Guntharp MN, Browning F, Royle G. Using Toy Animal Ball Poppers to Explore Projectile Motion in Algebra and Calculus Classes. ojsm [nternet]. 2017 Feb. 1 [cited 2026 Nov. 7];74(2). vailable from: http://voyager.janeway.systems:9999/index.php/OJSM/article/view/5280