High school students in a Saturday program at Temple developed Workstream, an online-tutoring app that won first-place honors - and $5,000 in seed money - at Tuesday's Switch Philly. It all played out in less than three weeks, said Temple's Jamie Bracey, who oversees the program that brought the students together: the Mathematics, Engineering, Science Achievement (MESA) program. Temple MESA currently works with about 375 teens from Philadelphia and the suburbs.