The textbook begins with a recap of coordinates before moving on to explanations, examples and exercises requiring students to plot points on straight lines. Students are asked to find connections between the x and y coordinates to begin to form equations of straight lines. The next section considers how to plot a straight line by generating coordinates given the equation of the straight line. There is detailed explanation of how to calculate the gradient of a straight line. The final sections explore how to calculate the equation of a straight line from the graph by calculating the gradient and the y intercept and how to find the equation of the line when only given two points through which the line passes.
The activity sheet contains four activities.
Chirping crickets explores the relationship between the temperature and the number of chirps made in one minute.
In the activity, Shoe size, students use the relationship between the length of the foot and the shoe size to create a ready reckoner.
Temperature conversion looks at how to convert between degrees Fahrenheit and degrees Celsius.
Mozart requires students to plot a graph based upon the age and compositions of Mozart.