Pengembangan Perangkat Pembelajaran Matematika Berbasis Discovery Learning Pa…

This research to produce a product in the form mathematical learning devices using based on discovery learning on valid and practical relation and function material. The development model used is a 4-D model, namely define, design, develop, and desseminate. The research instrument used is the instrument of validity and practicality. The instrument of validity is in the form of a validation asse…