This worksheet, called 'Weather Worksheet: Billy and Maria Visit the National Weather Service', was originally presented by National Weather Service and is also available as a download at their website. This is a 12-page document telling the story about two children - Billy and Maria - who visited the National Weather Service and what they saw there. It is a good way to introduce the topic-related terminology, instruments used in weather forecasting and symbols used in weather maps. Students are encouraged to think and discuss how they should dress for different weather types, depending on the forecast. The worksheet is complimented by brief abstracts with some facts about the National Oceanic and Atmospheric Administration, National Weather Service and National Severe Storms Laboratory. The abstracts also contain some information on the organizations' missions and responsibilities. The last page of the worksheet is a reference sheet of 'Billy and Maria' series titles.