DASKEREL deep lessons
Structured explanations, worked reasoning, guided practice, understanding checks, evidence tasks and spaced review.
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Country and pathway library · controlled beta
Senior secondary — technical and vocational library — འབྲུག
Each subject has a concept guide, worked workbook, practical or applied protocol, case study and evidence checklist. DASKEREL originals remain separated from official, licensed and partner sources.
Timed mock assessments
Original constructed-response tasks with delayed answer guidance, explicit criteria and no easily guessed multiple-choice pattern.
21-school bridges
Links from country study pathways into DASKEREL cloud, technology, business, law, finance, health, education, engineering, creative and sustainability schools.
Official-source register
Country, authority, year, syllabus and examination evidence recorded separately before any national-alignment statement is made.
Open learning resources
Legally accessible readings and tools reviewed for relevance, accessibility, licence, date and low-bandwidth use.
Learner evidence library
Projects, portfolios and reflections controlled by the learner, with authorship, feedback and revision history.
worked workbook
Business operations and service-performance workbook
Original process, capacity, utilisation, service-level, first-contact resolution, stock, variance and weighted-decision problems with sensitivity and limitation checks.
Evidence use: Keep definitions, source dates, first calculations, corrections, assumptions, segmented results and a conditional interpretation rather than presenting one headline measure as proof.
Open connected lessonpractical protocol
Controlled procurement and supplier-review protocol
A desk-based workflow for need, specification, pre-agreed criteria, quotations, due diligence, conflicts, scoring, delegated approval, ordering, receipt and invoice matching.
Evidence use: Use synthetic supplier evidence unless authorised, record every conflict and exception, and do not treat the workbook as authority to commit funds or select a real supplier.
Open connected lessoncase study
Customer service, people and records case study
Connects service demand, accessibility, complaints, fair people decisions, data minimisation, retention, access control and incident escalation through competing interpretations.
Evidence use: Submit an evidence-led recommendation that separates aggregate operational information from protected personal records and documents fairness, limitations and review authority.
Open connected lessonevidence checklist
Business change, finance-control and release checklist
Checks objectives, ownership, revisions, balanced measures, budget, segregation of duties, three-way matching, privacy, accessibility, training, risk, rollback and approval.
Evidence use: Attach the independently reviewed checklist to the improvement pack and keep every unresolved financial, privacy, fairness, document-control or authority gap as a release blocker.
Open connected lessonworked workbook
Double-entry, adjustments and financial-statements workbook
Original journal, ledger, trial-balance, correction, accrual, prepayment, depreciation, inventory, receivables and financial-statement problems with linked control checks.
Evidence use: Keep source references, account classifications, first entries, corrections, cross-casts, adjustment explanations and reviewer sign-off so a balanced total is never treated as sufficient proof.
Open connected lessonpractical protocol
Bank, cash and month-end reconciliation protocol
A desk-based workflow for cash-book corrections, timing differences, unexplained items, supplier-bank changes, duplicate detection, cut-off, approval, review and close control.
Evidence use: Use synthetic statements and identifiers, retain an unresolved-item log and escalate unknown, duplicate or unauthorised activity rather than forcing a reconciliation through suspense.
Open connected lessoncase study
Profit, cash flow, budget and ratio decision case
Connects accrual profit, working capital, credit terms, cash timing, budget variance, margins, liquidity, collection evidence and sensitivity analysis through competing interpretations.
Evidence use: Submit a conditional interpretation with consistent definitions, source dates, sensitivity results, operational context and limitations; do not present it as tax, audit or investment advice.
Open connected lessonevidence checklist
Accounting evidence, ethics and release checklist
Checks source integrity, cut-off, classification, journals, reconciliations, access, segregation, formula changes, revisions, privacy, backups, reviewer independence and approval.
Evidence use: Attach the independently reviewed checklist to the reporting pack and keep every unresolved evidence, control, ethical, privacy, definition or authority issue as a release blocker.
Open connected lessonworked workbook
Soil, nutrient, crop and water calculation workbook
Original unit-conversion, soil-sampling, plant-population, nutrient-balance, irrigation, yield, loss, gross-margin and sensitivity problems with independent checks.
