Programs for students about to start first and second year courses in Mathematics. Students can test themselves to see whether they are ready for intermediate algebra, college algebra, business calculus, calculus I, II, or III, or ordinary differential equations.
Plexagon is a new modular geometry based on the radial pleating of polygonal plates, and their joining or co-bracing into 3D modules. This engineering approach can form a very practical basis for modular greenhouses (using recycled plastic sheeting) and modular homes (using fibrous and metal sheetin more
Those users who are looking for all things related to the Federal Reserve System will need to look no further than this well-designed and thorough website. Visitors will find a number of links on the left-hand side of the homepage that will take them directly to information about monetary policy, pa more
Created solely by author Frank Potter, this site is a large collection that provides web links to physical science curriculum materials for grades K-16 which are categorized by grade level and subject. Some of these subjects consist of: measurement, mechanics, energy, waves, thermodynamics, electrom more
The Ejs Simple Harmonic Oscillator model displays the dynamics of a ball attached to an ideal spring. The spring is initially stretched and the ball has zero initial velocity. The initial position of the ball can be changed by click-dragging the ball when the simulation is paused. You can modify thi more
This applet demonstrates the working of a refracting astronomical telescope. The telescope has two lenses called objective and eyepiece. The focal length of the two lensees can be changed by the user. As an example six brightest stars of the Pleiades, is viewed through the telescope and the reslutin more