Guntharp MN, Browning F, Royle G. Using Toy Animal Ball Poppers to Explore Projectile Motion in Algebra and Calculus Classes. ojsm [Internet]. 2017 Feb. 1 [cited 2024 Apr. 28];74(2). Available from: https://ohiomathjournal.org/index.php/OJSM/article/view/5280