Pertiwi S, Mailizar M, Elizar E. VALIDITY OF GUIDED INQUIRY-BASED LEARNING INSTRUMENT WITH GEOGEBRA APPLETS FOR TEACHING CIRCLES. Kalamatika J. Pendid. Mat. [Internet]. 2023Apr.30 [cited 2026Apr.3];8(1):63-6. Available from: https://www.kalamatika.matematika-uhamka.com/index.php/kmk/article/view/561