Discover that weather is the condition of the air outside, and learn the words we use to describe weather: sunny, cloudy, rainy, snowy, hot, and cool. Understand that the weather may change from day to day, but general trends in weather can be seen from season to season. Learn how the sun warms the Earth and other ways that weather forms and changes. See how tools like thermometers, weathervanes, and rain gauges measure and record these weather changes.

Teacher's guide on container insert.

Special features: Chapters ; Teacher's guide ; vocabulary.