1. Work with one of the Andrews professors, either during the school year or during the summer. Talk to your professors about their research, and ask if you can participate.
2. Participate in one of the National Science Foundation summer REU programs.
3. Enjoy a summer internships with one of the national labs, government, or industry.
4. Explore a summer program with another university.
National Science Foundation REU (Research Experience for Undergraduates)
http://www.nsf.gov/crssprgm/reu/list_result.cfm?unitid=5044 (list of sites)
http://www.maa.org/students/undergrad/ (list of sites)
Summer Internships and REUs
http://www.math.clemson.edu/~kevja/REU/ (Clemson University)
https://www.math.tamu.edu/undergraduate/research/REU/ (Texas A&M)