Angus and Jonathon team up for some medieval adventure, as they design, build and test a trebuchet. Kart racers Allie and Paige of Team “Beat the Boys,” use an onboard computer to find the optimum gear ratio for their kart before a race. Tammy never gets all bent out of shape! She's a bioengineer who specializes in seat ergonomics, which helps people sit in healthier postures.

Originally released by Big Media Holdings LLC, 2013. Streaming video file encoded with permission for digital streaming by Infobase on February 10, 2017.

Fling It! (3:03); --Fling It! Sling Length Test (5:58); -- Science Is It (4:41); -- Gear Up (5:02); -- Riddle Answer (0:49); -- Credits: Simple Machines (0:41); .