Online resources can be very useful for retrieval practice as they allow for quiz results to be recorded and fed back to students quickly.
They can be used as starters in order to review knowledge from previous lessons, within a lesson as a checkpoint in order to assess understanding and move forward, or as a plenary to assess understanding from the lesson to inform future planning.
Resources
Quizlet can be used for individual students or as a whole class
Quizziz is fun and engaging for students. It also gives an overview of students answers.
Kahoot can be used in different ways for whole class quizzes.