Evidence use: Keep source dates, field zones, units, first calculations, corrections, assumptions, uncertainty and reviewer sign-off so a numerical result is never treated as an authorised field recommendation.
Open connected lessonpractical protocol
Field monitoring, biosecurity and environmental sampling protocol
A planning workflow for representative sampling, calibration, pest and disease observations, water and soil evidence, hygiene, chain of custody, stop criteria and escalation.
Evidence use: Complete in a supplied dataset or under competent supervision; it does not authorise chemical use, animal treatment, machinery operation, water abstraction or environmental release.
Open connected lessoncase study
Resilient production and land-stewardship decision case
Connects crop and livestock performance, soil cover, water, biodiversity, climate hazards, labour, welfare, community impacts, costs and sensitivity analysis through competing interpretations.
Evidence use: Submit a conditional option appraisal with a declared baseline, data-quality limits, distributional impacts, reversal triggers and questions requiring land, environmental, veterinary or agronomic authority.
Open connected lessonevidence checklist
Agriculture, environment, safety and release checklist
Checks site authority, sampling, calibration, units, soil and water protection, pest and biosecurity controls, animal welfare, machinery and chemical boundaries, privacy, accessibility, revisions and competent approval.
Evidence use: Attach the independently reviewed checklist to the portfolio pack and keep every unresolved safety, environmental, welfare, legal, evidence or approval item as an implementation blocker.
Open connected lessonworked workbook
IP addressing, subnetting and network-design workbook
Original IPv4 prefix, mask, network, broadcast, usable-range, VLSM, gateway, longest-prefix and introductory IPv6 design problems with independent checks.
Evidence use: Keep labelled first calculations, corrections, capacity checks, assumptions and an accessible address plan without including real credentials or sensitive production addresses.
Open connected lessonpractical protocol
Secure network build and verification protocol
A simulator-first protocol for VLANs, routes, DHCP, DNS, TCP and UDP services, least-privilege policy, logging, configuration versions, backup and rollback.
Evidence use: Complete only in an authorised sandbox or under explicit competent supervision; the protocol does not permit scanning, interception, credential testing or production changes.
Open connected lessoncase study
Routing, services and fault-isolation case study
Connects physical, VLAN, addressing, routing, DNS, transport, firewall and application evidence through competing hypotheses and discriminating tests.
Evidence use: Submit a traceable diagnosis that separates observation, inference and conclusion and records test scope, time, source, limitations and rejected hypotheses.
Open connected lessonevidence checklist
Computing and network release checklist
Checks topology, capacity, address conflicts, routes, services, access policy, individual administration, patching, logs, accessibility, backup, rollback, revisions and approvals.
Evidence use: Attach the independently reviewed checklist to the portfolio pack and keep every unresolved security, authorisation, revision or recovery item as a release blocker.
Open connected lessonworked workbook
Construction measurement and quantity take-off workbook
Original setting-out, reduced-level, excavation, concrete, masonry, opening, waste-allowance and drainage-gradient problems with independent checks.
Evidence use: Keep controlled source dimensions, unit-labelled calculations, deductions, allowances, corrections and a conditional conclusion that distinguishes estimating from approved design.
Open connected lessonpractical protocol
Site investigation, setting-out and quality protocol
A desk-based protocol for constraints, services, benchmarks, survey control, tolerances, inspections, test methods, hold points, nonconformities and revisions.
Evidence use: Complete and independently review the protocol before any supervised site activity; it does not authorise entry, excavation, surveying near hazards or construction work.
Open connected lessoncase study
Materials, concrete, moisture and durability case study
Connects material traceability, concrete water control and curing, masonry, timber, steel, moisture exposure, durability, maintenance and environmental assumptions.
Evidence use: Submit a traceable option appraisal that records specifications, evidence quality, climate and exposure assumptions, unresolved tests and competent-review requirements.
Open connected lessonevidence checklist
Construction safety, inspection and release checklist
Checks revisions, ground and utility evidence, temporary works, excavation, lifting, height, silica, materials, drainage, inspection records, accessibility and competent approvals.
Evidence use: Attach the independently reviewed checklist to the pre-construction pack and treat every unresolved safety, technical, statutory or approval item as a release blocker.
