Learning goals: Teacher Facing Apply operations with rational numbers to calculate a stock’s new value, change in value, or change expressed as a signed percentage of the previous value. Compare (orally and in writing) changes in the value of different stocks, including the dollar amount and the percentage of the previous value. Interpret (orally) tables that represent the values of different stocks in the stock market. Full lesson plan (warm-up, activities, synthesis, cool-down prompt) from 7.5 Rational Number Arithmetic, Grade 7.