The pictures for this work are actual photos of snowflakes, and they may be the photos that Snowflake Bentley took many years ago (we like to think they are anyway!).
O likes to sort the snowflakes into 2 groups before she starts matching them ("pointy" and "not pointy"). She looks at the tiny pictures of snowflakes through a magnifying glass in order to match them to their larger matches. This is more difficult than I anticipated!
I put star stickers on the backs of the cards to facilitate self-checking.