koja

Footage of children playing with Koja in the workshop at Högskolan för Design och Konsthantverk (HDK)

Forts, dens and bush houses have been prevalent in children’s experience for many generations.
Found and built spaces are a nearly universal component of children’s landscape experience.

– David Sobel. Children’s Special Places

Koja mechanics are based on 2 physics phenomenons:

1. Local colors (actual color of an object) VS. Perceived colors (how we see the colors depending on external conditions such as colored light).

2. Objects’ color perception can be distorted by changing the color of a light source. This allows you to create optical illusions (appearance and disappearance).