Year 5

# Exploring reflections and translations (Part 2)

Year 5

# Exploring reflections and translations (Part 2)

## Slide deck

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## Lesson details

### Key learning points

- In this lesson, we will look at more examples of how a shape can be reflected or translated wihlst preserving its appearance.

### Licence

This content is made available by Oak National Academy Limited and its partners and licensed under Oak’s terms & conditions (Collection 1), except where otherwise stated.

## Video

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### 5 Questions

Q1.

How many types of transformations are there?

2

3

6

Q2.

Which statement below is correct?

Reflections and Translations always look the same

Reflections and Translations never look the same

You can easily tell if congruent shapes have been reflected or translated

Q3.

Which statement below is correct?

It is only hard to tell if a shape has been translated or reflected if the shape is a quadrilateral

It is only hard to tell if a shape has been translated or reflected if the shape is a rectangle

It is only hard to tell if a shape has been translated or reflected if the shape is regular

Q4.

Which statement below is correct?

If a right angled triangle has been reflected along the x axis then it is not obvious whether it has been reflected and not translated

If a right angled triangle has been reflected along the y axis then it is not obvious whether it has been reflected or translated

If an equilateral triangle has been reflected along the y axis then it is obvious that it has been reflected and not translated

Q5.

If the vertices of triangle A are (-5,3), (-5,1) and (-2,1) and the vertices of triangle B are (-5,-1), (-5,-3) and (-2,-3), which of the below best describes the transformation from A to B?

Reflected onto the x axis

Reflected onto the y axis

Translated down by 4 squares

### 5 Questions

Q1.

Which of the statements below is correct?

Reflection is the only type of translation

Transformations and reflections are types of translations

Transformations are a type of translation

Q2.

Which of the statements below is correct?

None of the above

When we reflect a square across the y-axis we can also translate it up/down

When we reflect a square across the y-axis we cannot also translate the original shape so it is the same as the translated square

Q3.

What would happen if we reflected a shape onto the x-axis and then onto the y-axis and then back onto the x-axis and then onto the y-axis?

None of the above, it depends on the actual shape

The shape would be translated 1 square away from the original

The shape would be translated to the left

Q4.

Which of the statements below is correct?

When we reflect a square onto the x-axis the size of the shape changes

When we reflect a square onto the x-axis we can also translate it left/right

When we reflect a square onto the x-axis, the reflected shape must pass through the origin

Q5.

Which of the statements below is NOT correct?

If we reflect a rectangle across the x-axis then we can also say that this shape has been translated either up or down

If we reflect a rectangle across the y-axis we can also say that this shape has been translated either to the left or to the right

If we reflect a right-angled triangle across the y-axis we can also say that this shape has been translated either to the left or right