Focus

Math 10C Module 1 Lesson 2 This collage shows a photograph of a skateboarder in a skate park and a photograph of two colourful waterslides.

In Lesson 1 you learned how to estimate SI (metric) and imperial measurements using referents. Estimation is a very important skill that helps you to plan ahead and also to check that your results are reasonable. You will continue to build on this skill in Lesson 2.

Perhaps as part of your unit project, you need to create a cylindrical shape, a very small opening, or a quarter pipe. How can you figure out the required measurements? In what units will you measure your object, and with what instrument?

In this lesson you will expand on your ability to measure while you think about how you can measure large, small, or curved objects.

Outcomes

At the end of this lesson, you will be able to

  • justify the choice of units used for determining a measurement in a problem-solving context
  • solve problems that involve linear measure, using instruments such as rulers, calipers, or tape measures
  • describe and explain a personal strategy used to determine a linear measurement; e.g., the circumference of a bottle, the length of a curve, or the perimeter of the base of an irregular 3-D object

Lesson Questions

  • How do you choose the appropriate techniques, instruments, and formula to describe the dimensions of an object?
  • How can you measure the dimensions of objects of irregular shape or size?

Lesson Completion and Assessment

As you work through each lesson, complete all the questions and learning activities in your binder using paper and pencil, clearly labeling your work (they refer to this as your course folder). These include the Are you Ready, Try This, Share and Self Check questions. Check your work if answers are provided. Remember that these questions provide you with the practice and feedback that you need to successfully complete this course.
Once you have completed all of the learning activities, take the Lesson Quiz. This is the assessment for each lesson and is located under the Assess tab or using the Quizzes link under the Activities block.

** Note – Share questions may have to be done on your own depending on your learning situation**