Basic operations with rational numbers and didactic mediation of the place value board in first grade students in Huánuco

Abstract

The purpose of the scientific inquiry was to verify that the didactic mediation of the place value board improved the learning of basic operations with decimal rational numbers of students of the first grade of secondary school in Huánuco; for this purpose, an explanatory research and quasi-experimental design was formulated; the accessible population was 78 students and the sampling used was non-random. with 37 in the experimental group and 41 in the control group; Three written tests were used, with the name of initial test, process test and final test, with ten questions each test and two points per question, so the vigesimal scale was used: [00 - 20]; the data processing was carried out within the framework of descriptive statistics and inferential statistics, obtaining the following result: the calculated Z value was 3.76, which was located in the rejection zone with respect to the critical Z equal to 1.96, which is a critical value for 95% of reliability and 5% of significance; in this sense, the null hypothesis was objected to and the alternative hypothesis was admitted, because there were sufficient indications that proved that the learning of basic operations with decimal rational numbers improved with the didactic mediation of the place value board in students of the first grade of secondary school in Huánuco.