Learning goals: Teacher Facing Comprehend the terms “population” and “sample” (in spoken and written language) to refer to the whole group and a part of the group under consideration. Describe (orally and in writing) a sample for a given population. Explain (orally) that a sample may be used when it is unreasonable to gather data about an entire population. Full lesson plan (warm-up, activities, synthesis, cool-down prompt) from 7.8 Probability and Sampling, Grade 7.