Chapter Test: From the very beginning of the unit, I would rework some of the problems in Chapter Practice Review. (ckinged.com)
At the beginning of a unit of study, in the first class period where the unit is introduced, have students spend 12 - 15 minutes working in pairs on a device to look up all of the information related to the unit. (edutopia.org)
Teachers could use it at the beginning of units on astronomy, geometry, perspective or measurement: (edutopia.org)