SOLUTIONS TO HELP STUDENTS CORRECT MISCONCEPTIONS WHEN LEARNING THE MONOTONICITY OF THE FUNCTION

To investigate students' misconceptions about false assumptions, the authors conducted a survey of 362 students in grade 12 in Nga Bay town, Phung Hiep District, Hau Giang province. The survey showed that the problem of realizing students’ errors in relation to the monotonicity of the function is rooted from many factors. As a result, the remedies are given, including: 1/ Help students master the nature, meaning of concepts, theoretic, attention to symbols, Mathematical terms; 2/ Combine teaching new knowledge and consolidate old relevant knowledge, systematize knowledge; 3/ Design teaching activities in accordance with students awareness to promote active students; 4/ Organize students to explore mathematical algorithms; 5/ In the course of instruction, put the wrong solution to the student to identify the mistake.