Year 5

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.

## Lesson details

### Key learning points

1. 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

## Worksheet

Share with pupils

## Starter quiz

Share with pupils

### 5 Questions

Q1.
Which of the statements below is correct?
Reflection is the only type of translation
Correct answer: Reflections and translations are types of transformations
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
Correct answer: When we reflect a square across the y axis we can also translate it left/right to the same position
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
Correct answer: The shape would go back to it's original position
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
Correct answer: When we reflect a square onto the x-axis we can also translate it up/down
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
Correct answer: None of the above. It would depend on the orientation of the right angled triangle

## Exit quiz

Share with pupils

### 5 Questions

Q1.
Which of the following happens when a shape is reflected by a line of reflection along the x-axis?
Correct answer: The reflected shape has the same x coordinate as the original shape
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
Correct answer: The x coordinate will definitely 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?
Correct answer: The triangle has been reflected onto the x-axis
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?