It's been almost 50 years since Neil Armstrong and Buzz Aldrin walked on the moon, but children who attended the 14th annual Engineering and Science Festival Saturday at Boise State University know what the rocket that helped get the astronauts into space looks like.

Some of the participants at the festival helped build a 300-pound, 11 1/2-foot-tall replica of a Saturn V moon rocket, using more than 32,000 LEGO bricks.

Another activity, also with LEGO bricks, children helped build a logo for the Idaho STEM Action Center, one of the festival's sponsors. The logo will go on display at the center's downtown Boise headquarters.

A photo gallery is below, and also available through this link.

Festival participants also had the opportunity to learn about the basics of electrical circuits, build a bubble-powered robot, and participate in many other activities designed to encourage children to explore possible careers in science, technology, engineering, and mathematics-related fields.

"It's important that we get students excited about it now, so they continue to be excited about those fields and go further into college and those fields as well," said Leandra Aburusa, student support coordinator for the College of Engineering at Boise State University.

About 7,000 people pre-registered to attend the festival, but officials say the number who showed up was closer to 20,000.