Transformations: slide, flip and turn

Translation, reflection and rotation. Read one part at a time and tap “I know this”. Then test yourself in the quiz.

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Slide, flip, turn

Transformation	What happens?
translation (slide)	the shape moves without turning
reflection (flip)	the shape is flipped over a mirror line
rotation (turn)	the shape turns about a point: ¼, ½ or ¾ turn, clockwise or anticlockwise

Rule

With all three the shape keeps the same size and shape.

Describe a rotation by its size and direction: a ¼ turn clockwise; a ½ turn leaves the shape upside down.
In a reflection every point of the image is the same distance from the mirror line as the original point, just on the other side.

Tap when you could tell someone without looking.

Remember this: your summary

Write these points in your book. Read them again the night before the test.

Memory trick

Slide, flip, turn: the shape stays the same shape.

Flash cards · Tap to turn over

First say the answer yourself, then turn the card over.

Now the real quiz!

The quiz has many more questions on this topic. Every question shows straight away whether you are right and explains why.

For parents

Let your child work the examples on paper and explain them to you.
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Follows CAPS for Grade 4 Mathematics. Always check your teacher’s notes and textbook too.