Open connected lessonworked workbook
Mechanical power-transmission calculation workbook
Original gear, belt and chain problems covering speed ratio, angular speed, torque, power, efficiency, slip and service-limit comparisons.
Evidence use: Keep diagrams, unit-labelled first calculations, corrections, independent checks and a conditional conclusion that distinguishes the ideal model from measured operation.
Open connected lessonpractical protocol
Condition monitoring and fault-isolation protocol
A controlled desk-based sequence for baselines, load and speed, temperature, vibration, noise, alignment, lubrication, hypotheses, discriminating tests and stop criteria.
Evidence use: Complete and review the plan before supervised inspection; it does not authorise live adjustment, guard removal, lifting or work on stored energy.
Open connected lessoncase study
Bearing, lubrication and maintenance-strategy case study
Connects bearing symptoms, lubricant selection and contamination with preventive, corrective and condition-based maintenance decisions.
Evidence use: Submit a traceable decision that separates symptom, failure mode and root cause and records assumptions, trends, manufacturer evidence and unresolved limitations.
Open connected lessonevidence checklist
Mechanical isolation, guarding and release checklist
Checks isolation, stored energy, guards, fasteners, alignment, lubrication, lifting boundaries, instruments, revisions, accessibility and competent approval.
Evidence use: Attach the independently reviewed checklist to the maintenance pack and treat every unresolved safety, evidence or approval item as a release blocker.
Open connected lessonworked workbook
DC circuit analysis and power-budget workbook
Original series-parallel, Kirchhoff, voltage-drop, tolerance, power and energy problems with independent balance checks.
Evidence use: Keep labelled schematics, first calculations, corrections, verification checks and a conclusion that distinguishes modelled from measured evidence.
Open connected lessonpractical protocol
Low-voltage measurement and fault-isolation protocol
A controlled sequence for expected values, instrument mode and range, lead placement, isolation, discharge, test order, stop criteria and result logging.
Evidence use: Complete the plan before supervised work; it does not authorise mains testing, live work or defeating a protective device.
Open connected lessoncase study
Sensors, switching and digital-control case study
Connects sensor range, signal conditioning, transistor or relay switching, logic thresholds, firmware versions and fail-safe behaviour.
Evidence use: Submit a traceable design decision with calculations, assumptions, simulation evidence, revision links and unresolved limitations.
Open connected lessonevidence checklist
Electrical release, safety and accessibility checklist
Checks ratings, protection, isolation, instruments, thermal limits, revisions, accessible indicators, competent approval and prohibited work boundaries.
Evidence use: Attach the reviewed checklist to the portfolio pack and record every unresolved safety, evidence or approval item as a release blocker.
Open connected lessonworked workbook
Orthographic, isometric and section-view workbook
Original projection problems covering aligned views, line conventions, isometric axes, cutting planes, hatching and view-consistency checks.
Evidence use: Keep construction lines, first attempt, corrected views, reviewer notes and a written explanation of how the views describe one component.
Open connected lessonworked workbook
Scale, dimension and tolerance calculation pack
Practice with enlargement and reduction scales, datum dimensions, limits, clearances, interference and defensible fit decisions.
Evidence use: Submit unit-labelled calculations and distinguish drawing size, true size, specified tolerance and professional fit approval.
Open connected lessonpractical protocol
Controlled CAD modelling and revision protocol
A desk-based workflow for units, origins, layers, constraints, named features, revisions, exports, file naming and independent checking.
Evidence use: Retain the editable source, stable review export, change record and reviewer decision; the protocol does not authorise manufacture.
Open connected lessonevidence checklist
Drawing release and accessibility checklist
Checks projection, view agreement, sections, dimensions, datums, tolerances, title block, revision, accessible alternatives and required competent approval.
Evidence use: Attach the completed checklist to the portfolio drawing and record unresolved contradictions or approvals as release blockers.
Open connected lessonworked workbook
Measurement, graphs and uncertainty workbook
Original problems covering SI conversion, significant figures, repeated readings, graph gradients and areas, uncertainty ranges and dimensional checks.
Evidence use: Keep raw data, first calculations, corrections, reviewer feedback and a final interpretation that distinguishes measurement evidence from assumptions.
