Students examine pyramids and its history, explore elements, surface and volume,  made and decorate pyramids. project takes time about one month.

Calculation of triangle area. Formulas of triangle area. the plan of lesson included explanation and testing of knowledge.

Logical attractive tasks for pupils age 10-15. This puzzle is devoted for children, a lot of adults are not able to solve their. The aim of the puzzle is to find hints in the picture and answer the following questions using your logic and knowledge.

Proportional triangles and regular octagonal area. Students have to measure real buildings and distances, use formula of the area of triangle, tg definition, and approximate calculation.

There are various tasks for gifted students. 

during the trip students calculated the height of the mountain using Pythagoras t and function of sin.