Students practice adding and subtracting fractions with unlike denominators following a scaffolded 4 step process. As students progress through each step there is guided practice on when and if to apply GCF and LCM to simplify. Scaffolds and animations provide direction and step-by-step procedures to increase visual understanding. The lesson is completely editable and includes a warm-up (skill review), lesson introduction, guided practice, shared practice and an optional independent activity.