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Media has a massive function in learning activities. Among others
are two-dimensional media, three-dimensional and environmental

media, and others. Because the media-media serves as an intermediary
for conveying or spreading ideas, ideas, or opinions in learning so that
what is stated reaches the intended recipient. In this paper, the author

will discuss teaching media in the form of two-dimensional media,
namely board media.

Two-dimensional media have a specific value to facilitate the
presentation of a particular set of metrics, arouse the child's interest,
and provide uniformity of information. It can be done repeatedly,

reaching all subject areas; the teacher must have skills in learning
activities, including the ability to give explanations, both primary and

additional explanations. Two-dimensional visual media is projected
electronic media and consists of hardware and software. The use of this
media requires electricity to be able to move the wearer.

This two-dimensional visual media has several kinds, including
overhead projectors, slides, and strip films. Overhead projectors can
project on the screen what is depicted or inscribed on a transparent

plastic sheet. The teacher can do writings, notes, or drawings on those
transparent sheets, just like it can be done on a whiteboard. Overhead
projectors can be used without darkening the room (Nasution 1994,

105).
From the above understanding, in general, it can be said that the

substance of the two-dimensional media itself is a form of the channel
which is used to channel messages, information, or learning materials
to the recipient of the message or learner; it can also be said that two-

dimensional learning media are various types of components in the
learning environment that can stimulate learners to learn.