Statistical data on the population and demographics of 228 countries, including change, sex ratios, life expectancy, and percent with HIV/AIDS. There are also detailed explanations of the means of producing these statistics. It is...

The importance of data analysis in science projects is explained. Describes common mistakes young scientists make. The article then discusses how to find out what the standard methods of data analysis are for the type of research you...

Students will measure the effects of the height of an inclined plane on the force a marble produces to move a plastic, foam, or paper cup across a table. Students will discover that the higher the incline plane, the more force produced...