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
-
How to Learn Basic English Vocabulary (Chinese Edition) | Lesson No.050 | Sports, Games and Competition | 体育、游戏与比赛英语词汇
-
How to Learn Basic English Vocabulary (Chinese Edition) | Lesson No.051 | Appointments and Scheduled Services | 预约与定时服务英语词汇
-
How to Learn Basic English Vocabulary (Chinese Edition) | Lesson No.052 | Post, Parcels and Deliveries | 邮寄、包裹与配送英语词汇
-
How to Learn Basic English Vocabulary (Chinese Edition) | Lesson No.053 | Everyday Banking and Payments | 日常银行与付款英语词汇
-
How to Learn Basic English Vocabulary (Chinese Edition) | Lesson No.054 | Bills, Utilities and Household Services | 账单、水电与家庭服务英语词汇
-
How to Learn Basic English Vocabulary (Chinese Edition) | Lesson No.055 | Measurements, Units and Everyday Quantities | 测量、单位与日常数量英语词汇
-
How to Learn Basic English Vocabulary (Chinese Edition) | Lesson No.056 | Household Appliances and Controls | 家用电器与控制英语词汇
-
How to Learn Basic English Vocabulary (Chinese Edition) | Lesson No.057 | Renting a Home and Moving In | 租房与入住英语词汇
-
How to Learn Basic English Vocabulary (Chinese Edition) | Lesson No.058 | Subscriptions, Memberships and Renewals | 订阅、会员与续费英语词汇
-
How to Learn Basic English Vocabulary (Chinese Edition) | Lesson No.059 | Product Labels, Packaging and Dates | 商品标签、包装与日期英语词汇
-
How to Learn Basic English Vocabulary (Chinese Edition) | Lesson No.060 | Office Documents, Files and Equipment | 办公文件、档案与设备英语词汇
-
How to Learn Basic English Vocabulary (Chinese Edition) | Lesson No.061 | Countries, Nationalities and Languages | 国家、国籍与语言英语词汇
-
How to Learn Basic English Vocabulary (Chinese Edition) | Lesson No.062 | Personal Care and Toiletries | 个人护理与洗漱用品英语词汇
-
How to Learn Basic English Vocabulary (Chinese Edition) | Lesson No.063 | Library, Books and Borrowing | 图书馆、书籍与借阅英语词汇
-
How to Learn Basic English Vocabulary (Chinese Edition) | Lesson No.064 | Job Applications and Employment Basics | 求职申请与就业基础英语词汇
-
How to Learn Basic English Vocabulary (Chinese Edition) | Lesson No.065 | Courses, Classes and Enrolment | 课程、课堂与报名英语词汇
-
How to Learn Basic English Vocabulary (Chinese Edition) | Lesson No.066 | Haircuts, Barbers and Salon Services | 理发、理发店与美发服务英语词汇
-
How to Learn Basic English Vocabulary (Chinese Edition) | Lesson No.067 | Meetings, Agendas and Workplace Coordination | 会议、议程与工作协调英语词汇
-
How to Learn Basic English Vocabulary (Chinese Edition) | Lesson No.068 | Neighbours, Roommates and Shared Living | 邻居、室友与共同居住英语词汇
-
How to Learn Basic English Vocabulary (Chinese Edition) | Lesson No.069 | Museums, Galleries and Exhibitions | 博物馆、美术馆与展览英语词汇
-
How to Learn Basic English Vocabulary (Chinese Edition) | Lesson No.070 | Pharmacy and Medicine-Label Vocabulary | 药房与药品标签基础英语词汇
-
How to Learn Basic English Vocabulary (Chinese Edition) | Lesson No.071 | School Reports, Homework and Parent–Teacher Communication | 学校报告、作业与家校沟通英语词汇
-
How to Learn Basic English Vocabulary (Chinese Edition) | Lesson No.072 | Emergency Signs and Asking for Help | 紧急标识与求助英语词汇
-
How to Learn Basic English Vocabulary (Chinese Edition) | Lesson No.073 | Say, Tell, Speak and Talk | 说话动词辨析与练习
-
How to Learn Basic English Vocabulary (Chinese Edition) | Lesson No.074 | Hear, Listen, See, Look and Watch | 听与看动词辨析与练习
-
How to Learn Basic English Vocabulary (Chinese Edition) | Start Here | 零基础英语词汇入门
-
How to Learn Basic English | Start Here
-
How to Measure Mathematics Improvement | Better Than One Test Score
-
How to Read a Primary Report Book and WA Scores
-
How to Read Your Child’s Prelim Paper: The 20-Minute Mark Audit
-
How to Revise for End-of-Year Exams in Primary 3, 4 and 5
-
How to Stop Rushing Through Schoolwork | A One-Week Checking Reset
-
How to Study When Four Papers Land in One Week
-
How to Use Past-Year Papers Without Wasting Them
-
