Mathnasium of Birnham Woods opened Sept. 12 in Harmony Commons, located at 3466 Discovery Creek, Ste. 400, Spring. Owned by Afsheen Rizwan, the math-only learning center has specially trained math instructors to assist students in grades 2-12, who are either struggling in math or advanced in math. The center is open Mon.-Thu. 3-7 p.m. and on Saturdays from 10 a.m.-2 p.m. 832-702-7510. www.mathnasium.com/birnhamwoods