Students develop an understanding of how aspirin works and how understanding its interaction with other chemicals in the body aided doctors in medical research.

Students learn about air masses and the role they play in weather and climate.

This is an interactive resource in which the students learn about the systems of the body including the respiratory system.

An online activity about human body systems. The goal of this activity is to drag the correct organs of the body system into Arnold's body. When you mouse-over an organ, its name appears. There is also a student sheet for students to answer questions based on the activity. This resource supports the English language development of English language learners.

Students assess the goals, benefits, success, and limitations of technology (instruments) on a space mission.

Students complete hands-on activities and read information online in order to answer the central question of the lesson: How does understanding the chemistry of hair care, including the role of pH, help in the development of better hair-care products.

Students are introduced to the energy transformations involved in the burning of hydrocarbons.

Students examine how physical features noted in the fossil record provide clues about the evolution of species.

Students explore how DNA can tell us about ourselves and other organisms and species. They will also learn about the systematic study of the human genome and write an article summarizing what they have learned throughout the lesson.

This lesson plan focuses on food chains and food webs. There are multiple associated weblinks to supplemental videos and interactive resources.

This lesson is the second of a two-part series on the cycle of life. This series should help enhance student understanding of the flow of matter and energy and the interdependence of life by focusing on food chains and food webs.

Students explore plate tectonics and understand how mountains, earthquakes, and volcanoes are related to the movements of plates.

Students research and assess past, present, and future decisions related to energy shortages, using the California energy crisis as a case study.

Students examine the ethical issues raised by three situations in which prenatal testing may be used to prevent or facilitate pregnancy.

This lesson is based on the highly engaging book Feathers: The Evolution of a Natural Miracle by Thor Hanson. Alternate texts and strategies for sharing are provided in case there are not enough book resources for all students to have an individual copy. As they read, students will take notes and then participate in an interactive "grab bag book review" where they will take objects from a bag, one at a time, to act as prompts for re-telling big ideas from the book and lesson.

Students examine the interdependence of global trade in the context of the economic and social aspects of fisheries and aquaculture.

Students read the online booklet "Fossils, Rocks, and Time" which provides an introduction to the study of earth's history and the role fossils play in helping us understand this history.

In this lesson, students demonstrate that it is the tilt of Earth's axis that causes the seasons.

This lesson introduces students to the genetic information stored in DNA within the human cell nucleus.

Students will understand the pattern of genetic variation among humans and how variation has been introduced into our species over time. As a culminating activity, students will pick a trait variation to research and report.

In this lesson, students understand the fundamental methods of plant classification and become familiar with their applications in science. Students will explore how plant structures can be used to build phylogenetic trees.

In this student-centered learning model, students work collaboratively in small teams to design a heat- and water-conserving "green roof" of plant material for an urban apartment building. This is a multimedia project involving web and library research, hand drawings, creation of exhibit boards with text, photos and data graphics, and a final presentation of findings.

In this lesson, students examine how evolution has been scientifically explained historically. In doing so, students will read and analyze the arguments and theories set forth by three historically significant scientists: Jean Baptiste Lamarck, Alfred Russell Wallace, and Charles Darwin.

Students explore the issues of ethics in medical research and, in particular, the issue of informed consent, in the context of Henrietta Lacks and the HeLa cells. This lesson uses the book The Immortal Life of Henrietta Lacks written by Rebecca Skloot.

In this one page online article, students read to learn about the integumentary system, which includes skin, hair, nails, glands and nerves. Students will discover that the main function of the integumentary system is to protect the body and act as a defense mechanism in the immune system.

Students are introduced to natural selection, specifically how it unfolds from generation to generation.

Students explore the Everglades ecosystem using the Internet, to develop an understanding about conservation of resources in the context of the Everglades, to explore relationships between species and habitats, and to develop an understanding of how human beings have altered the equilibrium in the Everglades.

This interactive tool is based on the classic story of evolution by natural selection - the story of the peppered moths in England during the Industrial Revolution. The simulation uses green and orange bugs to demonstrate how natural selection influences the changes in species over time.

Students explore the ways in which a scientist is applying research on animal locomotion for practical human uses, examine the locomotion of microscopic protists, and propose potential practical applications of their observations.

This is the first of two lessons about reproduction in plants. This lesson covers how most plants normally reproduce - sexually.

Students will microscopically observe various subcellular components and determine the effects of different salt solutions on Elodea plant cells.

Students investigate the causes and consequences of population growth and the environmental factors that contribute to it.

Students will conduct research and engage in simple activities to understand how sound travels and to discover the difference between transverse and longitudinal waves.

This interactive e-book guides students through the effects of alcohol on the body and some of the physical and social consequences of underage drinking. The e-book was produced by the AAAS Science Inside Alcohol Project, which is funded by the National Institute on Alcohol Abuse. It has several sections to it, including: Alcohol and the Human Body, Impacts of Underage Drinking, and FAQs about Underage Drinking. In addition to these sections, there is a special section on stories about kids who have been impacted by alcohol abuse in some way.

Students explore how geoscientists use technology and computer modeling to find oil and natural gas.

Students understand organism interactions and how those interactions shift in response to climate change, especially in grassland communities.

This science update discusses how modern farming techniques may help fight global warming by releasing less carbon dioxide into the atmospshere.

In this lesson, students will identify and sort plant parts through hands-on activities and group discussions and then work with magnifying lenses and tape measures to document their observations on a student sheet.