APPLICATION OF THE FROBISHERS' TECHNIQUE FOR CREATING THE OPEN TASKS

摘要

Learning during mathematics lessons takes place largely thanks to the tasks learners have to solve. Some challenging tasks can be found in different textbooks, workbook or on the Internet pages, but they can also be created by the teachers themselves. The article shows different ways how to open a closed task, so it would have more solutions. Following the systematic way of modifying the tasks, students at the University propose some open tasks from the field Fractions.