) | Lesson No.029 | Listening to Everyday English | 听懂日常英语
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How to Learn Basic English (Chinese Edition) | Lesson No.030 | Reading Short Messages and Emails | 阅读短信息与邮件
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How to Learn Basic English (Chinese Edition) | Lesson No.031 | Writing Useful Short Messages | 写实用短信息
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How to Learn Basic English (Chinese Edition) | Lesson No.032 | Speaking with Confidence and Repair | 自信口语与交流修复
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How to Learn Basic English (Chinese Edition) | Lesson No.033 | Building Sentences from Chunks | 用语块造句
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How to Learn Basic English (Chinese Edition) | Lesson No.034 | Everyday Grammar Patterns | 日常英语语法模式
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How to Learn Basic English (Chinese Edition) | Lesson No.035 | Growing Vocabulary by Word Families | 用词族扩展词汇
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How to Learn Basic English (Chinese Edition) | Lesson No.036 | From A1 to A2 | 从 A1 走向 A2
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How to Learn Basic English (Chinese Edition) | Lesson No.037 | Present Perfect for Life Experience | 用现在完成时谈经历
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How to Learn Basic English (Chinese Edition) | Lesson No.038 | Longer Everyday Conversations | 更长的日常对话
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How to Learn Basic English (Chinese Edition) | Lesson No.039 | Reading Everyday Stories and Articles | 阅读日常故事与文章
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How to Learn Basic English (Chinese Edition) | Lesson No.040 | Writing Connected Paragraphs | 写连贯段落
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How to Learn Basic English (Chinese Edition) | Lesson No.041 | Making Comparisons and Choices | 比较与选择
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How to Learn Basic English (Chinese Edition) | Lesson No.042 | Giving Reasons, Opinions and Advice | 原因、观点与建议
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How to Learn Basic English (Chinese Edition) | Lesson No.043 | Past Stories with Background and Events | 用背景与事件讲过去故事
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How to Learn Basic English (Chinese Edition) | Lesson No.044 | A2 Review and Independent English | A2 复习与独立英语
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How to Learn Basic English (Chinese Edition) | Lesson No.045 | Present Perfect with For and Since | 用 for 和 since 表持续时间
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How to Learn Basic English (Chinese Edition) | Lesson No.046 | First Conditional for Real Plans | 第一条件句与真实计划
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How to Learn Basic English (Chinese Edition) | Lesson No.047 | Relative Clauses for Clearer Description | 用关系从句补充说明
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How to Learn Basic English (Chinese Edition) | Lesson No.048 | From A2 to B1 | 从 A2 走向 B1
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How to Learn Basic English (Chinese Edition) | Lesson No.049 | Second Conditional for Hypothetical Situations | 第二条件句与假设情况
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How to Learn Basic English (Chinese Edition) | Lesson No.050 | Phrasal Verbs in Everyday English | 日常英语短语动词
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How to Learn Basic English (Chinese Edition) | Lesson No.051 | Summarising and Note-Taking | 总结与笔记
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How to Learn Basic English (Chinese Edition) | Lesson No.052 | B1 Conversation and Connected Thinking | B1 对话与连贯思考
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How to Learn Basic English (Chinese Edition) | Lesson No.053 | Present Perfect Continuous | 现在完成进行时
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How to Learn Basic English (Chinese Edition) | Lesson No.054 | Reported Speech for Everyday Information | 日常转述
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How to Learn Basic English (Chinese Edition) | Lesson No.055 | Passive Voice in Everyday English | 日常英语被动语态
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How to Learn Basic English (Chinese Edition) | Lesson No.056 | B1 Reading and Writing Integration | B1 阅读写作整合
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How to Learn Basic English (Chinese Edition) | Lesson No.057 | Past Perfect for Earlier Past | 用过去完成时表达更早的过去
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How to Learn Basic English (Chinese Edition) | Lesson No.058 | Modals of Possibility and Deduction | 可能性与推断
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How to Learn Basic English (Chinese Edition) | Lesson No.059 | Formal and Informal English | 正式与非正式英语
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How to Learn Basic English (Chinese Edition) | Lesson No.060 | B1 Review and Real-World Performance | B1 复习与真实表现
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How to Learn Basic English (Chinese Edition) | Lesson No.061 | Gerunds and Infinitives in Everyday English | 动名词与不定式
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How to Learn Basic English (Chinese Edition) | Lesson No.062 | Third Conditional for Past Hypotheticals | 第三条件句与过去假设
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How to Learn Basic English (Chinese Edition) | Lesson No.063 | Linking Ideas Across Longer Texts | 长文本中的观点连接
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How to Learn Basic English (Chinese Edition) | Lesson No.064 | From B1 to B2 | 从 B1 走向 B2
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How to Learn Basic English (Chinese Edition) | Lesson No.065 | Mixed Conditionals and Time Relationships | 混合条件句与时间关系
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How to Learn Basic English (Chinese Edition) | Lesson No.066 | Advanced Modal Meaning and Stance | 高级情态意义与立场
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How to Learn Basic English (Chinese Edition) | Lesson No.067 | Paraphrasing Without Changing Meaning | 不改变原意的改写
