Question of the Day: Making a Scientific Argument part of Question of the Day
A scientific argument must persuade the reader that the data you present, and your arguments are strong enough, to support your theory, model, or proposed action. The effective writer will make it easy for the ...

U.S. Population Growth: What Does the Future Hold? part of Examples
College Algebra or Liberal Arts math students are presented with a ConcepTest, a Question of the Day and a write-pair-share activity involving U.S. population growth. The results are quite revealing and show that while students may have learned how to perform the necessary calculations, their conceptual understanding concerning exponential growth may remain faulty. Student knowledge (or lack thereof) of the size of our population and its annual growth rate may also be surprising.

Question of the Day: The Structure of the Earth part of Question of the Day
On the cross-section diagram below, label: Crust. Mantle. Lithosphere. Asthenosphere. The depth to the boundaries between each of the above specified layers. The direction of lithospheric motion. Where you would ...

Question of the Day: Efficiency of Food Production part of Question of the Day
The figure below shows a simple food chain for land production. How much solar energy does a vegetarian utilize when eating 1,000 calories of plant material? Use the information from the figure to calculate this. ...