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Fractional Enlargements 01 December 201801 December 2018 Fractional Enlargements

Enlarge shape A by a scale factor of 1 2 label it A’. 6 Count the horizontal and vertical distance to each vertex. 2) Divide each distance by 2 and plot the new vertex. A 8 Join the points, label the shape. & check 3 2 X 4 A’ 4 1 4 X X 2 2 3 6

Enlarge shape A by a scale factor of 1 2 label it A’. Count the horizontal and vertical distance to each vertex. 2) Divide each distance by 2 and plot the new vertex. A 8 Join the points, label the shape. & check 2 X A’ 4 1 4 X X No animation 2 2 3 6

Enlarge shape B by a scale factor of 1 3 , label it C. Count the horizontal and vertical distance to each vertex. 2) Divide each distance by 3 and plot the new vertex. Join the points, label the shape. & check 6 3 2 X 1 1 1 C B X X 3 3 3 2 6 9

Enlarge shape B by a scale factor of 1 3 , label it C. Count the horizontal and vertical distance to each vertex. 2) Divide each distance by 3 and plot the new vertex. Join the points, label the shape. & check 6 3 2 X 1 1 1 C B X X No animations. 3 3 2 6

Printouts for students to complete alongside the demonstration.

True SIT DOWN False STAND UP GCSE Question Answer Enlarge shape B by a scale factor of 1 3 , centre of enlargement (-2,0). (2 Marks) True SIT DOWN False STAND UP

Answer GCSE Question Answer Enlarge shape B by a scale factor of 1 3 , centre of enlargement (-2,0). (2 Marks) Answer

A C B E F D 1) Enlarge shape A by a scale factor of 1 2 . 1) Enlarge shape B by a scale factor of 1 2 . 1) Enlarge shape C by a scale factor of 1 2 . A C B 2) Enlarge shape D by a scale factor of 1 3 . 2) Enlarge shape E by a scale factor of 1 3 . 2) Enlarge shape F by a scale factor of 1 3 . E F D

A C B E F D 1) Enlarge shape A by a scale factor of 1 2 . 1) Enlarge shape B by a scale factor of 1 2 . 1) Enlarge shape C by a scale factor of 1 2 . A C B 2) Enlarge shape D by a scale factor of 1 3 . 2) Enlarge shape E by a scale factor of 1 3 . 2) Enlarge shape F by a scale factor of 1 3 . E F D

2) Enlarge shape B by a scale factor of 1 3 . Label it B’. 3) Enlarge shape C by a scale factor of 1 2 . Label it C’. A C B 1) Enlarge shape A by a scale factor of 1 2 . Label it A’. 5) Enlarge shape F by a scale factor of 1 3 . Label it F’. 4) Describe the enlargement of D to D’. F Worksheet to print. E D D’ 5) Enlarge shape E by a scale factor of 1 2 . Label it E’.

½ Answers A C A’ B C’ B’ F E D D’ 2) Enlarge shape B by a scale factor of 1 3 . Label it B’. 3) Enlarge shape C by a scale factor of 1 2 . Label it C’. A A’ C B C’ B’ 1) Enlarge shape A by a scale factor of 1 2 . Label it A’. ½ Answers 5) Enlarge shape F by a scale factor of 1 3 . Label it F’. 4) Describe the enlargement of D to D’. F E D D’ 5) Enlarge shape E by a scale factor of 1 2 . Label it E’.

Answers A C A’ B C’ B’ Scale Factor of 1 2 F E D E’ F’ D’ 2) Enlarge shape B by a scale factor of 1 3 . Label it B’. 3) Enlarge shape C by a scale factor of 1 2 . Label it C’. A A’ C B C’ B’ 1) Enlarge shape A by a scale factor of 1 2 . Label it A’. Answers 5) Enlarge shape F by a scale factor of 1 3 . Label it F’. 4) Describe the enlargement of D to D’. Scale Factor of 1 2 F E D E’ F’ D’ 5) Enlarge shape E by a scale factor of 1 2 . Label it E’.

Check your success! I can enlarge a shape by a fractional scale factor. I am confident enlarging a shape by a fractional scale factor. I can describe enlargements with fractional scale factors.

Check your success! I can enlarge a shape by a fractional scale factor. I am confident enlarging a shape by a fractional scale factor. I can describe enlargements with fractional scale factors. Effort this lesson?