This MS.LS4.6 Activity Bundle directly supports NGSS Standard MS.LS4.6: Use mathematical representations to support explanations of how natural selection may lead to increases and decreases of specific traits in populations over time. This package includes seven, forty five minute, 5E investigations. Each investigation includes a lesson plan, instructor activity guide, students activity guide, response worksheet, answer key, and digital response worksheet. Just print, prep, and it’s ready to go.