Millions of children are missing limbs because of medical conditions and wars.

Inspired by one of them – a cheerful 6-year-old boy who grew tired of classmates teasing him about his missing arm — University of Central Florida engineering students devoted their spare time to solving the problem.

The team designed and built Alex Pring an arm using a 3D printer, and they gave it to him for free. Since then, families in more than 25 countries have asked the UCF students to help their children.

The students, who call themselves Limbitless Solutions, are using their knowledge and technology to solve problems and share hope. And that’s why Microsoft is today highlighting UCF’s Limbitless team in a national social media campaign called #The Collective Project . They have released a video that tells the team’s story. To see it click here.

The goal of the project is to highlight college students who are using technology to change the world. The Fortune 500-company known for software products is urging students to realize that what they do in their spare time matters, and that they can change the world. Students from the University of California at Berkeley and Penn State are also highlighted in the campaign.

Today, it’s all about UCF. Keep an eye out this week for shout outs on Facebook, Twitter, Instagram, Tumblr  and a video on YouTube .

Follow the links to learn how to get involved with Limbitless and find about three Microsoft-sponsored events happening on campus during UCF’s Engineering Week, Feb. 23-27. The week will conclude with an attempt for UCF to set a Guinness World Record.

Join the students of Limbitless on their quest to change the world and show everyone what it means to be a UCF Knight. #UCFChangestheWorld