An article about using user-ids and passwords to control access to various web pages.

Conduct an investigation collaboratively on the effect of force applied on an object to produce data to serve as the basis for evidence, by using fair tests in which variables are controlled and the number of trials are considered.

Compare three prototypes of paper towels using strategies to find the best value in terms of cost and quality. Determine the surface area of a water stain on a paper towel using a transparent grid.

Students are broken up into four groups. Each group will use their knowledge about Egypt to originate a playground for Egyptian children. This will involve brainstorming ideas on paper, building a prototype with Legos or other material,...

This tutorial includes a video on 3-D printing is an innovative manufacturing technique developed by Professors Michael Cima and Emanuel Sachs from the Massachusetts Institute of Technology. Once just used to create working prototypes,...

Students learn about the engineering design process as they work in teams to design a process and a product to solve the Toxic Popcorn Challenge and save the city.

A virtual tour of the permanent exhibition rooms of the Nikola Tesla Museum in Belgrade, Yugoslavia. Includes photographs of his prototypes on display and explanations of their significance.

The Red Fort Complex was built as the palace fort of Shahjahanabad - the new capital of the fifth Mughal Emperor of India, Shah Jahan. Named for its massive enclosing walls of red sandstone, it is adjacent to an older fort, the...

This house was built for banker William Watts Sherman by H. H. Richardson in 1875, and is recognized as a prototype of the Shingle style of architecture.

Virginia City was a prototype for frontier mining boom towns, owing its success to the 1859 discovery of Comstock Lode.

This was the prototype for the Saturn V launch vehicle and was the first Saturn V constructed by the Marshall Space Flight Center under the direction of Dr. Wernher von Braun. It served as the test vehicle for the Saturn support...

Circular and polygonal plans appear in a number of Syrian examples of the early sixth century. Their most striking feature is the inscribing of the circle of polygon in a square which forms the exterior outline, and the use of four...

Located in the historic centre of Isfahan, the Masjed-e Jame ('Friday mosque’) can be seen as a stunning illustration of the evolution of mosque architecture over twelve centuries, starting in ad 841. It is the oldest preserved edifice...