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How to Learn Basic English (Chinese Edition) | Lesson No.068 | B2 Discussion, Argument and Evidence | B2 讨论、论证与证据
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How to Learn Basic English (Chinese Edition) | Lesson No.069 | Advanced Relative Clauses and Reduced Clauses | 高级关系从句与简化从句
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How to Learn Basic English (Chinese Edition) | Lesson No.070 | Nominalisation and Information Density | 名词化与信息密度
Browse every published Post
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The Tutor Handbook Vol No.0007 | Learning Architect — Integrate the Whole Learning System Without Making the Learner Dependent on the Tutor
35–53 minutes -
The Tutor Handbook Vol No.0006 | Performance Coach — Convert Available Knowledge Into Reliable Output Under Pressure
35–52 minutes -
The Tutor Handbook Vol No.0005 | Route Designer — Sequence Learning So Effort Arrives in the Right Order
35–52 minutes -
The Tutor Handbook Vol No.0004 | Diagnostic Tutor — Find the First Weak Link Before Adding More Work
24–37 minutes -
The Tutor Handbook Vol No.0003 | Drill Builder — Build Fluency Without Mindless Repetition
24–36 minutes -
The Tutor Handbook Vol No.0002 | Explainer — Make Difficult Ideas Clear Without Replacing the Student’s Thinking
38–57 minutes -
The Tutor Handbook Vol No.0001 | Homework Helper — From Task Completion to Better Learning Routines
33–49 minutes -
How to Track PSLE Science Learning Progress Without Letting One Practice-Paper Score Decide What You Know
9–14 minutes -
How to Paraphrase a PSLE Science Question Without Changing What the Science Says
13–19 minutes -
How to Make a Scientific Estimate in PSLE Science Without Pretending It Is a Measurement
11–16 minutes -
How to Tell Classification From Ranking in PSLE Science
9–13 minutes -
How to Use Scientific Constraints to Rule Out Impossible PSLE Science Answers
11–17 minutes -
How to Increase PSLE Science Practice Difficulty by Changing One Reasoning Demand at a Time
10–16 minutes -
How to Defend a PSLE Science Explanation With Evidence and Still Be Ready to Revise It
12–18 minutes -
How to Compare Two Scientific Models in PSLE Science and Decide Which One Is More Useful
10–16 minutes -
How to Design an Indirect Measurement in PSLE Science When the Target Cannot Be Measured Directly
11–17 minutes -
How to Track the Same Scientific Quantity When Its Role Changes Between Stages of a PSLE Science Question
8–11 minutes -
How to Tell “Explain How” From “Explain Why” in PSLE Science Without Memorising Two Answer Templates
7–11 minutes -
How to Ask What Would Have to Change for a Wrong PSLE Science Answer to Become Correct
7–11 minutes -
How to Turn a PSLE Science Explanation Into a New Question That Tests the Same Mechanism
8–12 minutes -
How to Practise for the Revised 2026 PSLE Science Structured Questions Without Memorising New Answer Templates
10–16 minutes -
How to Tell an Investigation Constraint From a Scientific Variable in PSLE Science
9–14 minutes -
How to Practise PSLE Science Without Topic Labels So You Learn to Choose the Concept Yourself
10–14 minutes -
How to Use a PSLE Science Pre-Question Before Studying Without Turning It Into Guessing
9–14 minutes -
How to Tell Whether a PSLE Science Question Can Actually Be Answered by an Investigation
9–13 minutes -
How to Infer a Missing PSLE Science Graph Axis Label From the Investigation Evidence
8–12 minutes -
How to Tell Whether a Number in a PSLE Science Diagram Is a Label, a Measurement or a Sequence Marker
8–11 minutes -
How to Choose the Right Reference Set-Up for a PSLE Science Comparison
8–12 minutes -
How to Choose Which Variable to Change When Several Factors Could Affect a PSLE Science Outcome
8–12 minutes -
How to Divide Similar Specimens Between PSLE Science Set-Ups Without Building In a Starting Bias
7–10 minutes -
How to Tell a Temporary PSLE Science Response From a Sustained Change
7–11 minutes -
How to Read an Analogue PSLE Science Scale Without Parallax Error
7–11 minutes -
How to Use an Intermediate PSLE Science Measurement to Locate Where a Process Changed
10–16 minutes -
How to Tell Whether Two Scientific Factors Form a Chain or Act Separately in a PSLE Science Explanation
11–16 minutes -
How to Tell Whether Two PSLE Science Data Sets Measured the Same Outcome in Comparable Ways
12–17 minutes -
How to Break a Two-Option Tie in PSLE Science MCQ Without Guessing
11–17 minutes -
How to Keep a PSLE Science Claim at the Right Evidence Level: One Reading, One Trial, One Set-Up or the Whole Investigation
12–17 minutes -
How to Tell Stronger Evidence From a Bigger Scientific Effect in PSLE Science
8–11 minutes -
How to Check Whether a PSLE Science Method Improvement Creates a New Flaw
8–12 minutes -
How to Tell Whether a Later PSLE Science Diagram Replaces the Earlier Set-Up or Continues It
8–12 minutes -
How to Tell Whether a PSLE Science Investigation Is Comparing Two Cases or Testing a Relationship Across Several Conditions
8–11 minutes -
How to Tell a Scientific Example From Evidence in a PSLE Science Answer
12–18 minutes -
How to Test Whether a PSLE Science Correction Transfers to a New Representation
11–16 minutes -
How to Make a PSLE Science Prediction at the Right Precision Without Guessing an Exact Number
9–14 minutes -
How to Decide Whether Two PSLE Science Measurements Are Different Enough for the Scale to Support a Real Difference
9–14 minutes -
How to Decide Whether a PSLE Science Investigation Should Measure the Whole System or a Sample
8–12 minutes -
How to Decide Whether to Measure a PSLE Science Change Directly or Calculate It From Before-and-After Measurements
7–11 minutes -
How to Check Whether a PSLE Science Explanation Accounts for All the Important Observations
7–11 minutes -
How to Spot a Circular PSLE Science Explanation That Uses the Outcome as Its Own Cause
8–12 minutes -
How to Tell Natural Specimen Variation From Measurement Variation in PSLE Science Results
6–9 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.
