PHILADELPHIA (CBS) -- Some schoolchildren in West Philadelphia spent the afternoon Friday doing something they've never done before: swinging off monkey bars and sliding down sliding boards near their school.

St. Rose of Lima Catholic School in West Philadelphia got a special treat from the folks at Keystone Mercy Health Plan -- they got a playground (above).

(Girl:)  "I was waiting for this playground to get here!  I was so happy."

And Anne Morrisey with Keystone Mercy says they did it in one day:

"There's a fair amount of prep work that goes along with it, but you bring in a lot of people."

It's the ninth playground Keystone Mercy has built since 2007:

"Part of the mission of our organization is to build healthy communities.  So, part of a healthy child's world is to have a safe place to play where they  can exercise and get physically active."

(Girl:)  "I am super excited to have a place to play.  That parking lot that we play in is so small and we don't have nowhere to play, and so I'm happy that we have a playground now."

Reported by Hadas Kuznits, KYW Newsradio.
Photo by Hadas Kuznits