Year 5

# Exploring reflections and translations using coordinates

Year 5

# Exploring reflections and translations using coordinates

## Switch to our new maths teaching resources

Slide decks, worksheets, quizzes and lesson planning guidance designed for your classroom.

## Slide deck

Download slide deck

## Lesson details

### Key learning points

- In this lesson, we will investigate translating and reflecting shapes by comparing the coordinates without a grid.

### 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

Share with pupils

Loading...

### 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

### 5 Questions

Q1.

Which of the following happens when a shape is reflected by a line of reflection along the x-axis?

The reflected shape has the same y coordinate as the original shape

The shape is translated to the left

The shape is translated to the right

Q2.

If a shape is reflected by a line of reflection along the x axis then which of the following is correct?

Both the x and y coordinates of the reflected shapes must change

Both the x and y coordinates of the reflected shapes must stay the same

The y coordinate will definitely stay the same

Q3.

If a triangle has the coordinates (1,3), (1,4), (2,3) and after a transformation becomes (1,-3), (1,-4) and (2,-3), which if the below have happened?

The triangle has been reflected onto the y-axis

The triangle has been translated down

The triangle has been translated up

Q4.

If a triangle which has the coordinates (1,-1), (1,-3) and (3,-3) is reflected by a line of reflection along the y-axis, what will it's new reflected coordinates be?

(-1,1), (-1,3), (-3,3)

(-1,1), (1,3), (3,3)

(1,-1), (1,-3), (3,-3)

Q5.

A triangle with coordinates (-2,-2), (-2,-4) and (-4,-4) is reflected first by a line of reflection along the x-axis, and then reflected by a line of reflection along the y-axis, what will the new coordinates be?

(-2,2) (-2,4) (-4,4)

(2,2) (-2,4) (4,4)

(2,2) (2,4) (-4,4)