Children in Kindergarten through fifth grade are invited to use their hands and imaginations to explore engineering and design challenges by building with Lego bricks. Sessions run Tuesday, September 3, October 1, November 5, and December 10. Early registration for residents of Bradford Woods, Franklin Park, Marshall, McCandless & Ross begins August 12. Open registration for all others begins one week before each session. This is a free program. Please register by phone 412-366-8100 ext 123 or at the Children's Reference desk.