The Slopes of Lines guided notes introduces the concept of slope, classifying slopes (positive, negative, zero, or undefined), the slope formula, and ends with slopes of parallel and perpendicular lines. Made to be used as doodle notes (if desired), the scaffolded notes provide an extra opportunity to keep students engaged and provide them with valuable foundations for other concepts we will discuss in Geometry. The notes also come with two answer keys (one without examples for classroom teachin