• PDF preview of the Map Activity from Southwestern Investi-gator
    After reading the Southwestern Investi-gator, try out a mapping activity. Can you match each photo with its map? A graphic…

    Map Activity – Southwestern United States Investi-gator

  • The cover of
    Tropical forests are sometimes cut down so that humans can use the trees for wood and other products. Then, the cleared land is made into…

    It’s a Gas! The Exchange of Gases Between the Soil and the Atmosphere