Unit 8 · Transformation
Transformation
Mathematics · Grade 7
What You Will Be Able To Do
➡️Translate, reflect and rotate a shape accurately on a grid
🔍Look at a picture and say which transformation was used
✍️DESCRIBE it fully, which is worth as many marks as drawing it
🧵Design a repeating pattern the way a textile printer actually does
“
A transformation may slide the shape, turn it or flip it, but it may not stretch it, shrink it or bend it. The image is always congruent to the object.
Presenter notes: Bring in a piece of printed cloth, a shawl or a length of dress material with a repeating pattern, and hold it up before saying anything about mathematics. Ask how the person who made it produced hundreds of identical motifs. Somebody will say a machine or a stamp, which is exactly right, and then ask what instruction the machine was given each time. That instruction is a transformation. Keep the cloth at the front all lesson and come back to it.