Research and Development approach improved validity and practicality in high school geometry education.
Key Points
The developed worksheets achieved a very valid category with an average score of 3.61, indicating effectiveness in enhancing understanding.
In small-group trials, the worksheets were rated very practical, achieving an average score of 89.16 during evaluation.
Using the ADDIE model, the research facilitated meaningful learning through the development of tailored educational tools for students.
The findings suggest that using discovery learning worksheets could be a valuable resource for improving mathematical understanding in high school education.