Open connected lessoncase study
Forces, moments and load-path case study
A desk-based beam and lifting-system case connecting free-body diagrams, resultant force, moments, work, power, efficiency and design limits.
Evidence use: Submit labelled diagrams and a conditional recommendation; the resource does not provide structural approval or permission for load testing.
Open connected lessonpractical protocol
Low-voltage electricity calculation protocol
A supervised planning template for V = IR, power, energy, meter selection, isolation, component ratings, heating checks and stop criteria.
Evidence use: Complete the calculation and control sections before review by a competent supervisor; do not energise equipment from this resource alone.
Open connected lessonevidence checklist
Physics evidence and safety checklist
Checks units, diagrams, system boundaries, graph interpretation, uncertainty, instrument limits, hazards, assumptions and required professional approval.
Evidence use: Attach the reviewed checklist to the portfolio artefact and record unresolved uncertainty or safety issues as limitations.
Open connected lessonworked workbook
Chemical quantities and stoichiometry workbook
Original problems covering formula mass, moles, balanced ratios, limiting reagents, concentration, dilution, purity and percentage yield with unit checks.
Evidence use: Keep first attempt, corrections, reviewer feedback and a final worked solution showing why every operation is valid.
Open connected lessonpractical protocol
Neutralisation calculation and monitoring protocol
A desk-based planning template connecting stoichiometric estimates to staged dosing, pH and temperature monitoring, stop criteria and competent supervision.
Evidence use: Submit a completed planning sheet and risk-control table; it does not authorise an unsupervised practical activity.
Open connected lessoncase study
Corrosion and materials decision case
Compare barrier coatings, sacrificial protection and material selection using electrochemical reasoning, lifecycle cost and environmental constraints.
Evidence use: Produce a conditional recommendation that cites observations, half-equations, assumptions and maintenance implications.
Open connected lessonevidence checklist
Chemical evidence and safety checklist
Checks equation balance, units, significant figures, source provenance, uncertainty, hazards, exposure controls, waste and required professional approval.
Evidence use: Attach the signed-off checklist to the portfolio artefact and record any unresolved item as a limitation rather than hiding it.
Open connected lessonconcept guide
Applied mathematics concept and method guide
A six-unit DASKEREL guide covering definitions, quantities, units, models, mechanisms and the conditions under which each relationship remains valid, progressive practice and retrieval prompts for applied mathematics.
Evidence use: Annotate the guide, complete the misconception checks and connect each claim to a worked step, cited source or explicitly labelled assumption.
Open connected lessonworked workbook
Applied mathematics worked-practice workbook
Progresses from supported examples to unfamiliar applied mathematics applications, with space for first attempts, corrections, independent checks and spaced review.
Evidence use: Retain the first attempt, feedback, corrected response and error classification so the portfolio demonstrates learning rather than only a polished answer.
Open connected lessoncase study
Applied mathematics applied decision case
A realistic controlled case requiring select a model, state assumptions, show each calculation or causal step, check units and test the result against an independent method, comparison of alternatives and a conclusion limited by the available evidence.
Evidence use: Submit a source register, visible reasoning, sensitivity or counterargument check, conditional recommendation and the evidence that could overturn it.
Open connected lessonevidence checklist
Applied mathematics mastery and evidence checklist
Checks accuracy, dimensional consistency, uncertainty, repeatability, safety and a conclusion that does not exceed the evidence, authorship, accessibility, source control, feedback, revision history and progression readiness.
Evidence use: Use before portfolio release and record every unresolved item. Real experiments, clinical decisions, construction, energised systems, machinery and environmental interventions require competent supervision and local authority.
Open connected lessonconcept guide
Applied physics concept and method guide
A six-unit DASKEREL guide covering definitions, quantities, units, models, mechanisms and the conditions under which each relationship remains valid, progressive practice and retrieval prompts for applied physics.
Evidence use: Annotate the guide, complete the misconception checks and connect each claim to a worked step, cited source or explicitly labelled assumption.
Open connected lessonconcept guide
Applied chemistry concept and method guide
A six-unit DASKEREL guide covering definitions, quantities, units, models, mechanisms and the conditions under which each relationship remains valid, progressive practice and retrieval prompts for applied chemistry.
