Cici Winarti and Septrikus Norhayani 2021. EFEKTIVITAS TERHADAP KEMAMPUAN KOMUNIKASI MATEMATIS MELALUI PEMBELAJARAN DARING MENGGUNAKAN MEDIA WHATSAPP GROUP. Journal of Innovation Research and Knowledge. 1, 5 (Oct. 2021), 699–704. DOI:https://doi.org/10.53625/jirk.v1i5.462.