This brief video clip demonstrates how to create a hovercraft from simple materials. Toward the end of the clip, the students in the video explains the science behind the hovercraft's motion (reduced friction). Students are encouraged to continue the experimentation on their own by changing variables in the design of the hovercraft.

This resource requires students to test their engineering skills and try to match the right bridge to the right location.

In this virtual lab, students create a DNA fingerprint and then compare it to those of seven suspects to solve a crime.

In this media gallery, a series of videos examines the mathematical concepts of mean, median, mode, and range. The accompanying classroom activity asks students to build on what they’ve learned by playing a game called "Sure Shots." In this game, students are directed to find out how many attempts it takes, on average, to get a pom-pom into a can. Students make a series of attempts and collect the data. Then, after a group discussion, they take the data and determine the mean, median, mode, or range

In this lesson, students practice time management by making their own schedules. They learn to calculate elapsed time in both digital and analog formats.

In this activity, students learn why evolution is at the heart of a world health threat. They will investigate the increasing problem of antibiotic resistance in such menacing diseases as tuberculosis and influenza. Students take on the role of staff at a public health agency who are trying to communicate the widespread problem of evolving disease-causing agents to the public.

In this interactive, students use logic and mathematical skill to place aquatic animals at locations on a Cartesian graph with cardinal directions. Then, they determine both the vertical and horizontal distances between points. The riddles in the interactive, including one that requires an understanding of rate, have randomized values so that students can practice placing points at different locations and calculating different distances. The accompanying classroom activity provides a review of concepts related to determining the distances between points on a Cartesian graph and a response sheet to help students work with the interactive

In this interactive, students use clues and logic to plot the location of aquatic animals on a Cartesian graph that represents the four cardinal directions. The three riddles in the interactive, including one that requires students to understand rate, have randomized values so that students can practice placing points at different locations on the graph. The accompanying classroom activity provides students with a review of locating points on a Cartesian graph. A response sheet helps students work with the interactive.

In this interactive, use logic to solve three riddles involving a jumping wallaby competition. Then, using knowledge of inequalities and rational numbers, place the wallabies on the correct range from –5 to 5 on the number line. Numbers are randomized so that the range on the number line is different each time the riddles appear. The accompanying classroom activity includes a concept review and response sheets to support the online work.

In this interactive, use logic to solve riddles involving a wallaby jumping contest. Then, place each contestant’s jump—a fraction, mixed number, or decimal between –5 and +5—at the correct point on the number line. Backward jumps are represented by negative numbers and forward jumps by positive numbers. Numbers are randomized so that riddles can be solved and wallabies placed on the number line multiple times. The accompanying classroom activity includes a fraction/decimal concept review and a response sheet to accompany the online work.

In this interactive, learn about wildfires in the western US using an interactive map profiling active fires and graphs depicting historical data. In the accompanying classroom activity, students review aggregated data for 11 western states and then focus on data from a single state, describing the shape of the data and comparing changes across decades. To get the most out of this activity, students should be comfortable calculating mean and be familiar with percent.

In this interactive, students explore the Bay Area's major public transit lines and the dramatic income disparities that exist among the communities living along those routes in this infographic from KQED. In the accompanying classroom activity, students interpret the data and calculate the mean, median, and range for a given transit line.

In this video, students will learn that the word "cool" has a variety of meanings.

In this lesson, students will learn about different Muslim women and how they have changed over time. This lesson includes the research of a specific woman from different eras in Islamic history.

This NOVA episode tells the story of Dr. Judah Folkman and his 40-year quest to pioneer a novel form of cancer treatment based on his discovery of angiogenesis.

With this resource, NOVA chronicles the history of the Human Genome Project. This two-hour special, hosted by ABC "Nightline" correspondent Robert Krulwich, chronicles the fiercely competitive race to capture one of the biggest scientific prizes ever: the complete letter-by-letter sequence of genetic information that defines human life—the human genome. NOVA: Cracking the Code of Life tells the story of the success of the Human Genome Project and its profound implications for medicine and human health.

This NOVA episode examines new forensic techniques such as virtual autopsies, 3-D fingerprints, and digital crime scenes that are making crime solving into a more precise science.

This NOVA episode examines the return of diseases that were largely eradicated in the United States a generation ago. It takes viewers around the world to track epidemics, explore the science behind vaccinations, hear from parents with vaccine-related questions, and shed light on the risks of opting out.

This NOVA episode investigates how nature's most potent toxins might also contain the keys to a new generation of advanced drugs. Such drugs might help doctors treat heart attacks, cancer, diabetes, and other serious illnesses.

In this lesson, students are introduced to the theory of plate tectonics and explore how the theory was developed and supported by evidence. Through class discussion, videos, and activities, students seek connections between tectonic activity and geologic features and investigate how the theory of plate tectonics evolved.