Classroom Resources

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Mobile Puzzles – Making Sense of Variables and EquationsArticle | By At Right Angles |  Dec 14, 2018 Mathematics | 0 Likes

For the middle school student, the transition from arithmetic to algebra is often quite daunting.

Make a musical instrument from a broken ballon - Yes it sounds like a bagpipeVideo | By Arvind Gupta |  Dec 05, 2018 Science & Technology | 0 Likes

Press fit a long plastic pen tube in a bottle lid. Press a hard straw on the rim for blowing. Stretch a torn balloon on the lid to make a taut membrane.

Fun with Dot Sheets - 2Article | By At Right Angles |  Dec 03, 2018 Mathematics | 0 Likes

In this article, we focus on investigations with graph paper. Pages 45 & 46 give guidelines for the facilitator, pages 43 & 44 are a worksheet for students.

Fun with Dot Sheets - 1Worksheet | By At Right Angles |  Aug 07, 2018 Mathematics | 0 Likes

Beginning with this issue, we start the TearOut series. In this article, we focus on investigations with dot sheets.

A Note on Armstrong NumbersArticle | By At Right Angles |  Dec 03, 2018 Mathematics | 0 Likes

In this article, student Satvik Kaushik investigates Armstrong numbers.

Arc - centre TheoremArticle | By At Right Angles |  Dec 03, 2018 Mathematics | 0 Likes

In this short note, we discuss a theorem (arc-centre theorem) which states that an arc can have only one centre of curvature.

Shapes with Sutli: The String GameArticle | By At Right Angles |  Nov 22, 2018 Mathematics | 1 Like

This article describes an activity where students created different geometrical shapes using a closed-loop string and developed conceptual understanding by engaging wi

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