How to Work as a Tutor | A Professional Guide to Diagnosing, Teaching, Reviewing and Releasing Support
-
How to Work With a Tutor | A Student Guide to Getting Help and Becoming More Independent
-
How to Work With Your Child’s Tutor | A Parent Guide to Better Tuition and Independent Learning
-
How Tone, Attitude and Viewpoint Shape Interpretation | English Tuition Sengkang
-
How Transitive and Intransitive Verbs Control Direct and Indirect Objects | English Learning Guide
-
How Tuition Works | From Diagnosis to Independent Performance
-
How Understanding Works in Learning | Meaning, Structure, Explanation, Transfer and Reconstruction
-
How Unexpected Results Reveal Hidden Variables in Science | Science Tuition Sengkang
-
How Units and Measurement Protect Mathematical Meaning | Mathematics Tuition Sengkang
-
How Very, Too, Enough, So, Such and Other Degree Expressions Change the Strength of a Description | English Learning Guide
-
How Vocabulary Becomes Writing Power | English Tuition Sengkang
-
How Vocabulary Works Across Reading and Writing | From Word Encounter to Precise Use
-
How We Know Learning Has Really Held | From Practice to Transfer and Examination
-
How Worked Examples Work in Learning | Seeing the Route, Explaining the Decisions and Then Carrying It Alone
-
How Working Memory Works in Learning | Holding, Updating, Linking and Losing the Problem
-
How Writing Moves From Sentence to Paragraph to Essay | English Tuition Sengkang
Browse every published Post
-
PSLE Science Reality Lab Vol No.381 | “As Found: Out of Tolerance; As Left: In Tolerance” — Which State Describes the Measurements Made Before Calibration?
8–12 minutes -
PSLE Science Reality Lab Vol No.380 | “Dead Band = 0.2 Units” — Can the Measured Quantity Change While the Display Stays the Same?
7–10 minutes -
PSLE Science Reality Lab Vol No.379 | “Hysteresis = 0.5% FS” — Can the Same Input Give Different Readings Depending on Which Direction It Came From?
8–12 minutes -
PSLE Science Reality Lab Vol No.378 | “The Sensor Passed Its Zero Check” — Is It Accurate Across the Whole Range?
9–13 minutes -
PSLE Science Reality Lab Vol No.377 | “n = 3 Technical Replicates” — Were There Three Independent Samples?
9–13 minutes -
PSLE Science Reality Lab Vol No.376 | “20 mg/kg Dry Weight” — Is That 20 mg/kg in the Wet Sample Too?
8–12 minutes -
PSLE Science Reality Lab Vol No.375 | “24-Hour Composite Sample = 5 mg/L” — Was the Water 5 mg/L All Day?
9–14 minutes -
PSLE Science Reality Lab Vol No.373 | “High-Impact Journal” — Does the Journal Name Prove This Result Is Stronger?
9–14 minutes -
PSLE Science Reality Lab Vol No.372 | “The Abstract Says It Worked” — Have We Seen Enough of the Study to Judge the Claim?
9–14 minutes -
PSLE Science Reality Lab Vol No.371 | “Independently Tested” — Which Part of the Evidence Was Actually Independent?
11–17 minutes -
PSLE Science Reality Lab Vol No.370 | “GPS Altitude = 100 m” — Is That Automatically 100 m Above Mean Sea Level?
10–14 minutes -
PSLE Science Reality Lab Vol No.369 | “UL 94 V-0” — Does That Mean the Plastic Is Fireproof?
9–13 minutes -
PSLE Science Reality Lab Vol No.368 | “DC Fast Charging Up to 250 kW” — Will It Charge at 250 kW the Whole Time?
10–15 minutes -
PSLE Science Reality Lab Vol No.367 | “Tested to MIL-STD-810H” — Was the Product Tested Against Every Harsh Environment?
10–15 minutes -
PSLE Science Reality Lab Vol No.366 | “Contour Line = 100 m” — Is Everything Inside the Line Exactly 100 m High?
13–19 minutes -
PSLE Science Reality Lab Vol No.365 | “Nitrate = 10 mg/L as N” — Is There 10 mg of Nitrate Ion in Each Litre?
8–13 minutes -
PSLE Science Reality Lab Vol No.364 | “230 V AC” — Is the Voltage 230 V at Every Instant?
9–13 minutes -
PSLE Science Reality Lab Vol No.363 | “VEI 6” — Is It Six Times as Explosive as VEI 1?
