Interactive simulation of travel to six different stars at selected speeds. A comparison of the time elapsed on Earth vs the time elapsed on the spaceship. Upon arrival back to Earth, information about how Earth has may have changed during the time gone on the trip is shown.

Contains three levels: Essence of simple machines where the player learns about all of the types of simple machines and mechanical advantage. Find the simple machine where the player finds the simple machines used in the construction of a lawnmower. Putting simple machines together where the player must correctly calculate the mechanical advantage of various simple machines used to complete a task.

A simulation/game where the player makes selections of crop and animals to "grow". "Cards" are drawn that give the player the chance to make choices for type of product, machinery, fertilizer, etc. Players start the game with $2,000,000 and current average costs are deducted for each choice made to set up the farm. The game cycles through a year and occasional "Baaaaad news" cards pop up, usually costing more money. Players are also given choices for contract prices for their products and determine how much yield to put out to contract. At the end of the year, the estimated sales are applied and the income is calculated. Players can look at a summary of their efforts.

An interactive site with 5 simulations regarding the heart: Anatomy - construct a model of the heart structure and a model of the heart circulatory pathways. Disease - learn about diagnostic tools and heart diseases/disorders. Includes a section where learners can "try out" the diagnostic tools. Exploring the Hospital - Learn about heart catheterization and heart surgeries. Read about medical profession careers Surgery - Learn about heart bypass surgery and perform a virtual heart bypass surgery Prevention - learn about prevention of heart disease and follow one patient's life timeline and how his choices affectied his heart health

The ultimate virtual dissection. Gamers complete a total knee replacement using virtual tools.