Validity and Practicality Of student Activity Sheets (LAM) Of Real Number Sequences With The Aid Of Geogebra Based On The APOS Model
H Hanifah and Istikomar

Program Studi Pascasarjana Pendidikan Matematika Universitas Bengkulu, Jl. WR Supratman, Kota Bengkulu 38122, Indonesia

Abstract

This study aims to determine the validity and practicality of student activity sheets (LAM) assisted by geogebra based on the APOS model. The research was carried out at the program studi pascasarjana pendidikan matematika Universitas Bengkulu. This type of research is development research that uses the Plomp model. The data obtained from the results of the validation of the experts, the practicality of the individual test, the small group test and the large group test using the validity and practicality test sheet instrument in the form of a five-scale questionnaire. The average score obtained from expert validation is 0.95 based on the Aiken index, including the valid category. In the analysis of practicality, obtained by individual practitioners 4.8- small group practitioners 4.5 and large group practitioners 4.6. The average value obtained is more than 4.2, which means that the student activity sheet has a very practical category to be used in supporting the teaching and learning process.

Keywords: Validity, Practicality, Geogebra, APOS Model, Student Activity Sheet (LAM)

Topic: Mathematics Education