Draw polygons specified by translations
I can draw polygons on a grid according to a given translation.
- Year 4
Draw polygons specified by translations
I can draw polygons on a grid according to a given translation.
Lesson details
Key learning points
- Up, down, right and left can be used to move objects on a grid.
- Combine direction with a number of squares to give accurate directions.
- The move can include a horizontal and a vertical direction.
Keywords
Translate / translating - Sliding or moving a shape without rotating or flipping it means to translate.
Translation - Translation is a transformation in which every point of a shape moves the same distance in the same direction.
Horizontal - Horizontal is side to side, like the horizon.
Vertical - Vertical is an up-down direction or position.
Common misconception
Pupils might think that translating a shape changes its size, shape, or orientation, rather than just its position.
Clarify that translation only changes the position of the shape on the grid; the shape itself remains identical in size, shape, and orientation. Use visual examples to compare the shape before and after translation to reinforce this concept.
Licence
Lesson video
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Prior knowledge starter quiz
6 Questions
Q1.Marking a vertex helps you track a translation. True or false?
Q2.What translation is needed to move the polygon from A to B?
Q3.Lucas wants to translate the polygon from A to B. Which translation is incorrect?
Q4.Look at Sofia’s directions. Which image shows the correct translation? 3 squares right and 1 square down. What’s the new position?
Q5.Complete to the translation from A to B. squares right. 2 squares down.
Q6.Sofia says she has translated the polygon 4 squares right and 1 square down. Is she correct?
Assessment exit quiz
6 Questions
Q1.Jacob says ‘I’ve translated this polygon A to B using these directions: 4 squares left and 1 square up.’ Is he correct?
Q2.Describe the translation of A to B.
Q3.Describe the translation of A to B. The same number is in both instructions.
squares left. ___ squares down.
Q4.Match the translations of the shapes to the instructions.
Q5.Sofia is struggling to find the original positions of polygons after a translation What helpful tip can we give?
the directions.
Q6.Lucas translates a polygon 3 squares right and 2 squares down. The image shows the ending position. Describe the translation to get it back to its original position:
