This back-to-school STEM / STEAM Challenge brings the joy back to your classroom with collaborative, hands-on, brain-busting work (disguised as fun)! This is a great intro to Newton’s Third Law of Motion, which is part of 3rd and middle school NGSS standards! (3PS2-1, MS-PS2-1, and MS-PS2-2) The basic premise: Individually or in partners/groups, students will design and build an apple wrecking ball built for annihilation! • Students will set up marker “bowling pins” and try to knock down as many