Rahmasiwi, D. S. .; Maharani, S.; Hartini, S. . The Increasing of Mathematics Achievement in Cube and Cuboids Nets Using Problem Based Learning Models in Grade 4. J. Math Educ. Nusant. Wahana Publ. Karya Tulis Ilm. di Bid. Pendidik. Mat. 2023, 9, 244-252.