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Grade 9 Mathematics

Videos are listed chronologically by date added, beginning with the most recent

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N826

Teaching for Numeracy

This video shows educators how to encourage students to learn and develop their numeracy skills. The activities are designed with a clear purpose, helping students to explore and think for themselves, show strategies and gain understanding. Opportunities are presented for students to share their ...

Open-uri20180509-21054-h7jj0j?1525903447 Play_large
N743

Triangles and Quadrilaterals

Series: Mathemania 3
Students will learn how triangles can be classified by side length and by angles. The different types of convex quadrilaterals are named and illustrated.

Open-uri20180509-21054-6y9uam?1525901921 Play_large
N742

Similarity, Ratio and Proportion

Series: Mathemania 3
Using examples from the natural world, students learn about similarity, ratio and proportion. Students will learn to survey to find the width of a river and use a mirror to find the height of a tall object.

Open-uri20180509-21054-13qhg31?1525895459 Play_large
N741

Naming and Measuring Angles

Series: Mathemania 3
Key concepts of angles are introduced such as defining and writing information about an angle, mathematical notation for rays, line segments and lines. Other topics introduced include obtuse angles, acute angles and congruent angles.

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N740

Geometric Transformations

Series: Mathemania 3
The narrator in the video uses everyday situations to explain translations, rotations, reflections and dilations.

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N739

Geometric Constructions

Series: Mathemania 3
A teen girl creates a mobile to hang above a baby's crib by using the following: bisecting an angle, perpendicular bisector of a line, construct a triangle, determine the centre of gravity, determine the inscribed circle of a triangle and determine the circumcircle of a triangle.

Open-uri20180528-23850-1xuvjc1?1527543277 Play_large
N738

Coordinate Geography

Series: Mathemania 3
The first quadrant of the Cartesian plane is explored in the context of a city street grid. Other features include using coordinates, graphing relationships and how slope is measured.

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V3593

Of Dice and Men

This animated program introduces the theory of probability. Viewers learn of its inception in the 17th century to settle a dispute over a game of dice, its relationship to predictability and its application to everyday situations - like the chances of being involved in an accident.