Frog development - specimens sunk in the material

MACHINE TRANSLATION (not authorised yet)

The transparent plastic block is sunk in approx. 20 natural specimens representing the developmental stages of a frog from egg to tadpole to frog form. The educational aid allows nature and biology lessons in schools to trace the entire developmental cycle of the frog as an example of a popular amphibian. The dimensions of the teaching aid: 14 x 6 x 1.6 cm.

The specimens sunk in the transparent block are: eggs * tadpoles at different stages of development: after lowering the egg casing, with outer gills, with inner gills, with hind legs, with hind and front legs, with shortened tail * frog /shore/.