John Taylor, a CU-Â鶹ӰԺ physics professor, will present an interactive lecture on the importance of understanding mathematical concepts on Wednesday, Feb. 10, at the Â鶹ӰԺ Public Library. The lecture, titled "Johnny Needs to Know More Math," is part of the spring Chancellor's Community Lecture Series, which is featuring CU arts, science and music faculty this spring. The talk is at 7:30 p.m. in the library's main auditorium.