Ako zefektívniť apercepčný proces v deskriptívnej geometrii na vysokej škole
Bertrand's paradox is a longstanding problem within the classical interpretation of probability theory. The solutions 1/2, 1/3, and 1/4 were proposed using three different approaches to model the problem. In this article, an extended problem, of which Bertrand's paradox is a special case, is proposed and solved. For the special case, it is shown that the corresponding solution is 1/3. Moreover, the reasons of inconsistency are discussed and a proper modeling approach is determined by careful examination...
Následující příspěvek si klade za cíl rozšířit článek "Pozoruhodné vlastnosti kruhové inverze" a doplnit některé další zajímavé vlastnosti tohoto zobrazení a souvislosti se školskou geometrií.
The author presents a solution to a geometric problem concerning two squares inscribed into an equilateral triangle. It deals with finding such a position of the two squares for which the sum of areas is the smallest.
Using examples from elementary mathematics, the article presents some possibilities of using GeoGebra as a tool of active discovery of the mathematical basis of problems. The solving procedures are described by individual steps so that the reader can try them him/herself. The problems were chosen so that different solving strategies can be used in GeoGebra: analytic, synthetic, algebraic.
The author presents a proof that when given triangle , point is a foot of a perpendicular from on , and is the middle of , then if angle equals angle , then angle is a right one.
The article deals with some possibilities of how to teach mathematics through practical activities. The matematics in this conception is not a theoretical field. It is the area of the creation of mathematics by students themselves. Some examples are given.