NPR – Maanvi Singh
“These days, you’re most likely to find the simple abacus in the hands of preschoolers — with rows of rainbow-colored beads that kids can push around and shake and rattle.” (more)
NPR – Maanvi Singh
“These days, you’re most likely to find the simple abacus in the hands of preschoolers — with rows of rainbow-colored beads that kids can push around and shake and rattle.” (more)