Work together as a class to help the sheep get back in place.
Set up a 100's board (blank or pre-filled depending on grade)
Hide sheep throughout school and have students work together to find them and put them back in order on the 100's board.
This can be done in small groups or as a whole class. It is a fun 100th day activity that is directly related to CCSS standards.
Students can come together at the end of the activity to talk about the strategies they used to place the sheep in the correct place.