Explore the forces at work when you try to push a filing cabinet. Create an applied force and see the resulting friction force and total force acting on the cabinet. Charts show the forces, position, velocity, and acceleration vs. time. View a Free Body Diagram of all the forces (including gravitational and normal forces).

According to Professor Bryan Caplan of George Mason University, many people suffer from "anti-foreign bias", believing that countries should prioritize goods made within their own borders and limit immigration to preserve jobs for citizens. In this video, Professor Caplan explains how trade and immigration actually increase wealth for everyone.

Forte Piano, by Teresa Jennings, is another in her series of songs that teach musical concepts. This fun music video, animated by Bill Belongia, really reinforces the concepts

Demonstration/Focus Lesson on how to understand fraction of a set by using manipulatives

In this video interview with Francine Christophe, a Holocaust survivor, you will learn about her experience as an eight-year-old Jewish girl at Bergen-Belsen camp. You'll be amazed to learn about her selfless act, and the great reward that she experiences years after being liberated.

Frida Kahlo, Frieda and Diego Rivera​, 1931, oil on canvas, 39-3/8 x 31 inches or 100.01 x 78.74 cm (San Francisco Museum of Modern Art) Speakers: Dr. Beth Harris and Dr. Steven Zucker. Painted in San Francisco during the artist's first trip outside of Mexico. She accompanied her husband Diego Rivera who was painting in the United States and would, at the end of the year, be the subject of a retrospecive at The Museum of Modern Art in New York. The banderole carried by the bird above the artist states: Here you see us, me, Frieda Kahlo​, with my beloved husband Diego Rivera, I painted these portraits in the beautiful city of San Francisco, California, for our friend Mr. Albert Bender, and it was the month of April of the year 1931. Note: Kahlo changed her German name, Frieda, to Frida. Created by Beth Harris and Steven Zucker.

This is the second lesson in the Human Anatomy & Physiology Fundamentals of Chemistry section. This video covers the atom, as well as the proton, neutron and electron.

Antoni Gaudí, Church of the Sagrada Família or Basílica i Temple Expiatori de la Sagrada Família Basilica, 1882- (consecrated 2010, but still under construction), Barcelona, Spain. Created by Beth Harris and Steven Zucker.

Children will love this light and bouncy tune, animated by Bill Belongia, as they learn about the quarter rest. The first time through the song you will see critters in various states of "resting". The second time through the song you see the tap dancing cow give his all. Side note, the cow dance was taken from a routine supplied by our own in house dance expert Liz Wagner.

Paul Andersen explains how the climate on the earth is affected by the amount of solar radiation and the greenhouse affect. The addition of anthropogenic greenhouse gases has led to global warming which is impacting humans on the planet. A discussion of the greenhouse effect and greenhouse gases (including water vapor, carbon dioxide, methane, nitrous oxide, and CFCs) is included. Countries have committed to reduce through both the Kyoto Protocol and the Paris Agreement.

This art history video discussion examines Grant Wood's "American Gothic", 1930, oil on beaver board, 78 x 65.3 cm / 30-3/4 x 25-3/4 inches (The Art Institute of Chicago).

This seminar will allow you to solve a system of linear equations by graphing. It will help you to understand what it means when the lines in a system of equations are parallel, and also what it means for the graphs to be the same line. You will learn how to visually identify information about the system of equations simply by examining the graphs of the lines that make up the system.StandardsCC.2.2.HS.D.10Represent, solve, and interpret equations/inequalities and systems of equations/inequalities algebraically and graphically.

This seminar will teach you how to identify the graph of an exponential function. You will learn how to identify the properties of the function that explain the shape of the graph. The seminar will also show you how to graph an exponential function that you are given. You will learn about the properties of the graphs of exponential functions and how they are related to the properties of exponents. You will be guided through examples of graphing using tables and also using properties of the functions themselves.StandardsCC.2.2.HS.D.7Create and graph equations or inequalities to describe numbers or relationships.