dilation task cards

Dilation Task Cards

with and without QR codes

Dilation Task Cards with and without QR codes

• There are ten cards. Topics covered:• Identifying translations, rotations, reflections, and dilations• Graphing dilations in the coordinate plane• Finding scale factor and coordinates from given information• Proving triangle similarity

• I usually print the task cards on card stock and put each in a plastic sleeve so I can reuse each year. This also makes it less likely that students will write on the cards.

• There are two sets of cards included: With QR codes (with answers) and without QR codes.

• I prefer to use the QR codes. This allows students to self-assess by using a QR code reading app on their smartphone. There are many free QR code reader apps available.

• Suggested uses:– Make a single set and hang them around the room. Students move from station to station.– Make a set for each student.– I prefer to divide my class into 6 groups of 4 and make one set for each group.

All diagrams created using geogebraQR codes generated via http://goqr.me/

What type of transformation is shown?• Translation• Reflection• Rotation• Dilation

1

What type of transformation is shown?• Translation• Reflection• Rotation• Dilation

2

What type of transformation is shown?• Translation• Reflection• Rotation• Dilation

3

What type of transformation is shown?• Translation• Reflection• Rotation• Dilation

4

Apply the dilation

What will be the coordinates of T’?

5

Given J (- 3, 5) , L (- 4, 9), and O ( 2, - 7), use the scale factor 5 to find the coordinates of J’L’O’.

6

Find the coordinates of point T and the scale factor.

7

Given: J (-4,0), K ( -16, 20), L (8, 8), M (2, -1), N (-4, 9), and P (8, 3)

Prove: Ans:

or Corresponding sides are proportionateThe triangles are similar by SSS ~

8

has vertices at D (-2,0), E ( -8, 0), and F (-2,7). After a dilation the vertices of D’ (-3,1), E’ (-12,0), and F’ (-3,10.5). Find the scale factor.

9

is a dilation of .Find the scale factor and the coordinates of B’.

10

What type of transformation is shown?• Translation• Reflection• Rotation• Dilation

1

What type of transformation is shown?• Translation• Reflection• Rotation• Dilation

2

What type of transformation is shown?• Translation• Reflection• Rotation• Dilation

3

What type of transformation is shown?• Translation• Reflection• Rotation• Dilation

4

Apply the dilation

What will be the coordinates of T’?

5

Given J (- 3, 5) , L (- 4, 9), and O ( 2, - 7), use the scale factor 5 to find the coordinates of J’L’O’.

6

Find the coordinates of point T and the scale factor.

7

Given: J (-4,0), K ( -16, 20), L (8, 8), M (2, -1), N (-4, 9), and P (8, 3)

Prove:

8

has vertices at D (-2,0), E ( -8, 0), and F (-2,7). After a dilation the vertices of D’ (-3,1), E’ (-12,0), and F’ (-3,10.5). Find the scale factor.

9

is a dilation of .Find the scale factor and the coordinates of B’.

10