Arithmetic education for children: When are triangles squares? ● Rabbi Yitzchak Ginsburgh

Rabbi Ginsburgh teaches a group of elementary school children in Philadelphia about the two basic figurate numbers: triangles and squares. Though here the Rav uses algebra, the same material makes up part of the Rav’s 2nd and 3rd grade curriculum in arithmetic. For more on Torah-based math and science for children, visit: