LI, Li; TANG, Haiming. The Dynamic Mathematics Software for Teaching Variance. Edumatika : Jurnal Riset Pendidikan Matematika, [S.l.], v. 3, n. 2, p. 136-146, nov. 2020. ISSN 2620-8911. Available at: <http://ejournal.iainkerinci.ac.id/index.php/edumatika/article/view/629>. Date accessed: 11 apr. 2021. doi: https://doi.org/10.32939/ejrpm.v3i2.629.