10–15 minutes -
How to Improve Time Management | Protect High-Value Work, Budget Attention and Finish What Matters
8–12 minutes -
How to Improve Curiosity | Turn Information Gaps Into Better Questions, Exploration and Learning
7–11 minutes -
How to Improve Confidence | Build Accurate Self-Trust From Evidence, Practice and Recovery
7–10 minutes -
How to Improve Questioning | Ask Better Questions, Find Better Information and Use the Answer
9–13 minutes -
Exact Determinant Calculation: A Worked Casebook for Exact Linear Algebra
4–6 minutes -
How to Improve Students | Why Students Start Exams Too Slowly Even When They Know the Work
14–22 minutes -
How to Improve Students | Why Untimed Accuracy Disappears When the Clock Starts
15–22 minutes -
How to Improve Students | Why Students Answer the Topic Instead of the Exact Question
16–24 minutes -
How to Improve Students | Why Students Practise Only the Hardest Questions and Lose Ordinary Marks
18–27 minutes -
How to Improve Students | Why Students Use the Right Method on the Wrong Question
6–8 minutes -
How to Improve Students | Why Students Cannot Restart a Question After Getting Stuck
6–9 minutes -
How to Improve Students | Why Students Fix Easy Errors Before High-Cost Errors
6–9 minutes -
How to Improve Students | Why Students Spend Too Long Checking Answers They Already Know
7–10 minutes -
PSLE Science Reality Lab Vol No.362 | “Galaxy Redshift z = 2” — Does the Galaxy Look Twice as Red?
9–14 minutes -
PSLE Science Reality Lab Vol No.361 | “High Signal-to-Noise Ratio” — Does a Cleaner Signal Prove the Measurement Is Accurate?
9–14 minutes -
PSLE Science Reality Lab Vol No.360 | “Tsunami Runup = 5 m” — Was the Offshore Wave 5 m Tall?
9–14 minutes -
PSLE Science Reality Lab Vol No.359 | “Sea Ice Extent = 10 Million km²” — Is Every Square Kilometre Fully Covered by Ice?
10–15 minutes -
How to Improve Goal Setting | Turn Ambition Into a Target, a Next Action and Evidence of Progress
14–21 minutes -
PSLE Science Reality Lab Vol No.358 | “Cloud Ceiling = 500 ft” — Are All the Clouds 500 ft Above the Ground?
8–12 minutes -
PSLE Science Reality Lab Vol No.357 | “Battery Specific Energy = 250 Wh/kg” — Does a 2 kg Battery Always Store 500 Wh?
9–14 minutes -
PSLE Science Reality Lab Vol No.356 | “U = 0.4°C, k = 2” — Does k = 2 Mean the Thermometer Can Be Wrong by 2°C?
8–11 minutes -
PSLE Science Reality Lab Vol No.355 | “ShakeMap Intensity = VI” — Was It a Magnitude 6 Earthquake?
8–12 minutes -
PSLE Science Reality Lab Vol No.354 | “Baseflow Index = 60%” — Is 60% of the River Groundwater at Every Moment?
8–11 minutes -
PSLE Science Reality Lab Vol No.353 | “D50 = 20 µm” — Are Half the Particles Exactly 20 µm Wide?
8–12 minutes -
PSLE Science Reality Lab Vol No.352 | “LAeq = 70 dB” — Was the Sound 70 dB the Whole Time?
8–12 minutes -
PSLE Science Reality Lab Vol No.351 | “100 MPGe” — Did the Electric Car Use One Gallon of Gasoline to Travel 100 Miles?
8–13 minutes -
PSLE Science Reality Lab Vol No.350 | “Beaufort Force 8” — Is the Wind Blowing at 8 m/s?
9–13 minutes -
PSLE Science Reality Lab Vol No.349 | “Solar Panel Efficiency = 22%” — Does the Other 78% Become Waste Heat?
9–14 minutes -
PSLE Science Reality Lab Vol No.348 | “This Global Satellite Image Was Taken Today” — Was Every Pixel Captured at the Same Moment?
8–12 minutes -
PSLE Science Reality Lab Vol No.347 | “Ocean Heat Content Anomaly = +100 ZJ” — Is the Ocean 100°C Hotter?
10–15 minutes -
PSLE Science Reality Lab Vol No.346 | “Drag Coefficient = 0.30” — Does That Mean 30% of the Force Is Drag?
14–21 minutes -
PSLE Science Reality Lab Vol No.345 | “CAPE = 3000 J/kg” — Is a Severe Thunderstorm Guaranteed?
10–14 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.