Evidence use: Annotate the guide, complete the misconception checks and connect each claim to a worked step, cited source or explicitly labelled assumption.
Open connected lessonconcept guide
Technical drawing and CAD concept and method guide
A six-unit DASKEREL guide covering definitions, quantities, units, models, mechanisms and the conditions under which each relationship remains valid, progressive practice and retrieval prompts for technical drawing and cad.
Evidence use: Annotate the guide, complete the misconception checks and connect each claim to a worked step, cited source or explicitly labelled assumption.
Open connected lessoncase study
Technical drawing and CAD applied decision case
A realistic controlled case requiring select a model, state assumptions, show each calculation or causal step, check units and test the result against an independent method, comparison of alternatives and a conclusion limited by the available evidence.
Evidence use: Submit a source register, visible reasoning, sensitivity or counterargument check, conditional recommendation and the evidence that could overturn it.
Open connected lessonconcept guide
Electrical and electronic systems concept and method guide
A six-unit DASKEREL guide covering definitions, quantities, units, models, mechanisms and the conditions under which each relationship remains valid, progressive practice and retrieval prompts for electrical and electronic systems.
Evidence use: Annotate the guide, complete the misconception checks and connect each claim to a worked step, cited source or explicitly labelled assumption.
Open connected lessonconcept guide
Mechanical systems and maintenance concept and method guide
A six-unit DASKEREL guide covering definitions, quantities, units, models, mechanisms and the conditions under which each relationship remains valid, progressive practice and retrieval prompts for mechanical systems and maintenance.
Evidence use: Annotate the guide, complete the misconception checks and connect each claim to a worked step, cited source or explicitly labelled assumption.
Open connected lessonconcept guide
Construction and civil technology concept and method guide
A six-unit DASKEREL guide covering definitions, quantities, units, models, mechanisms and the conditions under which each relationship remains valid, progressive practice and retrieval prompts for construction and civil technology.
Evidence use: Annotate the guide, complete the misconception checks and connect each claim to a worked step, cited source or explicitly labelled assumption.
Open connected lessonconcept guide
Computing and networking concept and method guide
A six-unit DASKEREL guide covering system components, data flows, algorithms, representations, failure modes, security controls and accessibility requirements, progressive practice and retrieval prompts for computing and networking.
Evidence use: Annotate the guide, complete the misconception checks and connect each claim to a worked step, cited source or explicitly labelled assumption.
Open connected lessonconcept guide
Business administration concept and method guide
A six-unit DASKEREL guide covering institutions, stakeholders, rights, duties, controls, incentives, records, decision criteria and the difference between description and authority, progressive practice and retrieval prompts for business administration.
Evidence use: Annotate the guide, complete the misconception checks and connect each claim to a worked step, cited source or explicitly labelled assumption.
Open connected lessonconcept guide
Accounting and finance concept and method guide
A six-unit DASKEREL guide covering institutions, stakeholders, rights, duties, controls, incentives, records, decision criteria and the difference between description and authority, progressive practice and retrieval prompts for accounting and finance.
Evidence use: Annotate the guide, complete the misconception checks and connect each claim to a worked step, cited source or explicitly labelled assumption.
Open connected lessonconcept guide
Agriculture and environmental technology concept and method guide
A six-unit DASKEREL guide covering place, location, scale, spatial patterns, physical and human processes, environmental change and the limits of mapped or sampled evidence, progressive practice and retrieval prompts for agriculture and environmental technology.
Evidence use: Annotate the guide, complete the misconception checks and connect each claim to a worked step, cited source or explicitly labelled assumption.
Open connected lessonconcept guide
Hospitality and service operations concept and method guide
A six-unit DASKEREL guide covering institutions, stakeholders, rights, duties, controls, incentives, records, decision criteria and the difference between description and authority, progressive practice and retrieval prompts for hospitality and service operations.
Evidence use: Annotate the guide, complete the misconception checks and connect each claim to a worked step, cited source or explicitly labelled assumption.
Open connected lessonworked workbook
Hospitality and service operations worked-practice workbook
Progresses from supported examples to unfamiliar hospitality and service operations applications, with space for first attempts, corrections, independent checks and spaced review.
