What is interactive art? Start with a meaningful response
Understand interactive art through the relationship between a participant's action and an artwork's response, then prototype a small piece whose behavior changes how it is experienced.

An action becomes part of the work
Interactive art gives a participant's action a role in the work's unfolding. The action might be a touch, a choice, a movement, or a contribution. A button alone does not establish the artistic relationship; what matters is how the response changes the participant's experience of the piece.
Describe the action, input, and response
Describe the work in three parts: what the participant can do, what the piece senses or receives, and what changes afterward. Build those relationships with paper first. One person can operate the hidden response while another explores the proposed action.
Make response strength explicit in the working notes before building the full piece. Begin with the smallest version that demonstrates the proposed relationship. Remove secondary decoration while checking its construction. A tiny proof makes incorrect assumptions visible before they multiply across the finished work. A useful acceptance check is whether the participant can connect the gesture with an expressive consequence. Judge that at the intended viewing size or working distance, where tiny construction mistakes and exaggerated effects can have very different consequences.
Make the consequence discoverable
If a participant cannot connect an action with its consequence, the response may be too delayed, too subtle, or unrelated to the gesture. If the response is completely predictable, consider whether the interest lies in precision, surprise, accumulation, or another intentional quality.
When the result becomes confusing, return response strength to its recorded starting point. Try an ordinary action, an incomplete action, and two actions in quick succession. Watch whether the piece acknowledges each input and returns to a usable state afterward.
Compare direct and fragmentary reveals
Make a picture that becomes more visible whenever someone moves a paper shutter. Compare a direct one-to-one reveal with a version where each action uncovers a different fragment. Ask what each version invites the participant to do next.
Make three comparison versions using a barely visible change, a clear change, and a complete transformation. Choose one visible feature to compare before starting. Inspect it across the entire set rather than letting the most dramatic result dictate the criterion afterward. Keep both a preferred version and a useful failed version, with a short note describing the difference between their behavior.
Distinguish operating from participating
In the night garden, test whether moving the moon merely turns an effect on or lets the participant make a meaningful arrangement. Give the moon two or three positions that produce distinct relationships among the flowers. The work need not offer unlimited freedom. A small choice can matter when its consequences change what is visible, what becomes connected, or how the scene's implied story is understood.
A night garden with a movable moon
Create a small night garden in which placing a paper moon changes which flowers are visible. The moon can cover or uncover contrasting layers. The participant's choice alters the scene's reading, making the action part of the artwork rather than an attached control panel.
References & further reading
Examples and exercises in this guide are original teaching scenarios.