LIBRARY PROGRAM: “Spark – Catapult Machines” February 26, 2019 By Salmon Library Staff Leave a Comment Spark: A Junior Exploration in STEMIntroducing “Spark” programs for junior STEM explorers! (Ages 6-11) On Friday Mar 8th, at 1PM at Salmon Public Library we’ll be tackling catapult machines. Learn physics while having fun. Did I put too much force? Or is it Torque? Will wheels help? Get your aim on with this engaging exploration of STEM for juniors.