This Chemistry experiment investigates physical changes, solutions, supersaturated solutions, and states of matter.

MarketSim helps students understand the functioning of markets by having them become consumers and producers in a simulated economy. There are two versions, both implemented over the internet. Jeremy's market is a consumer barter market. Adam's market introduces firms and money. MarketSim received funding from the National Science Foundation. The simulation is most appropriate for economics principles courses. The principle developers are Tod S. Porter and Kriss Schueller at Youngstown State University.

This activity is a series of game-like lessons that assist the student in developing the logic skills needed to read mass spectrometer output and formulate the identity of an unknown molecule. As students endeavor to identify the unknown they must apply fundamental chemistry knowledge including formula mass, isotopes, periodic table, relative abundance, interpreting graphs, organic chemistry, ionization, bonding rules, and structural formulas. Based on an activity presented by Olaf Runquist, Professor, Hamline University.

A one page assignment that uses online tutorials to give students a first exposure to the components of a cell and membrane.

Students predict then calculate and graph profit-maximizing the price for an isolated, desert monopoly gas station.

This activity uses a cultural story to excite kinesthetic homework, nature journaling and daily adventure in a child's own back yard or kitchen flower pot.

This activity is a classroom lesson on how a slinky relates to sound waves and how sound waves relate to the human ear.

A one page activity that takes students to several websites related to the obesity epidemic. First they can calculate BMI, then learn about national trends in the rate of obesity and finally use a tutorial on insulin and diabetes.

This activity is used to introduce or reinforce in students the importance of differentiating between observations and interpretations and quantitative and qualitative observations during classroom experimentation or demonstrations

Students will use science skills of observing, describing and measuring in the context of Making Ice Cream. Students will understand the concept that physical properties can change.

This example is an in-class market simulation conducted with paper cards assigning each student a buyer or seller role and a reservation price. This example is appropriate for both upper and lower division courses. Open Outcry Market was developed by Barry P. Keating at the University of Notre Dame.

This quick-lab provides a concrete experience with crystal formation from saturated salt solutions that can help students make solubility problems more relevant to their experience.

While working in groups to facilitate peer tutoring, students manipulate a hands-on, physical model to better comprehend the dynamics of plate kinematics.

Population Explosion is a computer simulation which allows students to manipulate factors to see what happens over time to a population of sheep within an enclosed field. As the simulation runs, a graph shows the dynamic relationship between the sheep population size and their primary food resource, grass. Students can control factors such as initial number of sheep, grass regrowth rate, gain from food, and birthrate. Predation is represented by a “reaper” button which may also be controlled. The speed of the simulation can be set so that students can see more clearly what happens over time, or collect data more quickly, depending on how fast the simulation runs. Directions and a suggested simulation sequence are provided along with prompts so that students can pause and consider their results. A space within the simulation is provided for students to record observations and answers to the prompts. For each step in this suggested sequence, students take a snapshot of graphs they have created and store them in an album. At the end of the activity analysis questions help students connect the activity to wild populations. An optional extension exercise is also suggested.

Students survey class members to estimate the price elasticity of demand for a number of goods and services.

This activity is an interactive lecture demonstration format which can be used to teach the first lesson of electrostatics. Students will investigate conservation of charge, charge by contact, polarization of charge and charge by induction.

Introduction to Quantum Physics concepts with an activity demonstrating Heisenberg's Uncertainty Principle, wave/particle duality, Planck's Constant, de Broglie wavelength, and how Newton's Laws go right out the window on a quantum level.

This is an Interactive Lecture Demonstration for resolving force vectors using the suspended block demonstration (1J30.10).

The PhET Activities Database is a collection of resources for using PhET sims. It includes hundreds of lesson plans, homework assignments, labs, clicker questions, and more. Some activities have been created by the PhET team and some have been created by teachers.