Teacher development

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Primitive Pythagorean TripleArticle | By At Right Angles | Mar 27, 2019  | Mathematics | 0 Likes

A classroom observation. A colleague a shared an observation that had come up during an exploratory class he was taking at the middle school level.

On Adding Magic TrianglesArticle | By At Right Angles | Mar 27, 2019  | Mathematics | 0 Likes

Magic triangles can be added to each other term by term, the same way that magic squares can be added to each other.

Addendum to Theorem concerning A Magic TriangleArticle | By At Right Angles | Mar 27, 2019  | Mathematics | 0 Likes

In the July 2018 issue of At Right Angles, the topic of magic triangles was explored, a ‘magic triangle’ being “an arrangements of the integers from 1 to n on the side

Cutting a Square into Equal PartsArticle | By At Right Angles | Mar 27, 2019  | Mathematics | 0 Likes

The article talks about a simple activity which can be performed with students of primary, middle and high school.

Addendum to Hill CiphersArticle | By At Right Angles | Mar 27, 2019  | Mathematics | 0 Likes

he Hill Cipher method in cryptography has been described in detail in earlier issues of At Right Angles [1] [2].

W.W. Sawyer The Universal Math TeacherArticle | By At Right Angles | Mar 27, 2019  | Mathematics | 0 Likes

As a corollary of Section 8 of the Right to Education Act, every young Indian citizen in elementary school today has the legal right to get mathematics education of go

The Constants of Mathematics – Part IIIArticle | By At Right Angles | Mar 27, 2019  | Mathematics | 0 Likes

In this article, which is the third of our series on mathematical constants, we continue our exploration of Euler’s constant e.

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