Activity 1: Instructional Game. Estimated duration: 7 min
Fast Aqua Door
Deep within an unstable underwater cavern lies an ancient door, sealed by an odd mechanism protecting uncountable treasures. Dive down and open it by identifying the missing number shown on the mechanism and completing the expression. However, if a would be adventurer takes too long, the mechanism will cause the cavern to collapse preventing anyone from reaching the treasure.
Ratings
Teacher Ratings (8) 4.0 stars.
Student Ratings (2135) 3.7 stars.
