5  Teaching Support Systems

A teaching support system is everything that helps the teacher communicate content to the learner — physical (chalk, model), audiovisual (projector, video) or digital (LMS, virtual lab). The official syllabus organises support systems into three categories.

TipThree Categories of Teaching Support System
  1. Traditional — chalkboard, textbook, charts, models, real objects.
  2. Modern — overhead projector (OHP), slide projector, audio system, film, television, language laboratory.
  3. ICT-based — computer, internet, smart board, learning management system (LMS), MOOC, virtual lab, mobile learning.

5.1 Edgar Dale’s Cone of Experience

Edgar Dale arranged learning experiences from concrete (most direct) to abstract (most symbolic) in his Cone of Experience (1946) (Edgar Dale, 1946). The more concrete the experience, the more channels of perception are engaged — but the harder it is to scale. Every level has its place; the senior teacher chooses the level that matches the objective.

TipDale’s Cone of Experience — Bottom-up
Level (concrete → abstract) Type of experience Example
1. Direct purposeful experience First-hand doing Conducting a chemistry experiment
2. Contrived experience Models and mock-ups Working with a model of the heart
3. Dramatised experience Role-play, simulation Mock parliament
4. Demonstration Teacher performs a procedure Lab demonstration
5. Field trip / study visit First-hand observation in context Visit to a factory
6. Exhibits Curated collection Museum, science exhibition
7. Television / motion picture Recorded audiovisual Documentary
8. Still pictures, recordings, radio Recorded single-channel Photograph, podcast
9. Visual symbols Charts, diagrams, graphs Periodic table
10. Verbal symbols Spoken or written word Lecture, textbook 

flowchart BT
  D[Direct purposeful experience] --> C[Contrived · Dramatised · Demonstration]
  C --> F[Field trip · Exhibits · Television]
  F --> S[Still pictures · Recordings · Radio]
  S --> V[Visual symbols · Verbal symbols]
    classDef default fill:#003366,color:#ffffff,stroke:#ffcc00,stroke-width:3px,rx:10px,ry:10px;

NoteDistractor warning — the Dale percentages

The percentages “people remember 10 % of what they read, 20 % of what they hear, 30 % of what they see…” are sometimes attributed to Dale’s cone. They were added by later popularisers and have no empirical basis in Dale’s original work. NTA distractors offer these percentages — the candidate should reject them.

5.2 Traditional Support Systems

Traditional aids have been in classrooms for over a century — and still work where electricity, connectivity or maintenance budgets fail. Traditional does not mean obsolete.

TipTraditional Teaching Support Systems
Aid What it does Best used for
Chalkboard / blackboard Real-time visual display Concept building, problem-solving step by step
Whiteboard Same as chalkboard, with markers Same plus colour-coding
Textbook Curated content in print Sustained reading, reference
Reference book / journal Authoritative depth Postgraduate work, research aptitude
Charts and posters Static visual reference Taxonomies, processes, key facts
Models (working / static) 3-D representation Anatomy, mechanisms, structure
Real objects (specimens) The thing itself Biology, geology, art
Maps and globes Spatial reference Geography, history
Bulletin / display board Curated student work, notices Class community, ongoing project display

The chalkboard deserves special note. Its in-class function is to support the teacher’s spoken narrative in real time — the marks the teacher makes appear simultaneously with the explanation. No other medium does that.

5.3 Modern Support Systems

Modern aids are the audiovisual artefacts that entered classrooms during the twentieth century. Modern is a technology-of-its-time label; what counted as modern in 1985 (the OHP) is now historical.

