Explore stretching just a single strand of DNA using optical tweezers or fluid flow. Experiment with the forces involved and measure the relationship between the stretched DNA length and the force required to keep it stretched. Is DNA more like a rope or like a spring?

What happens when sugar and salt are added to water? Pour in sugar, shake in salt, and evaporate water to see the effects on concentration and conductivity. Zoom in to see how different sugar and salt compounds dissolve. Zoom in again to explore the role of water.

Explore what it means for a mathematical statement to be balanced or unbalanced by interacting with integers and variables on a balance. Find multiple ways to balance x and y to build a system of equations.

Investigate how torque causes an object to rotate. Discover the relationships between angular acceleration, moment of inertia, angular momentum and torque.

Investigate how torque causes an object to rotate. Discover the relationships between angular acceleration, moment of inertia, angular momentum and torque.

Explore pressure under and above water. See how pressure changes as you change fluids, gravity, container shapes, and volume.

Lecture notes for risk and valuation models for financial risk management , part 1

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 lesson uses a matching game to build students' understanding and familiarity with different terms used in the world of resiliency planning.

In this lesson, students will apply what they know about how to separate a mixture by designing a wastewater treatment facility that effectively removes contaminants.

Make waves with a dripping faucet, audio speaker, or laser! Add a second source or a pair of slits to create an interference pattern.

Watch a string vibrate in slow motion. Wiggle the end of the string and make waves, or adjust the frequency and amplitude of an oscillator. Adjust the damping and tension. The end can be fixed, loose, or open.

Watch a string vibrate in slow motion. Wiggle the end of the string and make waves, or adjust the frequency and amplitude of an oscillator. Adjust the damping and tension. The end can be fixed, loose, or open.

In this lesson, students develop a fundamental understanding of NASA’s Solar Dynamic Observatory (SDO) and the Sun’s structure and function.

This comic book was developed with the Stanford Solar Center as part of their comic series Tales from Stanford Solar and explores questions like: What color is the Sun? and How do we study the stars?

In this lesson, students utilize case studies to learn about the ways climate change is currently impacting people and other living things around the world.

In this lesson, students explore reasons why temperatures in particular Colorado cities are rising.

In this lesson, students will first participate in a chalk talk to elicit initial ideas about climate and Antarctica and the types of data scientists collect. Next, they will explore images of Antarctica and make initial noticings and wonderings about what they’re seeing. Students will be introduced to important vocabulary through matching terms to components or features of a satellite image. Finally, students will synthesize their initial ideas about how satellite imagery can help us understand climate change in Antarctica. This is the first lesson of a five-part curriculum about Antarctic physical environments and ecosystems.

This lesson explores climate data at local, national, and global levels to determine that temperatures are changing all over the world, and that there are certain locations where temperatures are warming faster than the global average.