science

Instructional television

Instructional television is a science topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Instructional television rather than just read about it. In short: Instructional television (ITV) is the use of television programs for distance education. Educational television programs on instructional television may be less than one half hour long (generally 15 minutes in length) to help their integration into the classroom setting.

Key takeaways

Instructional television belongs to science; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Instructional television to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Instructional television from memory before moving on to harder problems.

Reference excerpt

Instructional television (ITV) is the use of television programs for distance education. Educational television programs on instructional television may be less than one half hour long (generally 15 minutes in length) to help their integration into the classroom setting. These shows are often accompanied by teachers' guides that include material to help use this program in lessons. Instructional television programs in the United States have historically been shown during the daytime on Public Broadcasting Service (PBS) stations. However, in the 21st century fewer public television stations devote their airtime to ITV than in the past, ITV programs are either seen on a digital subchannel of non-commercial educational public television station, or on a local educational-access television channel run by a public, educational, and government access (PEG) cable TV organization. Instructional television in the United States has been granted 20 microwave channels, administered by local educational institutions, through a service known as ITFS, or Instructional Television Fixed Service. Instructional television may also be programmed on terrestrial television stations.

See also Agency for Instructional Technology -- ITV program distributor Annenberg Foundation (Annenberg Channel) Washington County Closed-Circuit Educational Television Project William M. Brish, a leader of closed circuit instructional television in public school elementary classrooms. Educational films Educational television

External links National Educational Broadband Services (EBS) Organization (formerly the National ITFS Association) Edwin G. Cohen had a distinguished career in educational and instructional television from 1955 to 1990. His positions included program associate for the Educational Television and Radio Center, director of the National Instructional Television Film Library, and executive director of the Agency for Instructional Television and its successor, Agency for Instructional Technology. His papers are housed at the University of Maryland Libraries

Worked examples

Example 1 — a first encounter with Instructional television

Start with the simplest possible case. Write down what Instructional television claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Instructional television before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Instructional television ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Instructional television

In research: Instructional television appears in science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Instructional television in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Instructional television is common in secondary-school and first-year university syllabi. It links to neighbouring topics Education stubs, Public television in the United States, Television stubs, so understanding it makes those chapters shorter.
In everyday life: Look for Instructional television outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study Instructional television in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Instructional television means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Instructional television out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Instructional television in simple terms?

Why does Instructional television matter?

Because it connects several science ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Instructional television?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Instructional television.