Middle school-aged children are invited to attend the Three Rivers Ultimate Frisbee Jamboree.
The event will be 1 to 4 p.m. Saturday at Columbia Point Marina Park in Richland.
Participants will learn the basic skills of ultimate frisbee, play in a scrimmage and watch a game by the local Desert Lorax players.
The first 50 players to register will receive a free disc. Participants need to bring a white and colored shirt, water and cleats or tennis shoes.
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Ultimate Frisbee is a minimal-contact sport in which teams try to complete passes with a disc into an end zone.
For more information or to register, call 460-8229 or visit threeriversultimate.org .