At the top is the fare table: one row for adults, one for kids, one column for 1 ride, one for the 5-ride pass.
First count how many adults and how many kids stand in the group.
Below each group it says how often every person rides.
Then work out both prices for each group (add up single rides, and the 5-ride pass) and take the smaller one. Adults and kids can end up choosing different passes.
Example
For parents
What does this exercise practice?
Fares practices counting a group and weighing two price columns against each other - a real decision rather than a plain sum, where adults and kids can end up with different answers.
Common pitfalls
It is tempting to only add up single rides and overlook the 5-ride pass. Both prices really need to be worked out and compared, even when the group is not taking exactly 5 rides.
How to practice at home
Use a real timetable board or bus app to show how a multi-ride pass becomes cheaper than single tickets once you ride often enough.