Year 5
Exploring reflections and translations using coordinates
Year 5
Exploring reflections and translations using coordinates
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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.
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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)