TipModern Teaching Support Systems
Aid What it does Best used for
Overhead Projector (OHP) Projects acetate transparencies Predesigned diagrams, layered overlays
Slide projector / 35 mm Projects photographic slides Art, geography, biology
Episcope / opaque projector Projects opaque page or photo Image enlargement without prep
Film projector / motion picture Plays educational film Process, narrative, geographical content
Television (closed-circuit, broadcast) Curriculum-based programmes Wide reach, expert content
Audio system / tape recorder Plays recorded audio Language pronunciation, music, oral history
Language laboratory Audio-active comparative drills Pronunciation, listening comprehension
Radio / educational radio Broadcast audio Reach in low-resource areas
NoteOHP vs LCD projector

The OHP uses a transparent acetate sheet placed on a glass platen, lit from below — it is a modern aid. The LCD projector uses digital input from a computer — it is properly classified as ICT-based. NTA distractors swap these.

5.4 ICT-Based Support Systems

The ICT-based category is the centre of gravity for current NTA Paper-I questions, especially after the post-COVID transition to online and blended teaching.

TipICT-Based Teaching Support Systems
Artefact What it does Where it appears
Computer / laptop / tablet Personal computing for teacher and learner Classroom, lab, home
Smart board / interactive whiteboard Touch-sensitive display with software Smart classrooms
LCD / DLP projector Digital projection from computer Lecture hall, smart classroom
Document camera (visualiser) Camera that projects documents and objects Replaces OHP and episcope
Learning Management System (LMS) Course delivery, assignment, grading Moodle, Google Classroom, Canvas
MOOC platforms Massive open online courses SWAYAM, NPTEL, Coursera, edX
Virtual laboratory Browser-based simulation of physical lab Government of India Virtual Labs
Educational TV (DTH) 32+ channels, free-to-air SWAYAM PRABHA
Digital library E-books, e-journals, theses NDLI, e-ShodhSindhu, e-PG Pathshala
Mobile learning (m-learning) Smartphone-delivered content DIKSHA app, SWAYAM app
Web-conferencing tools Real-time online classes Zoom, Google Meet, Microsoft Teams
Open Educational Resources (OER) Free, openly-licensed material NROER, OER Commons, MIT OCW 

flowchart TB
  T[Teaching Support<br/>Systems] --> TR[Traditional<br/>Chalk · Text · Charts · Models]
  T --> M[Modern<br/>OHP · Slide · Film · TV · Lang Lab]
  T --> I[ICT-Based<br/>Computer · LMS · MOOC · Smart board · Virtual Lab]
  I --> G1[Government<br/>SWAYAM · NPTEL · NDLI · DIKSHA · Virtual Labs]
  I --> G2[Generic<br/>LMS · Web-conf · OER · m-learning]
    classDef default fill:#003366,color:#ffffff,stroke:#ffcc00,stroke-width:3px,rx:10px,ry:10px;

5.4.1 Governance Bodies Behind India’s ICT-in-Education Infrastructure

TipWhich body runs which platform
Body Platforms
Ministry of Education (MoE) SWAYAM, SWAYAM PRABHA, NDLI
UGC / INFLIBNET Centre e-PG Pathshala, e-ShodhSindhu, Shodhganga
NCERT DIKSHA, NROER (National Repository of OER)
AICTE NEAT (National Educational Alliance for Technology)

5.5 Choosing the Right Support System

TipThree Questions to Choose a Support System
Question Implication
Where on Dale’s cone does the objective sit? Concrete experience for skill; verbal symbols for theory
Is the medium accessible to every learner? RPwD-2016 and inclusive design considerations
Does the medium fail gracefully if power, connectivity or hardware fails? Always have a chalkboard fallback

A class plan that depends entirely on a working LCD projector and uninterrupted Wi-Fi is one outage away from collapse; a class plan that uses the projector for what only the projector can do — and the chalkboard for the rest — is robust to outage.

5.6 NEP-2020 and the Digital Push

NEP-2020 calls for a National Educational Technology Forum (NETF), the strengthening of SWAYAM, SWAYAM PRABHA and DIKSHA, the creation of digital infrastructure for higher education, and the integration of technology into pedagogy at every level (Ministry of Education, Government of India, 2020).

