There are many websites offering Christmas-themed worksheets, colouring pages, and free printables, but it is a little more difficult to find some seasonal activities that are not just pencil-to-paper tasks. Here are a few of them:

http://mathwire.com/seasonal/winter05.html

This is a collection of activities which includes Koch Snowflake, Penguin Math, Snowflake Activities, Snowman Problem Solving, Literature Connections (activities based on *The Fattest, Tallest, Biggest Snowman Ever* by Bettina Ling), Winter Glyphs, Winter Data Collection, Gingerbread Math Activities, Winter Coordinate Graphing, Holiday Problem Solving and samples of student work. These activities are most suitable for elementary students.

http://www.makinglearningfun.com/themepages/ChristmasMathIdeas.htm

These counting, sorting, and matching activities are designed for early childhood education settings so would be suitable for Kindergarten students.

https://www.teacherspayteachers.com/Product/Christmas-Free-Christmas-Math-Games-976441

These free 2-player games could be used as part of a math centre in a primary classroom or for home practice. Included are: Addition Game, Subtraction Game, Multiplication Game, Division Game.

http://www.educationworld.com/a_curr/mathchat/mathchat015.shtml

These integrated activities are best suited for elementary students, but could be adapted for older students. Included are snowflake math, estimation, counting, measuring, winter glyphs, and data collection & analysis.