To investigate a linear relationship by gathering and graphing data. Discuss ways in which this problem may be solved. 2 Gathering data Students work in groups to construct a graph relating point size and height in millimetres. Each group may choose a different font. To enlarge the smaller letters, students may use a magnifying glass or photocopy the letter next to a millimetre scale.
Students measure each other's height.
Sstudents then use the equation to calculate their own point size. Space , an interactive CD-ROM for upper primary and secondary students. Maths Task Centre Kit for primary and secondary students. Chance and Data , a set of books, computer disks and videos for primary and secondary students. Return to Secondary Lesson Plans Index.