Pangaribuan, Firman, Universitas HKBP Nommensen, Indonesia
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Vol 5, No 1 (2021): JUNE - Research in Mathematics Education
PENGEMBANGAN ALAT PERAGA DARI LIMBAH PLASTIK UNTUK MATERI GEOMETRI BIDANG DATAR JENJANG SEKOLAH DASAR [CREATING TEACHING AID FROM PLASTIC WASTE ON PLANE GEOMETRY IN ELEMENTARY SCHOOL]
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