Cache-cache proposes to observe the sequence of numbers from 1 to 10 and to find the missing number.

- Level 1: observe the sequence to find the missing number, then click on the number that had disappeared.
- Level 2: random arrangement of numbers; find the missing number (the numbers can be moved if needed)

- Adjustable maximum number: choose where the sequence ends (3 to 10).
- Display option: numbers / fingers / dominoes / playing cards

This application is part of the cycle 1 mathematics programs: discovering numbers and their uses
End-of-cycle expectation(s): Begin to position numbers relative to each other and complete an incomplete digital band (the numbers in play are less than or equal to 10).