The living beings – third grade

 Classification of animals: vertebrates and invertebrates

 Invertebrate animals: the authropods

 Other invertebrate animals

 Vertebrate animals: mammals

 Vertebrate animals: birds

 Vertebrate animals: reptiles

 Vertebrate animals: fish

 Vertebrate animals: the amphibians

 Vital parts and functions of plants

 Classification of plants

 Photosynthesis in plants