IMPROVING THE COMPETENCE IN USING MATHEMATICAL AIDS AND TOOLS WITH THE SUPPORT OF GEOGEBRA SOFTWARE IN TEACHING TO CALCULATE THE ANGLE BETWEEN TWO LINES IN SPACE

Teaching using mathematical aids and tools is one of the five teaching methods to develop important mathematical competencies for students. Among the mathematical aids and tools, GeoGebra software is one of the main tools that are taught to students right from the 6th grade. GeoGebra software in general and GeoGebra 3D software in particular have many command buttons and features meeting users’ needs and expectations. Especially in teaching and developing the competency to use mathematical aids and tools, the content of calculating the angle between two lines in space, the GeoGebra software has more advantages than the traditional teaching method with chalkboards. Using the GeoGebra software in teaching and developing the competency to use mathematical aids and tools helps students have an intuitive and vibrant view. Students can change the position of the drawing, rotate the figures, predict the result, verify, and trace, etc. Students are passionate and interested in knowledge, especially the knowledge of spatial geometry. Students understand and remember more deeply what they have learned. In this article, the authors provide a method as well as a teaching process to improve students’ competency in using mathematical aids and tools with the help of GeoGebra software on the content of calculating the angle between two lines in space.