Learning goals: Teacher Facing Choose and create diagrams to help compare two situations and explain whether they happen at the same rate. Justify that two situations do not happen at the same rate by finding a ratio to describe each situation where the two ratios share one value but not the other, i.e., $a:b$ and $a:c$, or $x:z$ and $y:z$. Recognize that a question asking whether two situations happen “at the same rate” is asking whether the ratios are equivalent. Full lesson plan (warm-up, activities, synthesis, cool-down prompt) from 6.2 Introducing Ratios, Grade 6.