Abstract:

Effective use of different resources to support teaching is a teacher competence and most teachers are already able to use Open Educational Resources (OER), which are often defined as freely accessible materials that are used for teaching, learning and evaluation. The educational use of these resources must be made consciously and wisely. Also, mathematics teachers, if they use tasks from freely downloadable servers in their lessons, must subject these tasks to careful examination and analysis, think through them in a didactic context and verify the accuracy of their results.

There are big differences between mathematical materials within OER and most of the Czech ones are focused only on tasks requiring algorithmic thinking or practicing formulas. Concerned at the level of the English language, teachers seek inspiration, especially from home sources. The paper aims to present the results of teachers' work with selected foreign OERs. As part of the pilot survey in 2019, teachers were asked to select 10 tasks for implementation in the mathematics of primary school, to translate them and to methodically analyze and evaluate them from given sources (https://www.youcubed.org/ and https://nrich.maths.org/) about the effectiveness of teaching mathematics. Data processing was carried out qualitatively in the form of text analysis, whereby these tasks were grouped into common categories and analyzed.

Teachers usually evaluated the work with these tasks very positively, with the fact that their implementation enriched their teaching of mathematics. The paper also includes specific examples of students´ solutions.

Keywords:

Open Educational Resources, mathematical teaching, mathematics teachers, mathematics tasks.