Year 7 Maths
Kookaburra week - Lesson 4
The properties of triangles
Introduction
Watch the video below for an introduction to the lesson.
Activity 1 - Classifying triangles
Task 1
Watch the video, Math Antics - Triangles.
Pause the video at 04:22 and write the table into your workbook or folder
Fill out the table with examples
Continue the video to make sure your examples are accurate.
Math Antics - Triangles
Duration 7:39
Task 2
Complete the interactive to:
Practise classifying triangles as:
scalene
isosceles
equilateral
acute angled
right angled
obtuse angled.
Note: The shape may fit into more than one category.
Demonstrate your understanding of why triangles are classified the way they are.
Note: At the end of the interactive, make sure you use the blue Export text button to get your written answers in a document you can submit to your teacher.
Activity 2 - Angle sum of triangles
Task 1
You will need to have the following things ready before you start:
A4 piece of paper
pencil
ruler
scissors.
Draw 2 triangles of any size on your piece of paper.
Watch the video, Sum of Interior Angles of a Triangle.
Follow along with the video and complete the instructions using your triangles.
Stick the final product into your exercise book or folder.
In your exercise book or folder, underneath the triangles you stuck in, write the conclusion that you reached based on the video.
Sum of Interior Angles of a Triangle
Duration 2:26
Task 2
Complete the interactive to learn how to find unknown angles using the angle sum of a triangle.
Activities too easy?
Visit the Angles in a Triangle page on Transum.org and try to complete Level 2.
Handing in your work
Don't forget to hand in the work you completed today!
Your teacher will have told you to do one of the following:
Upload any digital documents you created and any photos you took of your written work to your Learning Management system (MS Teams, Google Classroom for example).
Email any digital documents you created and any photos you took of your written work to your teacher.
Make sure you keep any handwritten work you did in your exercise book or folder as your teacher may need to see these when you are back in class.