![IRG4a_Fig2](https://www.lrsm.upenn.edu/wp-content/uploads/2018/10/IRG4a_Fig2-300x225.jpg)
MRSEC undergraduates Lizzy Dresselhaus and Natasha Iotov demonstrate diffraction of light to 6th-8th grade middle school girls participating in the Girls in Engineering Math and Science (GEMs) summer camp. (Kagan)
The Cherie Kagan (IRG-4) group created a Lego Optics lab for Penn’s Girls in Engineering, Math and Science (GEMS) summer camp for 6th-8th grade girls.
Middle school girls learn about the reflection, refraction, polarization, and diffraction of light hands-on. Lego is used to build mounts for light sources, optical elements, and detectors and the interaction of light with matter.