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 Advanced English Vocabulary (Chinese Edition) | Lesson No.016 | Master Nominalisation and Word-Class Shifts Without Making English Heavy | 第016课:掌握名词化与词性转换,但避免英语变得笨重
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How to Learn Advanced English Vocabulary (Chinese Edition) | Lesson No.017 | Master Paraphrase, Reformulation and Meaning-Preserving Vocabulary Choices | 第017课:掌握改述、重述与不失真换词
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How to Learn Advanced English Vocabulary (Chinese Edition) | Lesson No.018 | Master Lexical Bundles and Sentence Frames Without Sounding Formulaic | 第018课:掌握词块与句型框架,但避免模板化英语
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How to Learn Advanced English Vocabulary (Chinese Edition) | Lesson No.019 | Build Domain-Specific Vocabulary Without Becoming Topic-Bound | 第019课:建立专业领域词汇,但避免只会一个领域
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How to Learn Advanced English Vocabulary (Chinese Edition) | Lesson No.020 | Master Stance, Hedging and Evaluation Vocabulary Without Overclaiming | 第020课:掌握立场、限定与评价词汇,但不过度断言
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How to Learn Advanced English Vocabulary (Chinese Edition) | Lesson No.021 | Master Lexical Cohesion, Repetition and Vocabulary Chains Without Thesaurus Overload | 第021课:掌握词汇衔接、必要重复与词汇链,但避免同义词堆砌
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How to Learn Advanced English Vocabulary (Chinese Edition) | Lesson No.022 | Read for Vocabulary Like a Linguist | 第022课:像语言研究者一样从阅读中提取高级词汇
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How to Learn Advanced English Vocabulary (Chinese Edition) | Lesson No.023 | Listen for Vocabulary Like a Linguist | 第023课:像语言研究者一样从听力与真实对话中提取高级词汇
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How to Learn Advanced English Vocabulary (Chinese Edition) | Lesson No.024 | Write to Activate Advanced Vocabulary Without Forcing “Fancy” Words | 第024课:用写作激活高级词汇,但避免为了高级而硬塞难词
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How to Learn Advanced English Vocabulary (Chinese Edition) | Lesson No.025 | Speak to Activate Advanced Vocabulary Under Real-Time Pressure | 第025课:用口语激活高级词汇,在实时压力下保持精准与自然
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How to Learn Advanced English Vocabulary (Chinese Edition) | Lesson No.026 | Control Lexical Density and Information Load Without Making English Heavy | 第026课:控制词汇密度与信息负荷,但避免英语变得拥挤难读
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How to Learn Advanced English Vocabulary (Chinese Edition) | Lesson No.027 | Master Semantic Prosody and Typical Contexts Without Misreading a Word’s “Tone” | 第027课:掌握语义倾向与典型语境,避免把词的“气质”理解错
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How to Learn Advanced English Vocabulary (Chinese Edition) | Lesson No.028 | Control Levels of Specificity Without Overgeneralising or Over-Specifying | 第028课:掌握词汇具体度与抽象层级,避免过度概括或过度细化
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How to Learn Advanced English Vocabulary (Chinese Edition) | Lesson No.029 | Master Degree, Intensity and Scalar Vocabulary Without Exaggerating | 第029课:掌握程度、强度与量级词汇,避免夸大
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How to Learn Advanced English Vocabulary (Chinese Edition) | Lesson No.030 | Master Light Verbs and Delexicalised Expressions Without Overusing “Make / Do / Take / Have / Give” | 第030课:掌握轻动词与弱化词义表达,避免 make / do / take / have / give 乱搭配
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How to Learn Advanced English Vocabulary (Chinese Edition) | Lesson No.031 | Master Comparison, Similarity and Contrast Vocabulary Without Creating False Equivalence | 第031课:掌握比较、相似与差异词汇,避免制造虚假等同
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How to Learn Advanced English Vocabulary (Chinese Edition) | Lesson No.032 | Master Cause, Contribution and Association Vocabulary Without Overclaiming Causation | 第032课:掌握因果、贡献与关联词汇,避免把相关性写成因果
