This magical activity is based on a photographic process: cyanotype. The child creates scenes on photosensitive paper using opaque patterns. When exposed to sunlight, a negative of the patterns is produced on the paper. Then, all that’s left to do is rinse the paper in a clean water bath and watch as the creations appear on the blue background!With 4 felt-tip pens to transform 4 pictures into colourful underwater scenes. Set includes 8 sheets of photosensitive paper (21 x 28 cm), around 100 patterns printed on plastic, 1 sheet of plexiglass and 4 coloured felt-tip pens. A simplified activity with no need to mix chemicals. A unique illustrated finish with pre-printed plastic patterns. A magical, creative activity. With 4 felt-tip pens to transform 4 pictures into colourful underwater scenes.Flower and plant patterns to enhance with real picked plants. Suitable from 7 years. Warning! Not suitable for children under three years, choking hazard due to small parts.