Tree rings from North America give a continuous history of El Nino intensity over the last 1,100 years. Scholars learn how scientists use tree rings to create timelines demonstrating variations in weather patterns. The cumulative...

Students consider two sets of simulated fossils (caminalcules) that are provided as cutouts. They arrange them on two time scales. One set produces a visual example of gradualism, the other shows punctuated equilibria.

Pupils research the past eras in history including the Precambrian, Paleozoic, Mesozoic and the Cenozoic.  In this time scale lesson plan students take part in a lab that allows the pupils a better understanding of the timeline of...

In this time scale instructional activity, students create a time scale of Missouri and the earth using adding machine tape. The length of the tape represents the history of Missouri and the history of earth. Students identify the major...

Students study the rocks and fossils associated with the geologic landscape of Iowa. In this rocks and fossils lesson, students examine fossils that would be found in the Iowa landscape that show evidence of marine invertebrates such as...

The I-STOP law was designed to regulate the distribution and tracking of prescription drugs. After reading an article about its signing and implementation, middle and high schoolers work together to come up with their own ideas for an...

This PowerPoint provides a multiple choice and fill-in-the-blank format for reviewing vocabulary and related content following an "earth's crust" science unit. The information is concise and age-appropriate and the font and colors are...

Students plot events that happened years ago beginning with volcano activity.  In this investigative lesson students are introduced to the different eras and plot them on a map.