Symmetry does not only occur in shapes. This activity challenges students to consider the symmetry of a class's line order using girls and boys as the two pieces of the puzzle. They are asked to find out how many different ways one class can be placed in symmetrical line order, as well as how that changes as new students join the class.
There is also an extension that asks students to consider how it works for their class (Heads up! This does not work if there are an odd number of each, boys and girls.)
There are three pdf files:
1. Worksheet in two pages.
2. Worksheet in three pages (just provides more space for work.)
3. Extension worksheet using your class data.
Possibilities for the activities include:
- partner/group work
- acting out their work
- creating a chart of the class's findings for the extension
- discussion around ways students/partners/groups chose to organize their work