Pendidikan Matematika Kemampuan Pemecahan Masalah Matematika Metode Inquiry Persegi Panjang dan Persegi Achievement Activity Analisis Kesalahan Beban Kognitif Bentuk Pangkat Dan Akar Conceptual Understanding Prosedures (CUPS) ELPSA Evaluation of Learning Mathematics Kemampuan Representasi Kesulitan Menyelesaikan Operasi Perkalian Lattice Multiplication Method Math Learning Outcomes Mathematical communication Mathematics Education Media Interaktif Model Cooperative Learning Think Pair Share (TPS) Module Development Motivasi Belajar Motivation and Learning Outcomes Multimedia Pecahan Pelatihan Pemahaman Pemahaman Konsep Prestasi Belajar Problem Solving Approach Problem posing Strategi PQ4R dengan Penilaian Portofolio Team Assisted Individualization (TAI) Trigonometri Workshop difficulty completing multiplication operations hasil belajar learning outcomes lingkaran mathematical anxiety mathematics and natural sciences teachers pembelajaran Giving Question and Getting Answer problem-based learning model scaffolding approach scientific articles