This straightforward, easy-to-follow guide will give students the scientific practice in argumentation today's science standards require. This book focuses on 24 activities for use in grades 6-8 drawn from the physical sciences, life sciences, and earth and space sciences. The activities are relatively quick and easy to implement, and the strategies embedded within them will help teachers understand and convey why engaging students in this practice matters, making it simple and straightforward to engage students in this practice and to identify some of the challenges that engaging in it might pose and how to address them.