In this paper and pencil exercise, students create graphs that describe the effect of a series of experiments using Daisy World, an energy balance model, that can be used to demonstrate concepts of equilibrium, homeostatis, and positive and negative feedbacks. Internet access and exploration with the actual Daisy World model is ideal, but not required. The resource is Activity 6 of the learning module, Global Balance, part of the lesson series Potential Impacts of Climate Variability and Change.

This article, part of Biodiversity Counts, examines site preservation, focusing on a new national park in El Salvador. The article discusses the questions faced as part of the decision-making process, the formation of an advisory committee in the early 1990s to study the park and make recommendations for how it should be managed, the committee's recommendations, and a description of those changes that are in the works, such as opening a portion of the park to the public.

Use a virtual scanning tunneling microscope (STM) to observe electron behavior in an atomic-scale world. Walk through the principles of this technology step-by-step. First learn how the STM works. Then try it yourself! Use a virtual STM to manipulate individual atoms by scanning for, picking up, and moving electrons. Finally, explore the advantages and disadvantages of the two modes of an STM: the constant-height mode and the constant-current mode.

An active problem-based assignment that uses the Genbank database to teach the basics of molecular biology and molecular evolution

An activity/lab where students determine the changes in 100-year flood determinations for 2 streams over time.

(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.)

This activity introduces students to using real-time data about earthquakes to make decisions.

(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.)

This article, part of Biodiversity Counts, reports on the thought process of selecting a research site. The article has five tips from working scientists.

Semiconductors are the materials that make modern electronics work. Learn about the basic properties of intrinsic and extrinsic or 'doped' semiconductors with several visualizations. Turn a silicon crystal into an insulator or a conductor, create a depletion region between semiconductors, and explore probability waves of an electron in this interactive activity.

The Sentinel-2 10m Land Use/Land Cover time-series is live on ArcGIS Living Atlas of the World! This map provides an annual assessment of yearly global land cover from 2017–2021, in 9 different land cover classes, at 10-meter resolution. The new time-series animates the natural and anthropogenic processes that continue to transform our planet's landscapes and resources, giving researchers, planners, and the GIS community the information they need to make critical future decisions.

A set of maps, images and .kmz files for use in lectures and discussions on forearc serpentine volcanism in the Mariana subduction system.

(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.)

This Excel spreadsheet assignment brings students step-by-step through the process of solving and analyzing a Keynesian cross model. It is most appropriate for principles-level macroeconomics courses.

The children will learn the different types of severe weather and how to protect themselves from it. They will also learn about different storm chasers and what they do to help us learn more about weather. This lesson is for a 2nd grade classroom.

Students will determine whether the amount of air in a balloon changes the distance it will travel on a fishing line. They will collect data from multiple tests and then create a graph to visualize the variation.

This activity has students use Fathom to test the correlation between attendance and ballpark capacity of major league baseball teams by taking a sample of actual data and scrambling one of the variables to see how the correlation behaves when the variables are not related. After displaying the distribution of correlations for many simulated samples, students find an approximate p-value based on the number of simulations that exceed the actual correlation.

A java applet that simulates the sampling distribution of the mean. It allows students to explore the effect of sample size.

In this hands-on activity, students learn about the different realms of the Universe and explore their sizes and relative scales. They will be guided through a process that uncovers the immense sizes of the Sun, Solar System, Solar Neighborhood, Milky Way, Local Group, Supercluster, and the observable Universe. The full version of this activity involves students doing simple math computations, however it can also be done without the math. There are some inexpensive materials involved, as well as a powerpoint presentation. It is intended for grades 8-12, but can be adapted down for lower grade levels.

In this hands-on activity, learners begin by estimating the size of each planet in our Solar System and Pluto and making each out of playdough or a similar material. Then, learners follow specific instructions to divide a mass of playdough into the size of each planet and Pluto and compare the actual modeled sizes to the students' own predictions. This activity requires a large amount of playdough material per group of learners. Three pounds is the minimum amount required for each group.

The following overview is from the Smithsonian Open Access web site:
Welcome to Smithsonian Open Access, where you can download, share, and reuse millions of the Smithsonian’s images—right now, without asking. With new platforms and tools, you have easier access to more than 3 million 2D and 3D digital items from our collections—with many more to come. This includes images and data from across the Smithsonian’s 19 museums, nine research centers, libraries, archives, and the National Zoo.
...We have released these images and data into the public domain as Creative Commons Zero (CC0), meaning you can use, transform, and share our open access assets without asking permission from the Smithsonian.

Rashtrasant Tukdoji Maharaj was done the Social awareness using music by Khanjeri Bhajan.