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How to Learn Advanced English Vocabulary (Chinese Edition) | Lesson No.033 | Master Evidence, Findings, Claims and Conclusions Without Blurring the Stages of Reasoning | 第033课:掌握证据、发现、主张与结论词汇,避免把推理阶段混在一起
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How to Learn Advanced English Vocabulary (Chinese Edition) | Lesson No.034 | Master Conditions, Constraints, Exceptions, Caveats and Thresholds Without Turning Rules into Absolutes | 第034课:掌握条件、限制、例外、限定与阈值,避免把规则写成绝对
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How to Learn Advanced English Vocabulary (Chinese Edition) | Lesson No.035 | Master Probability, Likelihood, Possibility, Risk and Uncertainty Without Confusing What Can Happen with What Will Probably Happen | 第035课:掌握概率、可能性、风险与不确定性,避免把“可能发生”写成“很可能发生”
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How to Learn Advanced English Vocabulary (Chinese Edition) | Lesson No.036 | Master Trend, Change, Stability and Volatility Without Turning Every Movement into a Trend | 第036课:掌握趋势、变化、稳定与波动词汇,避免把每一次变化都写成趋势
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How to Learn Advanced English Vocabulary (Chinese Edition) | Lesson No.037 | Master Quantity, Proportion, Percentage, Ratio, Rate and Share Without Comparing Different Things as If They Were the Same | 第037课:掌握数量、比例、百分比、比率与占比,避免把不同指标当成同一种量
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How to Learn Advanced English Vocabulary (Chinese Edition) | Lesson No.038 | Master Average, Mean, Median, Mode, Typical and Representative Values Without Letting One Number Pretend to Describe Everyone | 第038课:掌握平均值、中位数、众数、典型值与代表性,避免让一个数字假装代表所有人
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How to Learn Advanced English Vocabulary (Chinese Edition) | Lesson No.039 | Master Distribution, Spread, Concentration and Dispersion Without Hiding How Values Are Arranged | 第039课:掌握分布、离散、集中与扩散词汇,避免只看平均值而忽略数值如何排列
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How to Learn Advanced English Vocabulary (Chinese Edition) | Lesson No.040 | Master Frequency, Prevalence, Incidence, Occurrence and Recurrence Without Confusing How Often with How Many | 第040课:掌握频率、流行率、发生率、出现与复发词汇,避免把“多常发生”与“有多少”混为一谈
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How to Learn Advanced English Vocabulary (Chinese Edition) | Lesson No.041 | Master Correlation, Association, Covariation and Independence Without Turning Relationship into Cause | 第041课:掌握相关、关联、共同变化与独立性,避免把“有关系”写成“有因果”
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How to Learn Advanced English Vocabulary (Chinese Edition) | Lesson No.042 | Master Cause, Effect, Mechanism, Confounding, Mediation and Moderation Without Overclaiming What the Evidence Shows | 第042课:掌握因果、效应、机制、混杂、中介与调节,避免让证据说得过头
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How to Learn Advanced English Vocabulary (Chinese Edition) | Lesson No.043 | Master Prediction, Forecast, Projection, Estimate and Scenario Without Turning a Possible Future into a Promise | 第043课:掌握预测、预报、推算、估计与情景,避免把“未来可能”写成“必然会发生”
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How to Learn Advanced English Vocabulary (Chinese Edition) | Lesson No.044 | Master Accuracy, Precision, Bias, Error, Reliability, Repeatability and Reproducibility Without Treating Every Consistent Number as Correct | 第044课:掌握准确度、精密度、偏差、误差、可靠性、重复性与再现性,避免把“稳定一致”误当“正确”
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How to Learn Advanced English Vocabulary (Chinese Edition) | Start Here | 高级英语词汇进阶学习
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How to Learn Basic English (Chinese Edition) | Lesson No.001 | Hello. My Name Is… | 你好,我叫……
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How to Learn Basic English (Chinese Edition) | Lesson No.002 | This Is… What Is This? | 这是……这是什么?
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How to Learn Basic English (Chinese Edition) | Lesson No.003 | I Like, I Want, I Need | 我喜欢、我想要、我需要
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How to Learn Basic English (Chinese Edition) | Lesson No.004 | Where Is It? | 它在哪里?
