Clay Koch Snowflake

Step 3 Stack

Stack these as in the original sketch into a two parallelograms surrounding a different colored triangle. Then make a twice as wide (still equilateral) triangle and stack it on top, making a 3x base width triangle. If you made the smaller triangles from a predefined source (those playdough squeezers, for instance) you could also make five of the original size and make the big one that way.