فاعلية وحدة مطورة في الرياضيات قائمة علي مدخل STEM و معايير الممارسة الرياضية CCSSM لتحسين قدرة تلاميذ المرحلة الإعدادية على حل المشكلات الرياضية الحياتية

الملخص EN

The current research aimed to identify the effectiveness of an improved unit in mathematics based on STEM entrance and CCSSM mathematical practice standards to improve the ability of middle school students to solve life problems.

The researcher prepared the developed unit and the teacher's guide to teach the unit.

Research tools were prepared and modified, which included testing the skills of solving mathematical reallife problems.

The developed unit was applied to a sample of (60) middle school pupils in the second semester of the 2018/2019 academic year.

The experimental methodology was used and by using the quasi-experimental design, the design of the two groups of experimental and control with two pre- and post-measurements was used.

The research found that there are statistically significant differences at the level of (0.01) between the scores mean of the experimental and control groups in the post application of the test of solving real-life mathematical problems as a whole and its sub-skills benefit in favour of the experimental group.

In light of the results, it was recommended to organize training programs for mathematics teachers in all academic and pre-service stages towards the STEM approach and the CCSSM mathematical practice standards in teaching mathematics.