Activity at a glance Time to complete Approximately 2-2.5 hours Age level Advanced high school, College, or Professional school Bloom's level(s) BL3 - Analyze BL4 - Analyze BL5 - Evaluate Learning objective After completing this activity , students will be able to conduct an experiment (BL3 - Apply) simulating different patterns of muscle co-contraction and analyze (BL4 - Analyze) the results of their experiment to explain (BL5 - Evaluate) how muscle co-contraction and coordination relate to forces, motions, injury, and injury prevention at the knee joint. Assessment Students: Hints are provided throughout the activity to help students answer the questions on  the worksheet , however no answers are provided. Educators: Educators can assess students' answers to the questions on the worksheet using the answer key (only visible to educators). Materials needed See Materials needed Systems/Tissue types Muscular Skeletal Core concepts Motor control ​​Structure & function System integration Competencies Motion analysis Observation Scientific reasoning Scientific communication Activity ID HSKN4