Compound transformations

There are 40 NRICH Mathematical resources connected to Compound transformations
Triangular Tantaliser
problem

Triangular tantaliser

Age
11 to 14
Challenge level
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Draw all the possible distinct triangles on a 4 x 4 dotty grid. Convince me that you have all possible triangles.
Combining Transformations
problem

Combining transformations

Age
11 to 14
Challenge level
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Does changing the order of transformations always/sometimes/never produce the same transformation?
Frieze Patterns in Cast Iron
article

Frieze patterns in cast iron

A gallery of beautiful photos of cast ironwork friezes in Australia with a mathematical discussion of the classification of frieze patterns.
The Frieze Tree
article

The frieze tree

Patterns that repeat in a line are strangely interesting. How many types are there and how do you tell one type from another?
Going Places with Mathematicians
article

Going places with mathematicians

This article looks at the importance in mathematics of representing places and spaces mathematics. Many famous mathematicians have spent time working on problems that involve moving and mapping things.
Maurits Cornelius Escher
article

Maurits cornelius escher

Have you ever noticed how mathematical ideas are often used in patterns that we see all around us? This article describes the life of Escher who was a passionate believer that maths and art can be intertwined.
Mathematical Patchwork
article

Mathematical patchwork

Jenny Murray describes the mathematical processes behind making patchwork in this article for students.
Grouping Transformations
article

Grouping transformations

An introduction to groups using transformations, following on from the October 2006 Stage 3 problems.
Paint rollers for frieze patterns.
article

Paint rollers for frieze patterns.

Proofs that there are only seven frieze patterns involve complicated group theory. The symmetries of a cylinder provide an easier approach.