Abstract:
This quasi-experimental research aimed to investigate and compare the basic mathematical skills of preschoolers before and after implementing the Learning Cycle Model 7 Steps (7E) with open-ended questions and to study the effectiveness index of the Learning Cycle Model 7 Steps (7E) with open-ended questions. The target group consisted of preschool children aged 3-4 years at Ban Huai Hin School during the first semester of the 2023 academic year, with an experimental duration of 8 weeks. The tools used in the study included (1) a lesson plan for the Learning Cycle Model 7 Steps (7E) with open-ended questions and (2) an evaluation form for the basic mathematical skills of preschoolers. The statistical methods used for data analysis included mean, standard deviation, percentage, and effectiveness index. The research findings revealed that (1) the preschoolers' basic mathematical skills before the experiment were at a level of Need for Improvement, while after the experiment, they were at a good level; (2) there was a statistically significant increase in the basic mathematical skills of preschoolers after the experiment compared to before the experiment at the .05 level, indicating that the Learning Cycle Model 7 Steps (7E) with open-ended questions effectively could promote basic mathematical skills; (3) the effectiveness index of the Learning Cycle Model 7 Steps (7E) with open-ended questions was 0.7535, indicating that the basic mathematical skills of preschoolers increased by 75.35%.