Linear functions and graphs

problem

Electric Kettle

Age

14 to 16

Challenge level

Explore the relationship between resistance and temperature
problem

Graphical Triangle

Age

14 to 16

Challenge level

What is the area of the triangle formed by these three lines?
problem

Four on the Road

Age

14 to 16

Challenge level

Four vehicles travel along a road one afternoon. Can you make sense of the graphs showing their motion?
problem

Close to Triangular

Age

14 to 16

Challenge level

Drawing a triangle is not always as easy as you might think!
problem

Spot the Difference

Age

16 to 18

Challenge level

If you plot these graphs they may look the same, but are they?
article
Coordinating Classroom Coordinates

This article describes a practical approach to enhance the teaching and learning of coordinates.
article
Spaces for Exploration

Alf Coles writes about how he tries to create 'spaces for exploration' for the students in his classrooms.