Grade: 4th

28 Feb 2021

Fossils

August-June

Take a look at the history of Ohio’s land through its ancient ancestors.  Learn about a distant past where Trilobites ruled the warm waters of the Ordovician sea. Investigate how fossils are formed and what was left behind for us to find here at Greenacres.

Standards:

  • LS Grade 4: Fossils can be compared to one another and to present day organisms according to their similarities and differences.

Vocabulary:

erosion, deposition, sediment, Ordovician fossils, glacial erratic, limestone, shale

28 Feb 2021

Erosion and Weathering

August-June

In Ohio, our rivers and streams tell a story. Changes in the landscape are caused by weathering of rock and soil, and by transportation and deposition of sediments. Students will explore the process of erosion and look for signs of weathering here at Greenacres.

Standards:

  • ESS Grade 4: Earth’s surface has specific characteristics and landforms that can be identified.
  • ESS Grade 4: The surface of Earth changes due to weathering.
  • ESS Grade 4: The surface of Earth changes due to erosion and deposition.

Vocabulary:

erosion, weathering, deposition, sediment, landform