White House Science Fair
US President Barack Obama talks with a Girl Scout Brownie troop from Tulsa, Okla. about their design for a "flood proof" bridge, during the White House Science Fair in Washington on May 27, 2014. Jim Watson—AFP/Getty Images

Kids Show Off to Obama at White House Science Fair

May 27, 2014

One hundred students from 30 different states took over the White House Tuesday to participate in the fourth annual White House Science Fair.

This year had a special focus on girls involved in science, technology, and engineering. Girl Scout Troop 2612 showed President Obama what they were made of by presenting a "Flood Proof Bridge," designed with disaster relief in mind.

Peyton Robertson, 12, also looked to flood prevention by creating a sandless sandbag.

Barack ObamaPresident Barack Obama learns about sandless sandbags, the invention of Peyton Robertson, 12, of Ft. Lauderdale, Fla., while touring the 2014 White House Science Fair exhibits in Washington on May 27, 2014.  Susan Walsh—AP 
All products and services featured are based solely on editorial selection. TIME may receive compensation for some links to products and services on this website.