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How to Learn Basic English (Chinese Edition) | Lesson No.005 | Numbers and Age | 数字与年龄
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How to Learn Basic English (Chinese Edition) | Lesson No.006 | Time and Days | 时间与星期
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How to Learn Basic English (Chinese Edition) | Lesson No.007 | My Family | 我的家人
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How to Learn Basic English (Chinese Edition) | Lesson No.008 | My Daily Routine | 我的日常生活
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How to Learn Basic English (Chinese Edition) | Lesson No.009 | Food and Drink | 食物与饮料
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How to Learn Basic English (Chinese Edition) | Lesson No.010 | Can You Help Me? | 请求帮助
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How to Learn Basic English (Chinese Edition) | Lesson No.011 | Simple Questions | 简单问句
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How to Learn Basic English (Chinese Edition) | Lesson No.012 | Simple Negatives | 简单否定句
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How to Learn Basic English (Chinese Edition) | Lesson No.013 | People and Descriptions | 人物与描述
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How to Learn Basic English (Chinese Edition) | Lesson No.014 | Clothes and Colours | 衣服与颜色
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How to Learn Basic English (Chinese Edition) | Lesson No.015 | Home and Rooms | 家与房间
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How to Learn Basic English (Chinese Edition) | Lesson No.016 | Shopping and Money | 购物与金钱
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How to Learn Basic English (Chinese Edition) | Lesson No.017 | Weather and Seasons | 天气与季节
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How to Learn Basic English (Chinese Edition) | Lesson No.018 | Transport and Travel | 交通与出行
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How to Learn Basic English (Chinese Edition) | Lesson No.019 | Health and the Body | 身体与健康
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How to Learn Basic English (Chinese Edition) | Lesson No.020 | Plans and Future Time | 计划与未来时间
Browse every published Post
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How to Learn Eukaryotic Base Excision Repair: From DNA Glycosylase Base Flipping to APE1, Polymerase β and Repair-Patch Completion
10–16 minutes -
How to Learn the Wiedemann Algorithm: Krylov Sequences, Minimal Polynomials, Sparse Matrix–Vector Products and Finite-Field Linear Solving
8–11 minutes -
How to Learn Burnikel–Ziegler Division: Recursive Blocks, 2n-by-n and 3n-by-2n Division, Normalization and Fast Big-Integer Arithmetic
7–11 minutes -
How to Learn Bacterial Nucleotide Excision Repair: From UvrAB Damage Detection to Dual Incision, UvrD Removal and Transcription-Coupled Repair
9–13 minutes -
How to Learn Plant Phototropism: From Blue-Light Phototropins to NPH3 Signalling, Auxin Redistribution and Differential Growth
8–13 minutes -
How to Learn the Mitochondrial Calcium Uniporter: From ER Contact Sites to MICU1/2 Gating, Matrix Ca²⁺ and Metabolic Control
9–13 minutes -
How to Learn Nonsense-Mediated mRNA Decay: From Premature Stop Codons to UPF1, Exon-Junction Surveillance and Transcript Quality Control
9–14 minutes -
How to Learn V-ATPase and Organelle Acidification: From Rotary Proton Pumping to Lysosomal pH, Endosomal Sorting and Nutrient Signalling
9–14 minutes -
How to Learn RecA Homologous Recombination and the Bacterial SOS Response: From DNA Break Processing to Homology Search, Strand Exchange and Damage Signalling
9–14 minutes -
How to Learn COPII Vesicle Budding and ER Export: From Sar1 Activation to Cargo Selection, Coat Assembly and Golgi Delivery
9–14 minutes -
How to Learn MICOS and Mitochondrial Cristae Architecture: From Inner-Membrane Curvature to Crista Junctions, Respiratory Organisation and Contact Sites
9–14 minutes -
How to Learn the Synaptic Vesicle Cycle: From Neurotransmitter Loading to Docking, Ca²⁺-Triggered SNARE Fusion and Membrane Recycling
10–15 minutes -
How to Learn Cryo-Electron Tomography (Cryo-ET): From Tilt Series and the Missing Wedge to Cryo-FIB Lamellae, Subtomogram Averaging and In-Situ Structural Biology
10–15 minutes -
How to Learn Phloem Source–Sink Transport: From Sucrose Loading to Pressure Flow, Unloading and Whole-Plant Carbon Allocation
10–15 minutes -
How to Learn Electrical Impedance Tomography (EIT): From Boundary Voltages and Conductivity Inversion to Bedside Lung Ventilation, Perfusion and Physics-Aware Reconstruction
10–15 minutes -
How to Learn Mitochondrial TOM–TIM Protein Import: From Cytosolic Precursors to Matrix, Inner-Membrane and Intermembrane-Space Sorting
9–14 minutes -
How to Learn X-Ray Micro-Computed Tomography (Micro-CT): From Cone-Beam Projections and Reconstruction to 3D Microstructure, Phase Contrast and Operando Imaging
10–15 minutes -
