In this thesis we discuss the prominent work Practica Geometriae of the notable medieval European mathematician Leonardo Fibonacci. At the very beginning, we give biographical information on Leonardo Fibonacci and review his influence and the importance of his works and his contributions to mathematics. In the second chapter, we discuss in detail the content of Fibonacci Practica Geometriae. This chapter contains nine subsections with the names used by Fibonacci in the Practica Geometriae, where each subsection deals with a different topic. In the Introduction Fibonacci listed 22 definitions and axioms that were very similar to those in Euclid’s Elements, and then described Pisian measurements. In the next subsection Fibonacci deals with the description of the method for calculating rectangle and square areas. Further, in the third subsection, the procedure for finding the second roots of Pisan units and basic calculations with second roots are described. The fourth subsection describes procedures for calculating the area of various forms of fields. The fifth subsection describes the division of fields that have the form of triangles, quadrangles, polygons, and circles under different conditions. The sixth subsection deals with the finding of the third roots of numbers and the basic calculations with third roots. The seventh subsection deals with the calculation of the volume of solids. The eighth subsection describes the method of measuring the height of trees and calculating the length of arcs and chords. The last subsection deals with the calculation of the length of the sides of the regular pentagons and decagons and the diameter of an inscribed and circumscribed circles. The thesis ends with a chapter in which we discuss Fibonacci’s topics and methods from Practica Geometriae from the perspective of contemporary maths teaching, focusing on the differences and similarities of Fibonacci’s and contemporary approaches.