Sally Salivates Seashells by the Seashore- Ocean Acidification and the Effect on Sea Shells
Rus Higley, Highline Community College, and Vanessa Hunt, Central Washington University
In this lesson we review "Acids and Bases" taught in a previous lesson and, through a scientific method, will look at the impact of an acid on different types of shells. Students will reinforce previous learning of scientific principles including acids/basis and will develop a real experiment using the scientific method.

Geologic Time Scale CogSketch geoscience worksheet
Bridget Garnier
Sketching activity that uses a sketch-understanding program, CogSketch. This worksheet has students build the geologic time scale by adding events on increasing larger scales, from 1 million years to 4.56 billion ...

Introduction to Science - Penny Histograms
Kathryn, Green River Community College; Kathryn Hoppe, Green River Community College
Overview: This exercise serves as an introduction to histograms. Students are given a short introduction to histograms in lecture and reading. They are then broken up into different groups of 3-5 students. Students ...

How Many Plants Make a Future? The Carbon Dioxide Challenge
Rus Higley, Highline Community College Marine Science and Technology Center, Vanessa Hunt and Timothy Sorey, Central Washington University
This activity focuses on the role of photosynthesis in a sustainable future. Students explore the effect of photosynthesis and respiration in a 'closed systems' containing plankton, marine plants, and fish. By calculating carbon dioxide uptake and production in these systems, they predict a plant: animal ratio sufficient to maintain a system in carbon dioxide 'balance' for one hour.

Incomprehensibly Small and Incomprehensibly Large
Vince Cronin, Baylor University
Students are asked to consider the length scales of the universe, from smallest to largest. Using a logarithmic scale in cm units, various distances are resolved ranging from the smallest meaningful length in ...