There are 5 games in this set. They are labeled as set 1-5 and they are color-coded as well. The 5 topics are standard measurement, time, calendar, perimeter/area and metric.
These games are more challenging than the usual I Have, Who Has games so that is why I have them listed for grades 3 and up.
Depending on your class, you might want to have some tools available for them to use to figure out the answers. For example provide a measurement chart showing equivalent measures for the standard measurement set or individual clocks for use with the time set.
The directions are the same for these as for most traditional I Have games.
Preparation is minimal: just print and cut the cards out. It's as simple as that - although I would recommend that you copy onto cardstock or laminate for durability.