Animal Defenses An article with photos of some of the innovative means animals have developed for attack and...		North American Continental Divide A brief explanation of the North American continental divide.
Celsius and Fahrenheit Conversions Made Simple Through simple addition, subtraction, and multiplication, convert Celsius temperature to...		World Heritage Sites in the United States A list of World Heritage sites in the United States.
National Park System of the United States A chart listing U.S. National Parks.		Eclipses of the Sun and Moon, 2005 - 2012 An article listing the dates and places of eclipses occurring between 2005 and 2012.
National Monuments in the U.S. A chart listing U.S. National Monuments.		Countdown to the Science Fair A checklist of tasks and suggested timing in preparation for a science fair.
National Scenic Trails A chart listing U.S. National Scenic Trails.		Substitute Teacher Information Filling in these sheets will provide your substitutes with the necessary information to run...
Extreme Geographical Points of the United States A chart listing the extreme geographical points of the United States.		Assignment Record Keep track of your students' grades with this handy chart. This printable is customizable....
Rivers of the United States A list of rivers, 350 miles or longer, in the United States.		Photosynthesis Help students to understand the process of photosynthesis.
Highest Mountain Peaks in the United States A chart listing the highest mountain peaks in the United States.		Air Pressure and Humidity Your students will find explanations of air pressure and humidity here.
Geographical Highs, Lows, and Boundaries of the U.S. A chart listing geographical highs, lows, and boundaries of the U.S.		Beaufort Wind Scale A chart detailing the Beaufort Wind Scale.
Highest, Lowest, and Mean Elevations in the United States, by State A chart of the highest, lowest, and mean elevations in the United States, by state.		Number the Stars Character Jeopardy After reading Lois Lowry's classic novel Number the Stars, play this game of "Jeopardy"...