Use the recognition quizzes
Tests of plants, animals and fungi recognitions divided into categories according to the type of organism and difficulty.
Watch and use photographs as you like
Photographs of plants, animals and fungi, and of nature in general, both for information and pleasure. Some of the photographs are available in RAW format.
For conditions of use, see the Licence.
Read the educational lessons
Chapters on mathematics, physics, chemistry, and biology. Quite clear explanation.