Students in a kindergarten class are introduced to the concept of time. Individually, they compare the current year to their birth year to discover their age. As a class, they practice reading a digital and analog clock and create their...

Students explain how cell phones work. In this physics lesson, students describe the advantages and advantages of having one. They identify the different parts of a cell phone.

Students explore basic DVD technology and discover the differences between Blu-ray discs and HD DVDs. In addition, students find advertisements of two very similar products from different manufacturers in the newspaper, and compare them.

This site presents a pictorial timeline of technology developments.