On Thursday, December 6th 2018, 30 children from the big group “Piticot” performed a math activity outdoor where they made gatherings and decreases using natural materials like : pine cones, nuts, chestnuts. Their teachers made a numerical scale with the help of children. All the materials used in the mathematical activity turned into Christmas ornaments with which we decorated the pine from the yard of the kindergarten. The children were very happy because Santa Claus can see by far the pine decorated and so he will find our kindergarten easier to bring them gifts.