Join National High School PE TOY, Charla Krahnke for OPEN’s Plug & Play fitness activities, Creative Mode Fitness, and Fitness Knowledge modules are designed to facilitate instruction through vigorous activities that can be done as instant activities or integrated into your curriculum throughout the entire school year. OPEN recommends that you build these activities into your instructional routine with at least one activity integrated into every instructional block plan. Fun and active session to assist students in improving their fitness.