Key concepts: Dynamically draw a triangle to calculate slope of a line segment. Introduce geometry link in an eActivity. Extend to length of the line segment formula.
Apps: eActivity, Geometry
Activity
Solution
YouTube video demo Particularly useful for first time users of Geometry app
Category Archives: Linear functions and coordinate geometry
Midpoint
Key concepts: Visualise the midpoint of a line segment and deduce a formula for its coordinates
Apps: Geometry
Activity
Solution
YouTube video demo Particularly useful for first time users of Geometry app
Slope intercept form: equation of a line
Key concepts: Explore the effects of changing parameters in the equation of a straight line
using dynamic graphing. Use sliders and animate variation in the parameter, i.e. gradient and y-intercept.
Apps: Graph&Table
Activity
Solution
YouTube video demo
Graphs of linear functions
Key concepts: Familiarity with Graph&Table app. The activity uses a problem context to develop the linear rule and then control the table of values displayed, the Graph window and introduce G-solve
Apps: Graph&Table
Activity
Solution
YouTube video demo