With your mouse, drag data points and their error bars, and watch the best-fit polynomial curve update instantly. You choose the type of fit: linear, quadratic, cubic, or quartic. The reduced chi-square statistic shows you when the fit is good. Or you can try to find the best fit by manually adjusting fit parameters.

DCACLab is an online circuit simulator designed for STEM education, allowing users to design, simulate, and troubleshoot electronic circuits in a rich, interactive environment. It features realistic components and tools like oscilloscopes and multimeters, making it easy to observe and manipulate circuit behavior in real-time. This platform enhances learning by bridging the gap between theoretical concepts and practical application.

This online interactive module of 10 pages or frames integrates textual information, 3D molecular models, interactive molecular simulations, and embedded assessment items to guide students in understanding the copying of DNA base sequences from translation to transcription into proteins within each cell. The module divides the exercises in to Day 1 and Day 2 time frames. Teachers can view student assessment responses by assigning the module within a class created within the Molecular Workbench application. This Java-based module must be downloaded to each computer.

Simulate the original experiment that proved that electrons can behave as waves. Watch electrons diffract off a crystal of atoms, interfering with themselves to create peaks and troughs of probability.

Since 2005, the "Past and Present" podcast from Colonial Williamsburg has taken you behind the scenes to meet interpreters, chefs, tradesmen, musicians, historians, curators, and more. We offer two versions of our podcast: one that's audio-only and one that includes a slideshow. In this episode: Hear the Declaration of Independence read in its entirety by renowned Thomas Jefferson interpreter Bill Barker.

Why do objects like wood float in water? Does it depend on size? Create a custom object to explore the effects of mass and volume on density. Can you discover the relationship? Use the scale to measure the mass of an object, then hold the object under water to measure its volume. Can you identify all the mystery objects?

Why do objects like wood float in water? Does it depend on size? Create a custom object to explore the effects of mass and volume on density. Can you discover the relationship? Use the scale to measure the mass of an object, then hold the object under water to measure its volume. Can you identify all the mystery objects?

This is a final lesson in a unit teaching German food and drink vocabulary and restaurant customs and vocabulary. Students will review the target vocabulary and create a story to present to the class and demonstrate their knowledge of the vocabulary and understanding of German restaurant customs.Utah World Languages Core Standards for ProficiencyLearning Indicator NH.IC.5I can interact with others in everyday situations.  c. I can order a meal.Learning Indicator NM.PS.2I can express my likes and dislikes using words, phrases, and memorized expressions.  c. I can state my favorite foods and drinks and those I don't like.Learning Indicator NM.PS.5I can present simple information about something I learned using words, phrases, and memorized expressions.  c. I can talk about animals, colors, foods, historical figures, or sports based on pictures or photos.Thumbnail photo "Woman buys fruits at a German food market in Munich Ludwigsvorstadt-Isarvorstadt" by verchmarco is licensed under CC BY 2.0.

Explore tunneling splitting in double well potentials. This classic problem describes many physical systems, including covalent bonds, Josephson junctions, and two-state systems such as spin 1/2 particles and ammonia molecules.

This interactive activity from the Adler Planetarium explains the reasons for the seasons. Featured is a game in which Earth must be properly placed in its orbit in order to send Max, the host, to different parts of the world during particular seasons.

How many calories are in your favorite foods? How much exercise would you have to do to burn off these calories? What is the relationship between calories and weight? Explore these issues by choosing diet and exercise and keeping an eye on your weight.

Play hockey with electric charges. Place charges on the ice, then hit start to try to get the puck in the goal. View the electric field. Trace the puck's motion. Make the game harder by placing walls in front of the goal. This is a clone of the popular simulation of the same name marketed by Physics Academic Software and written by Prof. Ruth Chabay of the Dept of Physics at North Carolina State University.

Play hockey with electric charges. Place charges on the ice, then hit start to try to get the puck in the goal. View the electric field. Trace the puck's motion. Make the game harder by placing walls in front of the goal. This is a clone of the popular simulation of the same name marketed by Physics Academic Software and written by Prof. Ruth Chabay of the Dept of Physics at North Carolina State University.

Play ball! Add charges to the Field of Dreams and see how they react to the electric field. Turn on a background electric field and adjust the direction and magnitude. (Kevin Costner not included).

How good are you at troubleshooting engine management systems? Take the challenge and develop your skills to get high score in a game that allows you to diagnose and repair failures in three progressive levels of difficulty.

Learn about conservation of energy with a skater dude! Build tracks, ramps and jumps for the skater and view the kinetic energy, potential energy and friction as he moves. You can also take the skater to different planets or even space!

Explore what it means for a mathematical statement to be balanced or unbalanced by interacting with objects on a balance. Discover the rules for keeping it balanced. Collect stars by playing the game!

Learn about graphing polynomials. The shape of the curve changes as the constants are adjusted. View the curves for the individual terms (e.g. y=bx ) to see how they add to generate the polynomial curve.

Learn about graphing polynomials. The shape of the curve changes as the constants are adjusted. View the curves for the individual terms (e.g. y=bx ) to see how they add to generate the polynomial curve.

Explore size estimation in one, two and three dimensions! Multiple levels of difficulty allow for progressive skill improvement.