I love this snowflake geometry project from the STEM Laboratory.
Use her printables for a variety of shapes, read books or websites about how snowflakes form (NOAA has a pretty great rundown of the science behind snowflakes) and then have kids build their own snowflakes.
You can talk about symmetry as you do this, or make part of a design and have the kids repeat it to form a full snowflake.
When their designs are done you can count the number of each kind of shape that was used, and you’ll also have some great winter art to hang at home or in the classroom.
This is a great activity to do when reading books about snow, too, and even little kids will have fun making snowflakes with the shapes.
[Photo via the STEM Laboratory.]