Teacher development

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Adventures in Problem SolvingArticle | By At Right Angles | Aug 09, 2019  | Mathematics | 0 Likes

In this edition of ‘Adventures’ we study a few miscellaneous problems.

A Geometric ExplorationArticle | By At Right Angles | Aug 09, 2019  | Mathematics | 0 Likes

A question about angle bisectors Consider a △ABC in which D, E and F are the midpoints of the sides BC, CA and AB respectively.

DIY Problems for the MIDDLE SCHOOLArticle | By At Right Angles | Aug 09, 2019  | Mathematics | 0 Likes

The tasks of this set require you to get down to some actual cut and paste work.

Exploring Fractals – The GeoGebra WayArticle | By At Right Angles | Aug 09, 2019  | Science & Technology | 0 Likes

In an article published in the November 2016 issue of At Right Angles we had seen how geometrical fractal constructions lead to algebraic thinking.

How to Prove It: Contradiction and ContrapositiveArticle | By At Right Angles | Aug 09, 2019  | Mathematics | 0 Likes

In this episode of “How To Prove It”, we consider two similar sounding terms which have great significance in higher mathematics: contradiction and contrapositive.

Can there be SSA congruence?Article | By At Right Angles | Aug 09, 2019  | Mathematics | 0 Likes

If two sides of a triangle have the same lengths as two sides of another triangle, and one angle of the first triangle has the same measure as one angle of the second

Fun with Dot SheetsArticle | By At Right Angles | Aug 09, 2019  | Mathematics | 0 Likes

The ‘TearOut’ series is back, with perimeter and area. Pages 1 and 2 are a worksheet for students, while pages 3 and 4 give guidelines for the facilitator.

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Teacher Development