Curated OER
How Trees Contribute to the Water Cycle
In this water cycle instructional activity, 3rd graders conduct an experiment where they observe and calculate how water transpires in different types of trees. Students engage in a class discussion and use Venn Diagrams to compare...
Curated OER
The No Zone of Ozone
Students explore the causes and effects of the Earth's ozone holes through discussion and an interactive simulation. Using gumdrops and toothpicks, they conduct a large-group, interactive ozone depletion model.
CK-12 Foundation
Ck 12: Elem Math: Identifying and Naming 3 D Figures
[Free Registration/Login may be required to access all resource tools.] The video briefly shows and describes a cube, rectangular prism, triangular prism, and a cylinder and then determines what 3D figure is shown through process of...
CK-12 Foundation
Ck 12: Elem Math: Identifying Rectangles Squares Circles and Triangles
[Free Registration/Login may be required to access all resource tools.] The video briefly shows and describes a triangle, circle, rectangle, and square and uses process of elimination to determine the given shape. The video is followed...