The research aimed at identifying the effectiveness of the six-dimensional strategy PDEODE in developing deep understanding of Mathematics and Learning Engagement among first-year female secondary school students in Jazan region . In its procedures, the research relied on the experimental approach based on the design of the two experimental groups (N1=39) and the control group (N2=41) with pre- post-tests. The effectiveness of the experimental treatment used (PDEODE strategy) in developing the two dependent variables (deep understanding of Mathematics and Learning Engagement) among female secondary school students. The following results have been revealed: • There is a statistically significant difference at (0.05) level between the overall mean scores of the of the experimental and control groups in the post test of deep understanding of Mathematics and its subcomponents (generative thinking skills - decision-making skill - interpretation skill - questioning skill) each in favor of the experimental group. • There is a statistically significant difference at (0.05) level between the overall mean scores of the experimental and control groups in the post test of the Learning Engagement scale and its subcomponents (enjoyment of learning - participation in activities - curiosity) each in favor of the students of the experimental group. • There is a positive correlation and a statistical significance at (0.05) level between the students' scores in the post application of each of the deep understanding of mathematics test and the scale of Learning Engagement. In the light of the previous results, some recommendations and suggestions were presented, including: holding training courses for Mathematics teachers at the secondary stage to develop their abilities to use the PDEODE strategy in teaching, and conducting a study on the effectiveness of the mentioned strategy in developing other learning outcomes such as (twenty-first century skills, learning independence) among female secondary school students.
Badriah Daif Allah Yahya AlZahrani (Mon,) studied this question.