Curated OER
Detectives in the Landscape
Fourth graders explore landscapes. In this landscape lesson, 4th graders investigate different elements of landscapes. Students design a visual presentation using photographs taken during a nature walk.
Science Education Resource Center at Carleton College
Serc: Mn Step: Relative Dating Using "The Block"
This lesson involves an innovative strategy for introducing the concept of relative dating using a block of wood that has been painted, damaged, and nailed. The task for students is to analyze the order in which these events happened and...
Science Education Resource Center at Carleton College
Serc: Layer Cake Geology
Using a cake analogy, this activity teaches concepts such as: geologic time, rock layers, fossils, Law of Superposition, and relative dating. Activity can be modified to grade level and appropriate content for students,
CK-12 Foundation
Ck 12: Fourth Grade Science: Earth Science: Relative Ages of Rocks
[Free Registration/Login may be required to access all resource tools.] Looks at how stratigraphy can be used to determine the relative ages of rocks, how unconformities occur, ways to match rock layers in different areas, and how...
Smithsonian Institution
National Museum of Natural History: Paleobiology: Absolute Dating
An explanation of radiometric or absolute dating of geological formations based on using the half-life of radioactive elements to figure out how old given rock layers are. A link on the left provides information about relative dating as...
CK-12 Foundation
Ck 12: Earth Science: Correlation Using Relative Ages
[Free Registration/Login may be required to access all resource tools.] How rock layers in different locations can be connected to make pictures of a region's geology.
CK-12 Foundation
Ck 12: Earth Science: Correlation Using Relative Ages
[Free Registration/Login may be required to access all resource tools.] How rock layers in different locations can be connected to make pictures of a region's geology.
ClassFlow
Class Flow: Rock Record Relative Dating
[Free Registration/Login Required] This flipchart presents information about how the earth was formed. It discusses methods of dating the layers of the earth's surface. Assessment questions are included.
Georgia Department of Education
Ga Virtual Learning: Historical Geology
In this interactive tutorial you will explore how geologists use clues in rocks to determine the order in which rocks formed. Learn how principles of radioactivity are used to assign actual ages to rocks. Students will explore fossils...
Utah Education Network
Uen: Fossil Inferences
Arrange fossil pictures in sequence from oldest to youngest.
CK-12 Foundation
Ck 12: Life Science: 4.4 Fossils
Understand fossils and the fossil record as it relates to Earth's history.
US Geological Survey
U.s. Geological Survey: Geologic Time
A discussion of geologic time, how scientists use the concept, and how they have determined its span.