CONTEXTUAL FEATURES PADA PENUGASAN BUKU TEKS MATEMATIKA MATERI KECEPATAN DAN DEBIT . jipd [Internet]. 2021 Jul. 27 [cited 2026 Jul. 20];5(2):102-9. Available from: https://jurnal.unikastpaulus.ac.id/index.php/jipd/article/view/1259