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).

This animation describes the process of cartilage formation starting with separation from the mesenchymal tissue to the formation of an isogenous cell group via mitosis.

Instructional video on the formation of catenane after replication of circular bacterial chromosome.

Although textbooks describe this process and show illustrations, it is difficult to grasp without seeing a live demonstration.

Created for Biology 41 General Genetics at Tufts University.

Based on knowledge of the unit Circles, students see how sinusoids (Sine and coSine waves) get their shapes.

Explore the potential and kinetic energy as two atoms form a covalent bond.

Explore the balance of forces and electron distribution as two atoms are moved closer and further apart.

Learn how to make waves of all different shapes by adding up sines or cosines. Make waves in space and time and measure their wavelengths and periods. See how changing the amplitudes of different harmonics changes the waves. Compare different mathematical expressions for your waves.

Learn how to make waves of all different shapes by adding up sines or cosines. Make waves in space and time and measure their wavelengths and periods. See how changing the amplitudes of different harmonics changes the waves. Compare different mathematical expressions for your waves.

Match shapes and numbers to earn stars in this fractions game. Challenge yourself on any level you like. Try to collect lots of stars! The main topics of this interactive simulation include fractions, equivalent fractions, and mixed numbers.

Match shapes and numbers to earn stars in this fractions game. Challenge yourself on any level you like. Try to collect lots of stars! The main topics of this interactive simulation include fractions, equivalent fractions, and mixed numbers.

Explore fractions while you help yourself to 1/3 of a chocolate cake and wash it down with 1/2 a glass of orange juice! Create your own fractions using fun interactive objects. Match shapes and numbers to earn stars in the fractions games. Challenge yourself on any level you like. Try to collect lots of stars!

Explore fractions while you help yourself to 1/3 of a chocolate cake and wash it down with 1/2 a glass of orange juice! Create your own fractions using fun interactive objects. Match shapes and numbers to earn stars in the fractions games. Challenge yourself on any level you like. Try to collect lots of stars!

Explore fractions while you help yourself to 1 and 1/2 chocolate cakes and wash it down with 1/3 a glass of water! Create your own fractions using fun interactive objects. Match shapes and numbers to earn stars in the mixed number game. Challenge yourself on any level you like. Try to collect lots of stars!

This activity has students make small cuts in processed cheese food and then apply shear stress perpendicular or parallel to the cuts to see what sort of fracturing will occur.

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Fractured Union is a 60-minute video that examines the complex and often tumultuous relationships between our founding fathers. Historical interpreters — portraying Washington, Jefferson, Madison, and Mason — offer students, in grades 9-12, a close look at the presidents engaged in heated discussions. Commentaries from leading historians show why the first presidents’ perspectives led to heated debates. Our guest historians include: Stuart Leibiger — Associate Professor and Department of History Chairman at La Salle University and author of Founding Friendship: George Washington, James Madison, and the Creation of the American Republic; Peter Henriques — Associate Professor Emeritus of History at George Mason University and a member of the editorial board for the George Washington Papers and of the Mount Vernon committee of George Washington Scholars; Ed Lengal — Associate Professor of History at the University of Virginia and Associate Editor of “The Papers of George Washington”; and William Ferraro — Assistant Editor of “The Papers of George Washington”.

This website consists of a series of 3D simulations on engineering technology topics. Developed by and for the Eastern Iowa Community Colleges' Engineering Technology programs, these simulations, which are approximately 2-9 minutes long, are used as part of their curriculum to help students quickly and thoroughly grasp the concepts being presented in a visual format. Some simulations are paired with additional interactive quiz questions and can be downloaded as .zip files.
Topics covered include: AC Circuits, DC Circuits, Digital Currents & Systems, Electrical Motor Control, Fluid Power Control, Fluid Power Design & Application, Fluid Power Fundamentals, Industrial Print Reading (Engineering Design), Industrial Robotics, Lean Manufacturing, Microcontrollers, Motion Control, Process Control, Programmable Logic Controllers, and Solid Stats & Systems.
This workforce solution is funded by the Pathways to Engineering Technology Careers grant which is 100% financed through a $2.5 million grant from the U.S. Department of Labor’s Employment & Training Administration.

Learn how friction causes a material to heat up and melt. Rub two objects together and they heat up. When one reaches the melting temperature, particles break free as the material melts away.

Learn how friction causes a material to heat up and melt. Rub two objects together and they heat up. When one reaches the melting temperature, particles break free as the material melts away. Arabic Language.

Esta atividade/aula tem como ponto de partida a importância dos fenómenos ondulatórios em situações do dia a dia, desde espelhos, radares, código de barras, código QR, comunicações, entre outras. Após a exploração de um conjunto de aplicações dos fenómenos ondulatórios no quotidiano, propõe-se uma ativadade prática e investigativa a realizar em grupo. 

Basic anatomy and physiology overview of the glomerular filtration rate of the Kidneys.