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  1. period of cold weather 相關

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  2. Climate Activity - Weather vs. Climate Science

    The online or in-class science solution. Standards-based & partnered with the NSTA. Classroom videos made in partnership with the National Science Teaching Association.

    Supports NGSS · Educational & Fun · Used in 30k+ Schools · With Problems & Quizzes

    Types: Grades K-2 Science、Grades 3-5 Science、Grades 6-8 Science