Abstrak
<p>This study was aimed to describe the practicality of the workbook based on constructivism in FKIP UMMY Solok. The practicality of the workbook was reviewed from student response questionnaire, observation SAP implementation, and interviews with students. The result of practical workbook is very practical with an average of 92%. The use of workbook to help lecturers and students in achieving learning objectives. Conclusion of this study has produced a practical numerical method based on constructivism workbook.</p>