May 27 (Bloomberg) — President Barack Obama was host for a fourth White House Science Fair today, using the event to emphasize the achievements of female students in science, math, technology and engineering.

In conjunction with the event, Obama announced a $35 million Department of Education competition program to help reach his goal of training 100,000 new teachers. The administration also plans to expand the Americorps volunteer program to provide schooling in STEM subjects to 18,000 low- income students this summer.

Obama met with students who worked on such projects as working on a cure for form of liver cancer, using gel in helmets to reduce sports concussions, and using a computer program to speed identification of a flu pandemic to develop vaccines more quickly. More than 100 students from more than 30 states took part.