Assessing children's learning in programming learning is important because the skills that children gain through programming learning are unknown. Additionally, the obtained learning effects should be analyzed and visualized. Herein we design and evaluate a programming learning course for elementary school students that uses Python and Raspberry Pi as a case study to investigate whether the learning effect in programming learning can be evaluated. The learning effect for 19 elementary school students in Japan participating in the course is evaluated using a rubric. The course improved the children's problem-solving ability, demonstrating that the learning effect in programming learning can be evaluated. As the results should be useful for future course design, this study is reported as a case study.