I just saw these on Twitter from last Friday (1/28/17).
Our 2nd grade scientists observed first-hand how wind and water erode soil. pic.twitter.com/0lkc8h0nz6
— HalleyES Grade 2 (@HalleyESGrade2) January 28, 2017
Our scientists created a model of weathering by breaking up "rocks" the way wind, water, temperature, ice, and plants do. pic.twitter.com/IpxRGfPfKC
— HalleyES Grade 2 (@HalleyESGrade2) January 28, 2017