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 on graphing 2nd degree polynomials (aka, quadratics). Nicely shows what each coefficient contributes. 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. Especially good for constant acceleration problems in physics. These produce 2nd degree polynomials of distance vs time.

August 26, 2010byMichael Garrett0