Nature that surround us can be our best and closest teacher. Theoretical backgrounds of experiential learning are one of the main parts of the thesis, because learning in that way helps an individual person to remember more and that kind of knowledge lasts longer. Every teacher has a chance to make classes more interesting by using live organisms in the classroom. Easily accessible organisms to us are autochthonous organisms, because we don't need any permisions for their use in educational purposes – if we use them properly. Live organisms are not enough, we also need a very good teacher/teaching preparation and properly formatted worksheets which will guide pupils to desired skills regarding the use of indigenous organisms. This was the reason we, mostly for teachers of natural sciences and biology, examined all necessary laws regarding the use of live organisms in classrooms, described individual organisms and presented appropriate methods of growing and taking care of it at schools. We also draft vertical connections between particular learning contents and prepared some examples of teaching preparations, instructions and worksheets for different organisms. After reviewing scientific literature and some other teaching aids (textbooks, workbooks and manuals) we found out the content is mostly about Invertrebate groups: insects, crabs, unicellular organisms etc. In a group of vertebrate animals common toad and fire salamander appeared the most. A lot of monographic publications still doesn't encourage enough the use of methods with autochthonous organisms in classrooms and/or direct contact with this kind of organisms, because lessons are still based on theoretical knowledge instead of practical. Law, prescribing standards of living and taking care of animals/organisms in captivity, including schools, is way too extensive and not specific enough (this specially goes for invertrebate groups). We can conclude that with the right use of practical cases and experiments teacher can help their students to make natural sciences and biology more interesting.
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