This worksheet, called 'Weather Worksheet: Billy and Maria Learn About Winter Weather - Part 2', with a sub-title 'Billy, Maria and the Snowflake', was originally provided by National Weather Service, in cooperation with National Severe Storms Laboratory and National Oceanic and Atmospheric Administration. This 13-pager belongs to 'Billy and Maria' series, and it presents the second out of three chapters dedicated to winter weather. The second part is telling a story on how Billy and Maria were outside playing and noticed all snowflakes looked differently. Neighbour John has given kids a lesson on how snowflakes are formed and why they look the way they do, as well as he advised them to go inside and stay warm, to avoid frostbite (explaining what it is).
As a standard feature of the series, this worksheet provides some facts about the National Weather Service, National Oceanic and Atmospheric Administration and National Severe Storms Laboratory, as well as their responsibilities and missions. The last page of the booklet is traditionally a list of chapters included into the 'Billy and Maria' series.