Using Lab Measurements to determine the power output of a solar module and the economic feasibility of photovoltaic panels

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Students are challenged to a Sherlock Holmes-style mystery in which they construct their own decay curves of melting ice to determine time-zero.

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This activity provides a complete curriculum for teaching the photoelectric effect using the PhET Photoelectric Effect simulation in a large-lecture modern physics course. It includes links to powerpoint slides for two to three 50-minute lectures using Peer Instruction with clickers, and one homework assignment suitable for an online homework system. Research has demonstrated that students in classes using this curriculum have a better understanding of the photoelectric effect than students in classes using traditional instruction supplemented by a computerized tutor.

Labs and tutorials that use equipment such as circuits can be modified to use PhET simulations instead. Research shows that substituting the PhET Circuit Construction Kit simulation for real equipment in a variety of contexts leads to improved conceptual learning in the best cases, and the same conceptual learning in the worst cases. There are many advantages to using PhET simulations over real equipment: They are easy to use, so students can play around and modify the experiment quickly and easily without fear of breaking the equipment. They have productive constraints to focus attention on the most important aspects of the experiment (e.g. bulb brightness and current flow) rather than on irrelevant aspects (e.g. wire color and length). Finally, if real equipment is not available, PhET simulations provide the opportunity to do multiple experiments with a single piece of equipment: a computer.

These labs provide examples of using very open-ended questions to guide students in exploring a simulation and designing their own experiments. These labs can lead to a high level of quantitative thinking about data analysis.

Explore how the charging and discharging of a Van de Graaff generator occurs and changes in potential energy.

Learn how to add vectors. Drag vectors onto a graph, change their length and angle, and sum them together. The magnitude, angle, and components of each vector can be displayed in several formats.

Learn how to add vectors. Drag vectors onto a graph, change their length and angle, and sum them together. The magnitude, angle, and components of each vector can be displayed in several formats.

This web page is an interactive physics problem on vector addition. The page explains the concept of breaking a vector into components and adding them together, and works through an example problem. The attached Java applet visualizes the problem. This is part of a collection of similar simulation-based student activities.

Compare lifting a bowling ball directly (one small person) to lifting a bowling ball at an angle with two people holding the ends of a rope and the ball hooked to the middle of the rope.

Explore how natural convection might look in a whole house, with or without a ceiling. Consider the following questions based on your experience of rooms you have been in. Does a low ceiling make a room feel warmer in a poorly insulated house? Would it be hard to heat the area we use (such as sofa height) of a living room with a high "cathedral" ceiling?

This is a virtual field trip to Iceland's Laki Fissure, which explores the 1783 eruption as a type example of a large historical lava flow eruption that had a significant impact on the local human population and the global environment. Students explore the climate impacts of the eruption, as well as the different types of volcanic deposits it produced. Students use their observations to develop hypotheses about past and future volcanic hazards associated with the volcano.

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This is a virtual field trip to Italy's Mt. Vesuvius, which explores the 79AD eruption of the volcano. Students explore the excavated cities of Pompeii and Herculaneum, as well as the different types of volcanic deposits found to have buried those cities. Students use their observations to develop hypotheses about past and future volcanic hazards associated with the volcano.

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In Exercise 1, students are given modified data published by Cole & Friberg, 1989, Stratigraphy and Sedimentation of the Book Cliffs, Utah. They follow instructions to construct a measured section. In Exercise 2, students work either with polarized microscopic photographs linked online to specific units in their measured section or directly with the thin-sections. Grain characteristics are measured and observed. In Exercise 3, facies units are determined on the basis of bedding, sedimentary structures, trace and macrofossil evidence. An interpreted facies overlay of their first graphically generated measured section. A table is also generated to support their facies determinations. In Exercise 4, correlations are made using an east-west transect of several stratigraphic sections. Shallowing-upward cycles and exposure and flooding surfaces are marked; lateral facies correlations are made.

(Note: this resource was added to OER Commons as part of a batch upload of over 2,200 records. If you notice an issue with the quality of the metadata, please let us know by using the 'report' button and we will flag it for consideration.)

The concept of water activity is important to food preservation. When water activity is less than 0.6, almost all microbes, including bacteria, molds, and yeasts, stop growing. Vegetables are usually dried even further, to water activity of 0.3 or 0.2, for quality and storage. Virtual Labs – Controlling Water Activity in Food explores a traditional method of preserving corn by drying. In this virtual laboratory, learners test water activity levels of dried corn and explore how they change under three different storage environments. The interactive animation guides users through the theory and practice of sampling a food product, using a water activity meter, and setting up replicates, to build familiarity with concepts and procedures used in real food science labs. Before beginning this lab, it may be useful to complete Virtual Labs – Understanding Water Activity.

Model how electric fields change due to the number and placement of charged objects.

Vital Ice STEM Kit. The Natural Sciences Education & Outreach Center collaborates with CSU faculty, National Parks and citizen science programs to translate their current scientific research into unique STEM experiences for students in the form of Educational Kits that can be checked out. Each kit contains just about all of the materials needed (minus common things like water and paper towels) to explore some really interesting scientific research topics.The kits are available for teachers and informal educators in Colorado to check out for a duration of a week by submitting either a local pickup form or a delivery form available at the linked website. This kit is provided free for educational use. This Kit is available in Spanish. Global Surface Temperatures: https://scratch.mit.edu/projects/283054052/

Atmospheric scientists use computer models to forecast the position of a moving volcanic cloud, and remote sensing can identify its components, including gases and aerosols. This resource provides ideas for classroom investigation of these topics, and directions for a demonstration of light scattering by aerosols. The lesson ideas are from PUMAS - Practical Uses of Math and Science - a collection of brief examples created by scientists and engineers showing how math and science topics taught in K-12 classes have real world applications.

Investigate the relationship between the volume of a gas and the pressure it exerts on its container. This relationship is commonly known as Boyle's Law. The pressure of a gas tends to decrease as the volume of the gas increases.