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- Welcome Books are reviewed by reading consultants before publication.- Includes glossary and index.- Glossary words are bolded throughout the book for easy identification and the glossary includes a pronunciation guide to help emergent readers with these new words.Grades K-4 National Science Standards- Earth and Space Science: IV- Weather changes from day to day and over the seasons, and there are ways by which weather can be measured- Science and Technology: V- Tools help scientists make better observations- Science As Inquiry: I- Scientists make findings public- Employ simple equipment to gather data