How to Learn Ribonucleotide Reductases: From RNA Building Blocks to Radical Chemistry, dNTP Balance and DNA Replication
10–15 minutes -
How to Learn Positron Emission Tomography (PET): From Positron Annihilation and Coincidence Detection to SUV, Dynamic Kinetic Modelling and Total-Body PET
11–17 minutes -
How to Learn Bacterial DNA Mismatch Repair: From MutS Error Recognition to Strand Discrimination, Excision and Mutation Control
10–14 minutes -
How to Learn Dynamic Vapor Sorption (DVS): From Controlled Humidity and Microbalance Mass to Sorption Isotherms, Hysteresis, Phase Changes and Pharmaceutical Quality
9–13 minutes -
How to Learn Chloroplast TOC–TIC Protein Import: From Transit Peptides to GTPase Receptors, Envelope Translocons and Stromal Motors
10–15 minutes -
How to Learn Laser Flash Analysis (LFA): From Heat Pulses and Rear-Face Temperature Rise to Thermal Diffusivity, Conductivity, Multilayers and Battery Materials
8–13 minutes -
How to Learn Bacterial DnaK–DnaJ–GrpE Hsp70 Chaperones: From Hydrophobic-Sequence Capture to ATP-Driven Folding and Disaggregation
10–15 minutes -
How to Learn Accelerator Mass Spectrometry (AMS): From Rare Isotope Atoms and Tandem Accelerators to Radiocarbon, Cosmogenic Nuclides, Nuclear Tracers and Compact AMS
8–13 minutes -
How to Learn Type III Secretion Injectisomes: From Basal-Body Assembly to Needle Gating, Translocons and Hierarchical Effector Delivery
11–16 minutes -
How to Learn Neutron Activation Analysis (NAA): From Neutron Capture and Gamma Spectra to k₀ Standardisation, Trace Elements and Quantitative Nuclear Analysis
9–14 minutes -
How to Learn Bacterial Capsule Polysaccharide Assembly: From Wzx/Wzy Repeat Units to Wzc/Wza Export and Surface Retention
10–15 minutes -
How to Learn Peroxisomal Protein Import: From PTS1 and PTS2 Signals to PEX5/PEX7, Folded Cargo Transport and Receptor Recycling
10–14 minutes -
How to Learn Stomatal Guard-Cell Signalling: From Blue Light and ABA to Ion Channels, Turgor and Water-Use Control
9–14 minutes -
How to Learn GroEL–GroES Chaperonin Folding: From Misfolded-Protein Capture to ATP-Driven Encapsulation and Iterative Folding
9–13 minutes -
How to Learn Lipopolysaccharide Transport and the Lpt Bridge: From Inner-Membrane Extraction to Periplasmic Transit and Outer-Membrane Insertion
9–13 minutes -
How to Learn TonB-Dependent Transport: From Proton Motive Force to Siderophore Uptake, Vitamin B₁₂ and Outer-Membrane Nutrient Capture
10–15 minutes -
How to Learn Peptidoglycan Recycling: From Cell-Wall Turnover to Muropeptide Salvage, AmpC Signalling and Immune Detection
9–14 minutes -
How to Learn Carboxysomes and Bacterial Carbon-Concentrating Mechanisms: From Bicarbonate Uptake to Rubisco Microcompartments and CO₂ Fixation
10–15 minutes -
How to Learn the Lol Lipoprotein Trafficking System: From Lipid Modification to LolCDE Extraction, Periplasmic Chaperoning and Outer-Membrane Delivery
10–15 minutes -
How to Learn Bacterial Respiratory Supercomplexes: From Quinone Pools to Proton Motive Force, Branched Electron Transport and Membrane Energy Architecture
11–16 minutes -
How to Learn Bacterial Restriction–Modification Systems: From DNA Methylation to Self–Nonself Recognition, Phage Defence and Epigenetic Switching
10–15 minutes -
How to Learn Phycobilisomes and Chromatic Acclimation: From Light Harvesting to Energy Transfer, Photoprotection and Spectral Adaptation
11–16 minutes -
How to Learn Bacterial Ribosome Biogenesis: From rRNA Processing and Assembly Factors to 30S/50S Maturation and Quality Control
9–13 minutes -
How to Learn the BAM Complex and Outer-Membrane β-Barrel Assembly: From Sec Export and SurA Chaperoning to BamA Lateral Gating and Membrane Insertion
8–12 minutes -
How to Learn the Bacterial Stringent Response and (p)ppGpp: From Starved Ribosomes to Resource Reallocation, Growth Control and Stress Survival
8–12 minutes -
How to Learn MreB and the Bacterial Elongasome: From Rod-Shape Geometry to Lateral Peptidoglycan Synthesis and Cell-Width Control
6–9 minutes -
How to Learn DNA Supercoiling and Bacterial Topoisomerases: From Linking Number to Gyrase, Topoisomerase IV and Chromosome Topology
10–15 minutes -
How to Learn RNA Thermometers: From Temperature-Dependent RNA Folding to Translation Control and Bacterial Stress Adaptation
10–15 minutes -
How to Learn FtsZ and the Bacterial Divisome: From Z-Ring Treadmilling to Septal Peptidoglycan Synthesis and Cytokinesis
10–14 minutes -
How to Learn Bacterial Mechanosensitive Channels: From Osmotic Downshock to MscL/MscS Gating, Membrane Tension and Cell Survival
10–15 minutes -
How to Learn the Bacterial RNA Degradosome: From RNase E Cleavage to PNPase, RNA Helicases and BR-Body Condensates
11–16 minutes -
How to Learn Iron–Sulfur Cluster Biogenesis: From IscS–IscU and SUF Stress Systems to Cofactor Delivery and Repair
10–15 minutes -
How to Learn Bacterial Sec and Tat Protein Export: From Signal Peptides to SecYEG Translocation and Folded-Protein Transport
11–16 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.
