This is a fiendishly difficult symmetry worksheet! You might want to start the children on some of the others in the set, and work up to this one. Mirror the lines on the left of the line of symmetry over to the right and you will have a perfect, symmetrical snowflake!
Snowflake Symmetry Worksheet
Draw the second half of this snowflake, using the principles of symmetry to fill in the missing parts of the grid.