1. Module 3

1.1. Lesson 1

Mathematics 10-3 Module 3 Lesson 1

Module 3: Linear Measure

 

Lesson 1: Estimating and Measuring Length and Distance

 

Focus

 

This photograph shows a garden greenhouse.

© jean morrison/shutterstock

Justina is designing a small greenhouse for her yard. She has gone over to her neighbour’s yard for some ideas. She likes the look of her neighbour’s greenhouse, but she is not sure the design is large enough for her needs.

 

Unfortunately, Justina did not bring her tape measure with her, so she is not able to take precise measurements. Instead, Justina walks the length and width of the greenhouse, and she estimates that the greenhouse is about five metres long and three metres wide. Justina goes inside the greenhouse and discovers there is a lot of head room, even for her. Justina is taller than many of her friends.

 

How would you estimate the dimensions of the greenhouse in the photograph?

 

Lesson Questions

 

In this lesson you will explore these questions:

  • What can you use to estimate length and distance for common imperial and SI units?
  • How can you improve your estimates of linear measures?
  • How can you estimate the dimensions of two-dimensional and three-dimensional objects?
  • How can you determine the perimeter of two-dimensional and three-dimensional objects?
Assessment

 

You will complete the Lesson 1 Assignment Booklet for assessment. Download the Lesson 1 Assignment Booklet and save it in your course folder now. You will receive instructions on how to complete the Assignment Booklet later in the lesson. You will also be prompted to start working on the Unit 2 Project.

 

There are other activities that you will complete throughout this lesson. It is important to complete all activities and save them in your course folder. Your teacher may ask to see your work at any time.

 

The lesson provides you with opportunities to investigate, review examples, and practise the knowledge and skills you are learning. In Self-Check activities you can compare your answers to see if you are on track. If you are having difficulty with concepts or calculations, contact your teacher.

 

Required Materials and Equipment

 

You will need a ruler or tape measure that shows imperial and SI units.