This problem challenges children to make sense of information presented by applying their knowledge of number properties and to make and test conjectures based on that information. Students try to determine the secret number property or rule by examining the numbers that fit the rule and the numbers that don't fit the rule. The Teachers' Notes page offers rationale, suggestions for implementation, discussion questions, ideas for extension and support and a link to an interactivity of the game.

This assignment is great for the days the students need something to do at home on a digital learning day!