5.7 Practice Questions

Q 01 Dale's Cone Easy

The Cone of Experience was developed by:

  • AEdgar Dale
  • BBenjamin Bloom
  • CRobert Glaser
  • DHoward Gardner
View solution
Correct Option: A
Edgar Dale introduced the Cone of Experience in Audio-Visual Methods in Teaching (1946).
Q 02 Traditional Aids Easy

Which of the following is not a traditional teaching aid?

  • AChalkboard
  • BWall chart
  • CWorking model
  • DSmart board
View solution
Correct Option: D
The smart board is an ICT-based aid, not a traditional one.
Q 03 OHP Mechanism Medium

The OHP (Overhead Projector) projects images using:

  • AA digital input from a computer
  • BA transparent acetate sheet placed on a glass platen
  • CAn opaque page placed face down
  • DA laser scanning system
View solution
Correct Option: B
The OHP uses a transparent acetate sheet placed on a glass platen, lit from below — a modern aid (not ICT-based).
Q 04 Governance Bodies Hard

Match the platform with the body that runs it:

(i) SWAYAM (a) NCERT
(ii) DIKSHA (b) UGC / INFLIBNET
(iii) e-PG Pathshala (c) Ministry of Education
(iv) NEAT (d) AICTE
  • A(i)-(c), (ii)-(a), (iii)-(b), (iv)-(d)
  • B(i)-(a), (ii)-(c), (iii)-(d), (iv)-(b)
  • C(i)-(b), (ii)-(d), (iii)-(a), (iv)-(c)
  • D(i)-(d), (ii)-(b), (iii)-(c), (iv)-(a)
View solution
Correct Option: A
SWAYAM → MoE; DIKSHA → NCERT; e-PG Pathshala → UGC/INFLIBNET; NEAT → AICTE.
Q 05 Dale's Cone Medium

Dale's Cone of Experience runs from:

  • AVerbal symbols (base) to direct experience (apex)
  • BDirect experience (base) to verbal symbols (apex)
  • CModern aids (base) to traditional aids (apex)
  • DICT (base) to print (apex)
View solution
Correct Option: B
Concrete at the base (direct experience), abstract at the apex (verbal symbols).
Q 06 ICT Examples Medium

Which of the following is the most appropriate example of an ICT-based teaching support system for a postgraduate research-methodology course?

  • AA printed reference book
  • BAn LMS-hosted course module with embedded video lectures, datasets and discussion forums
  • CA wall chart of statistical formulas
  • DA film strip on research design
View solution
Correct Option: B
The LMS-hosted module integrates content, interaction and assessment — the defining capability of an ICT-based system.
Q 07 Dale Distractor Hard

The percentages "people remember 10 % of what they read, 20 % of what they hear …" sometimes attributed to Dale's cone are:

  • APart of Dale's original publication
  • BAdded by later popularisers and have no empirical basis in Dale's work
  • CValidated by Bloom in 1956
  • DValidated by NCERT in 2020
View solution
Correct Option: B
The percentages were added by later popularisers and have no empirical basis in Dale's original work — a frequent NTA distractor.
Q 08 SWAYAM PRABHA Easy

SWAYAM PRABHA is best characterised as which type of support system?

  • ATraditional
  • BModern
  • CICT-based
  • DNone of the above
View solution
Correct Option: C
SWAYAM PRABHA's 32+ DTH channels are an ICT-based system delivered over digital television infrastructure.
ImportantQuick recall
  • Three categories: Traditional · Modern · ICT-based.
  • Dale’s Cone runs concrete (direct experience) → abstract (verbal symbols), base to apex.
  • The Dale percentages are not Dale’s — distractor warning.
  • OHP = transparent acetate (modern); LCD projector = digital input (ICT-based).
  • Government of India platforms: SWAYAM (MoE), SWAYAM PRABHA (MoE), DIKSHA (NCERT), e-PG Pathshala (UGC/INFLIBNET), NEAT (AICTE), NDLI (MoE), Virtual Labs (MoE).
  • NEP-2020: National Educational Technology Forum + integrate ICT at every level.