Students are provided with evidence used to support evolutionary theory. They are introduced to classification by using primates as an example. Students read article related to Hominoid Skull Comparison and write a summary about the...

In this Virginia reading comprehension worksheet, students read a multiple-page selection regarding the state and then respond to 10 true or false questions.

Students list four ways to identify trees. In this tree identification instructional activity, students use tree identification techniques such as leafs, bark, wood grain, soil type, and climate to create tables and graphs.

Learners explore earthquakes. They build and test models to see if they will withstand an earthquake. Students explain their reasons for constructing buildings in a particular manner.

Third graders, in groups, examine soil samples with magnifying glasses. They discuss the living and non-living things they find in their soild samples.

Students examine and compare preserving natural resources and preserving cultural resources. They conduct Internet research on two topics, and write a position paper on whether cultural resources or natural resources are more important...

High schoolers experiment with crystals and polymers and examine their roles in food science.

Students write and communicate mathematically with their classmates. They discuss the mathematics that it took to allow us to conquer space and land on the moon. They sketch a plaque they would leave on the moon.

Students throw dice and make their way around a board, answering questions, performing tasks and finding out about the environment as they go.

In this engineering worksheet, students research engineering and fill in blanks to complete sentences. A reference web site is given.

Students hypothesize dinosaur size and speed by looking at dinosaur track way or by measuring a dinosaur models water displacement. In addition, techniques to help students become familiar with the ways paleontologists study fossils can...

Students identify and interpret maps, graphs, charts, tables and political cartoons. Students identify what a compass rose is and review its meaning in relation to standard directions. Students design their own weathervanes. Students...

Students define what population is in their own words. In this biology lesson, students explain different ways to measure population density. They interpret population graphs.

This two-part resource explores the vertical structure of Earth's atmosphere. Content details the atmospheric layers, and the relationship between pressure and height in the atmosphere.

Take a look at the Earth from the inside out. This site shows the different layers of the earth with an explanation of the rocks and materials in each layer. Includes a quiz on the structure of Earth.

A college course featuring mineral image galleries, labs, and instructor's notes on the topics of crystalline structure, crystal chemistry, and bonding in rock-forming minerals.

As part of the General Chemistry Virtual Textbook, this site examines a variety of topics related to the Earth. This page looks at the Earth and its lithosphere, the chemical composition of the Earth, the structure of the Earth, and more.

Article describing the parts of a cell. Includes chart listing the main parts of a cell and their definitions. Discusses some of the ways a cell can become damaged. (Published: February 28, 2008)

A collection of grid puzzles that cover topics in basic chemistry, including acids, salts, alkalis, chemistry lab equipment, the periodic table, states of matter, and more. These are excellent for topic review and reinforcement. The...

A discussion of the structure and types of amino acids, and of how they combine to form proteins. (Published: October 16, 2010)

Explains the features of animals defined as vertebrates, how they evolved, and their taxonomy. (Published: April 29, 2010)

Article discussing the structure, function, and efficiency of stomata, the apertures on plants' leaves that regulate gas and water vapor exchange during photosynthesis. (Published: August 3, 2010)

Describes the structure and coding of DNA, how it replicates, and the role it plays at the cellular level. Looks at past and current research on DNA, and applications of this research. (Published: September 25, 2010)

Windows to the Universe provides a brief overview of the structure of the interior of Earth.