Relative Dating of Geologic Materials part of Teacher Preparation:Resource Collections:Activities
This lessons allows students to constuct the basic principals used to understand relative geologic time and the skills used to construct the geologic time scale.

Density, Buoyancy and Convection part of Teacher Preparation:Resource Collections:Activities
This 3-hour hands-on guided-discovery lab activity teaches students the concepts of density, buoyancy, thermal expansion and convection.

The History of the Earth: Classroom Activity part of Teacher Preparation:Resource Collections:Activities
Students use events in an older adult's life to develop a timeline, which is then related to a scaled model of major events in the earth's history and the development of the geologic timescale.

Water Quality Testing in your Local Water Cycle part of Teacher Preparation:Resource Collections:Activities
Students analyze local water chemistry by identifying and collecting local water samples, deciding upon questions they want to answer about their local water sources, and then performing simple water quality tests on their samples.

Exploring the Solar System, the Galaxies, and the Universe with the Hubble Space Telescope part of Teacher Preparation:Resource Collections:Activities
The Hubble Telescope site (http://hubblesite.org) contains numerous teaching tools including videos, news articles about the solar system and the Universe, and games that introduce and reinforce astronomy and space science content and concepts. Teachers can design activities for multiple grade levels using the site as a foundation.

Ordeal by Check: An introductory activity about the Nature of Science part of Teacher Preparation:Resource Collections:Activities
This is an introductory activity about the Nature of Science (NOS) that can be used on the first day of a laboratory class. It is designed to show students how scientific knowledge develops and is general enough to use in any science course.

Destruction of the Rainforest and Atmospheric Oxygen part of Teacher Preparation:Resource Collections:Activities
Pre-service Midle School teachers devised an experiment to test an assertion that destruction of the Brazilian Rainforest would lead to a serious drop in atmospheric oxygen. The experiment proved to be a failure, but opened other avenues of science learning and had a positive impact on their confidence in teaching inquiry-based science.

Why do some things float while other things sink? part of Teacher Preparation:Resource Collections:Activities
Students investigate the concept of density through inquiry-based experiments and exploration.

Accessible Solar System on a String part of Teacher Preparation:Resource Collections:Activities
Explore the solar system using your senses.

Active Learning and Lasting Impacts: Reflective Writing in a Field-Based Geobotany Course for Teachers part of Teacher Preparation:Resource Collections:Activities
In this upper-division, week-long, residential field geobotany course for K-12 in-service and pre-service teachers, participants make observations and interpretations in both the field and lab every day. At the end of each day, participants write about their experiences, self-confidence, and perceived competence as an amateur scientist during a reflective writing exercise, for which instructors provide feedback each evening.