Rozdělení čtyřúhelníku na čtyři části stejného obsahu
Různé přístupy k výuce vět o shodných trojúhelnících
The article focuses on the approaches to the teaching of the same subject matter, namely the theorems for congruent triangles. The approaches mainly differ in the pupils' participation on the creation of new knowledge and are ordered on the scale instructional teaching - constructivist teaching. Three of the approaches have been tested in real classrooms and the trials are described in the article.