Teacher's Resource Sample Chapter 9 with Reduced Pages

AnswersExample 1: Show You Knowa)13 16 20b) A ≥ 16Example 2: Show You Knowa) n > –136b)-14 -12 -10c) t ≤ 0.25. Example: The range of temperatures, in Celsius, in aNorthern community during the month of January.d)-10 -7 -4Example: x ≤ –7Example 3: Show You KnowExample: The temperature during that hour was greater than or equal to–19 °C and less than or equal to 22 °C.-19 22–19 ≤ t ≤ 22AssessmentAssessment for LearningExample 1Have students do the Show You Knowrelated to Example 1.Example 2Have students do the Show You Knowrelated to Example 2.Example 3Have students do the Show You Knowrelated to Example 3.Supporting Learning• Encourage students to verbalize their thinking.• You may wish to have students work with a partner.• Ensure that students can verbalize and write algebraically the difference between anequation and an inequality. Some students may benefit from including examples of eachin their Foldable.• Encourage students to verbalize their thinking.• You may wish to have students work with a partner.• Students need extra experience with inequalities that have variables on the right side.Review the equivalent forms.• Encourage students to verbalize their thinking.• You may wish to have students work with a partner.• Some students may benefit from additional coaching on double inequalities. Review how todetermine which value is included and which is not.• Some students may benefit from dividing a double inequality into two parts, graphing each,and then identifying the common solution.Chapter 9 • MHR 15