Evidence use: Retain the first attempt, feedback, corrected response and error classification so the portfolio demonstrates learning rather than only a polished answer.
Open connected lessoncase study
Hospitality and service operations applied decision case
A realistic controlled case requiring define the decision, establish the applicable rule or accounting basis, reconcile evidence, compare options and document approval limits, comparison of alternatives and a conclusion limited by the available evidence.
Evidence use: Submit a source register, visible reasoning, sensitivity or counterargument check, conditional recommendation and the evidence that could overturn it.
Open connected lessonevidence checklist
Hospitality and service operations mastery and evidence checklist
Checks source authority, correct classification, fairness, internal control, privacy, proportionality and transparent limitations, authorship, accessibility, source control, feedback, revision history and progression readiness.
Evidence use: Use before portfolio release and record every unresolved item. Learning activities do not constitute legal, tax, audit, investment, employment or regulatory advice and do not confer spending or approval authority.
Open connected lessonconcept guide
Health and social-care foundations concept and method guide
A six-unit DASKEREL guide covering human needs, systems, development, inclusion, ethics, safeguarding, evidence quality and the limits of causal claims, progressive practice and retrieval prompts for health and social-care foundations.
Evidence use: Annotate the guide, complete the misconception checks and connect each claim to a worked step, cited source or explicitly labelled assumption.
Open connected lessonworked workbook
Health and social-care foundations worked-practice workbook
Progresses from supported examples to unfamiliar health and social-care foundations applications, with space for first attempts, corrections, independent checks and spaced review.
Evidence use: Retain the first attempt, feedback, corrected response and error classification so the portfolio demonstrates learning rather than only a polished answer.
Open connected lessoncase study
Health and social-care foundations applied decision case
A realistic controlled case requiring frame an answerable question, compare appropriate evidence, consider lived experience and distributional effects, and design a proportionate response, comparison of alternatives and a conclusion limited by the available evidence.
Evidence use: Submit a source register, visible reasoning, sensitivity or counterargument check, conditional recommendation and the evidence that could overturn it.
Open connected lessonevidence checklist
Health and social-care foundations mastery and evidence checklist
Checks validity, inclusion, consent, safeguarding, accessibility, cultural humility and avoidance of unsupported diagnosis or causal certainty, authorship, accessibility, source control, feedback, revision history and progression readiness.
Evidence use: Use before portfolio release and record every unresolved item. DASKEREL learning never replaces a qualified teacher, clinician, social-care professional, safeguarding lead or competent local service.
Open connected lessonconcept guide
Safety, quality and project practice concept and method guide
A six-unit DASKEREL guide covering problem framing, prior work, methods, ethics, creative or analytical choices, evaluation criteria and reflective practice, progressive practice and retrieval prompts for safety, quality and project practice.
Evidence use: Annotate the guide, complete the misconception checks and connect each claim to a worked step, cited source or explicitly labelled assumption.
Open connected lessonworked workbook
Safety, quality and project practice worked-practice workbook
Progresses from supported examples to unfamiliar safety, quality and project practice applications, with space for first attempts, corrections, independent checks and spaced review.
Evidence use: Retain the first attempt, feedback, corrected response and error classification so the portfolio demonstrates learning rather than only a polished answer.
Open connected lessoncase study
Safety, quality and project practice applied decision case
A realistic controlled case requiring define a question or brief, review prior work, justify a method, develop iteratively, evaluate against criteria and defend revisions, comparison of alternatives and a conclusion limited by the available evidence.
Evidence use: Submit a source register, visible reasoning, sensitivity or counterargument check, conditional recommendation and the evidence that could overturn it.
Open connected lessonevidence checklist
Safety, quality and project practice mastery and evidence checklist
Checks originality, methodological fit, attribution, ethical practice, accessibility, evaluation and an honest account of limitations, authorship, accessibility, source control, feedback, revision history and progression readiness.
Evidence use: Use before portfolio release and record every unresolved item. Projects must respect intellectual property, research ethics, safeguarding, site safety and any professional approval required for real-world use.
Open connected lesson14 subjects · 67 connected resources · planned languages: Dzongkha · English