Play mode is meant for review of one or more chapters. It is best used when kid want to mix questions to review one or more chapters in the grade. 

Configuring Chapters in Play Mode 

1. Open "Splash Math" app on the iPad and go to the "HomeScreen"
2. Click on "Play"
3. Click on the "Settings" button on the left bottom of the screen
4. Turn chapters ON and OFF based on the requirement
5. Click "Done"

Algorithm of Showing Questions
The key components of the algorithm are:

1. Questions are mixed to ensure equal weight-age to all topics - 2 questions from each chapter
2. Questions presented take into account the previous learning/level of the kid on Splash Math
3. Questions are shown adaptively and ensures the difficulty level of the questions increase as the kid gets them right

Please contact us at support@studypadinc.com for more details.