Page 3 - E-VOOCK, Naufal Siddiqi Nasrullah, 2024

PREFACE

Learning vocabulary by just memorizing words is slightly

different from learning vocabulary with instructional videos such as
TED-Talks. Instructional videos can be defined as visual tools that
demonstrate, teach, or explain a subject, process, or concept of
something to viewers (TED, 2019). Furthermore, instructional videos
are videos that are used to teach or train some purposes and
essentially focus on transferring knowledge, this includes establishing
and explaining several concepts and ideas as well as demonstrating

several processes. Therefore, TED talks can be classified as
instructional videos because they explain the concepts and subjects
presented in the form of public speaking presentations.

Moreover, EFL university students who used TED-Talks to study
English admitted that they learned how to speak in front of an
audience. They tried to imitate the speakers in TED-Talks and
practised speech to make their performances in public speaking
more interesting. This phenomenon occurred because speakers in
TED talks acted as instructors who explained concepts and ideas

using English vocabulary and sentences. In addition, instructional
videos for teaching second-language vocabulary often appear as
the instructor on the screen with movements and body gestures. This
might affect the students’ emotions, motivation, cognition, and
learning performance.

In this book, I not only used TED talk as a medium for enriching
the vocabulary of EFL undergraduate students. Moreover, I also
utilized the Language Reactor, formerly known as “Language

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