Working with Photos
This activity from Cre8ate maths develops understanding of enlargement. Students work in groups and, intuitively, sort sets of photos to identify those which have been enlarged from an original image. They then justify their decisions and share their explanations with the rest of the class. Photo sets three and four may cause…
Pixel Perfection
This investigation from Cre8ate maths involves students in finding the best size screen for a television. If you have a large flat screen and view a standard analogue or digital picture the individual pixels are visible if you are sitting too close to the screen. Working in small groups of 3 or 4, students measure the pixel density…