Learning goals: Teacher Facing Comprehend that the phrase “proportional relationship” (in spoken and written language) refers to when two quantities are related by multiplying by a “constant of proportionality.” Describe (orally and in writing) relationships between rows or between columns in a table that represents a proportional relationship. Explain (orally) how to calculate missing values in a table that represents a proportional relationship. Full lesson plan (warm-up, activities, synthesis, cool-down prompt) from 7.2 Introducing Proportional Relationships, Grade 7.