The Activity Package to Development: Mathematical Problem – Solving skill for Students of Mathematies , the Faculty of Education Uttaradit Rajabhat University.

Abstract

                 The purposes of the study were : to develop and study the results of use activity package \ on mathematical problem solving for the students of mathematicies education   .The samples of the study included 23 students in the 3^rd year, majored in early Mathematicies education, Faculty of Education, Uttaradit Rajabhat University in the 2024 academic year.Invention used were an activity package on mathematical problem solving. The instruments used were an Test for mathematical problem solving and a satisfaction questionnaire. The data were analyzed by mean, standard deviation, and percentage.  /  was used to find out the effectiveness of the activity package; t-test (Dependent Sample) was used to compare mathematical problem solving before-after activity package and  t-test (one sample group) was used to compare the level of student satisfaction with the criteria.

                 The results of the study were : the activity package consisted of five sets- set 1: Basic knowledge, set 2: Which camp is more worthwhile?, set 3: Let's organize a study tour activity, set 4: Which glass makes the most delicious coffee?, and set 5: Which pizza pan should I eat?. The effectiveness of the activity package was 83.16 / 82.60 which higher than the set criteria of 80/80. The results  of use the students’ mathematical problem solving after studying is higher than before studying significantly at 0.01 level and the students’satisfaction toward the package was at a most level; and it was significantly  at 0.01 level.