For students enrolled in natural science courses in ETSU's general education core

Interactive tool for practicing comparing two lengths, areas, and volumes. It is VERY TRICKY to judge how area and volume change with size. This tool gives you good practice. Good for physics problems to do with pressure, gravity, and other places where area or volume are important. Explore size estimation in one, two and three dimensions! Multiple levels of difficulty allow for progressive skill improvement.

*August 26, 2010*
by *Michael Garrett*

Interactive tool for showing how derivatives and integrals relate to a graph of a function. Really great for experimenting with the meaning of basic calculus ideas. Intuitive and graphical. Spend a little time playing to see where the derivative is zero, positive, negative, or how the integral grows. Draw a graph of any function and see graphs of its derivative and integral. Don't forget to use the magnify/demagnify controls on the y-axis to adjust the scale.

*August 26, 2010*
by *Michael Garrett*

Interactive simulation of vector addition. Let's you practice adding vectors in arrow style to get a feel for the math. 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.

*August 26, 2010*
by *Michael Garrett*

Online tutorial on using scientific notation to describe and compute with really large and really small numbers. Great review! 17 short Flash tutorials delivered in a charming British female voice. Good graphics and examples moving step-by-step through the use of scientific notation.

*August 25, 2010*
by *Michael Garrett*

Interactive java app that let's you zoom in and out from the cosmic scale down to the nanoscale. Good for practicing scientific notation and Greek prefixes. View the Milky Way at 10 million light years from the Earth. Then move through space towards the Earth in successive orders of magnitude until you reach a tall oak tree and move from the actual size of a leaf into a microscopic world that reveals leaf cell walls, the cell nucleus, chromatin, DNA and finally, into the subatomic universe of electrons and protons

*August 24, 2010*
by *Michael Garrett*

Downloadable simulation showing inertia in action. A simple demo, but it nails the point home. This Demonstration depicts a simple experiment, in which a small car with an object on top hits an obstacle, and the object continues its motion in the same direction and with the same speed

*August 24, 2010*
by *Michael Garrett*

Downloadable simulation showing periodic trends in the properties of elements in a novel way. Good for seeing how electronegativity, atomic radius, and so on, change across groups and periods. This Demonstration shows 3D bar charts of the periodic table with various element property values

August 26, 2010byMichael Garrett0