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This case study presents the story of "Nick," a student who has been assigned the task of writing a research paper describing the fundamentals of chemical bonds and how they relate to human life. When Nick experiences difficulty remembering information about the different types of chemical bonds, he turns to his tutor, Josh, for help. Josh explains orbitals and valence electrons to Nick, and then they together review nonpolar and polar covalent bonds, ionic bonds, and hydrogen bonds. A final practical application exercise requires that students write about how different types of chemical bonds may relate to the development of Alzheimer's disease and to the mechanism of action of potential drug treatments.  The case is presented with PowerPoint slides and is designed to be used with a personal response system ("clickers"), but students can instead record their answers on paper or share them verbally.  The content is appropriate for use in high school and undergraduate introductory chemistry and biology courses.

Adrenoleukodystrophy fact sheet, NIH Neurological disorders and stroke 

This comprehensive virtual tour allows visitors using a desktop computer (Windows, Mac, Linux) or a mobile device (iPhone, iPad, Android) to take a virtual, self-guided, room-by-room walking tour of the whole museum. You can even browse a list of past exhibits, which is included on the ground floor map (see upper right map buttons).

This comprehensive virtual tour allows visitors using a desktop computer (Windows, Mac, Linux) or a mobile device (iPhone, iPad, Android) to take a virtual, self-guided, room-by-room walking tour of the whole museum. You can even browse a list of past exhibits, which is included on the ground floor map (see upper right map buttons). 

Habitat loss and disease in the American prairie pushed the black-footed ferret ​to the edge of extinction. Now these underground-dwelling mammals are making a comeback, through a captive-breeding program run by the U.S. Fish and Wildlife Service. There, baby ferrets-called kits-are raised and released into the wild.​

Bedbugs are a growing public health issue in the United States and around the world, but their resurgence in recent years may have been aided by humans who unwittingly helped the pests evolve numerous ways of thwarting a common insecticide, scientists say.

New ways of visualizing scientific and medical data and concepts can enhance discovery and learning. The NIH 3D Print Exchange provides access to a community-contributed database of bioscientific 3D-printable files. Download a model and print it with your own 3D printer or through a 3D print service provider.

Over the years, many teachers have told us that these films seen on NATURAL HEROES offer a valuable resource for the classroom. To help more teachers and students take advantage of the rich content of these timely stories, we have developed a 46-page classroom guide consisting of 6 projects aligned to common core to accompany these films. We also have included interactive links to additional resources and short video selections from the films to use with your students.

Using a pre-drawn template can be helpful during a consultation to explain single gene inheritance. Our template shows one pair of chromosomes for each parent. Each chromosome has a single gene highlighted that can be coloured in to illustrate a gene alteration. You can then show which sperm and/or eggs contain the chromosome with the gene alteration and the different genetic combinations that could be present at conception.

This case study follows two beginning undergraduate researchers on a quest for a summer research project related to food web ecology. While writing their research proposal, the students receive feedback indicating that they have neglected an entire group of organisms from their food web-parasites, which leads them to a scientific research paper discussing how these organisms have been overlooked by scientists studying food webs, the challenges involved with including parasites in food webs, and the contributions parasites ultimately make to food webs. An integrated activity in which students visualize the food web using images of organisms and answer questions about species interactions provides opportunities to examine key concepts such as omnivory, ontogenetic diet changes, trophic levels, complex life cycles, and taxonomic aggregation. This case study was originally written for an undergraduate general ecology course, but could easily be adapted to undergraduate general biology courses covering community ecology or specific courses in invertebrate zoology, parasitology, or disease ecology. The teaching notes also discuss how the included code for R statistical computing software can be used to extend the case study in a more quantitative direction if desired.

This case study synthesizes students' knowledge of the central dogma and cell structure by examining a rare health disorder in order to understand protein targeting and its medical consequences. Students first identify the molecular alteration in affected members of a family with renal Fanconi syndrome as reported in the New England Journal of Medicine (2014). Students then use an online bioinformatics tool to analyze the wildtype and mutant proteins and examine their subcellular localization. Finally, students use this information to explain the symptoms of affected family members. The case is delivered with a PowerPoint presentation that includes a selection of brainstorming prompts and "clicker questions." Students complete a worksheet (included in the teaching notes) before class, making the activity suitable for a flipped classroom. A second worksheet (also included in the teaching notes) is completed during class. The case is written for an introductory biology course for majors, but could also be used as a unit capstone in a non-majors human biology course; the case is also scalable to upper division courses in physiology that specifically explore kidney function.

5:12 video animation describes the basics of enzyme structure and function. This includes enzyme substrates and active sites, enzyme denaturation, and competitive and non-competitive inhibition.

When plastic trash degrades in the ocean, it doesn't just go away: It becomes countless tiny particles, and little creatures called larvaceans sweep it up--and into the food chain.

The scientists are from the Centers for Disease Control and Prevention, and they have embarked on this watery journey to solve a decades-old mystery about a rare and fatal disease: monkeypox. A cousin to the deadly smallpox virus, the monkeypox virus initially infects people through contact with wild animals and can then spread from person to person. The disease produces fever and a rash that often turns into painful lesions that can feel like cigarette burns. It kills up to 1 in 10 of its victims, similar to pneumonic plague, and is particularly dangerous in children. Monkeypox is on the U.S. government list of pathogens such as anthrax and Ebola with the greatest potential to threaten human health. There is no cure.

Teaching K-12 Science and Engineering During a Crisis aims to describe what high quality science and engineering education can look like in a time of great uncertainty and to support practitioners as they work toward their goals. This book includes guidance for science and engineering practitioners - with an emphasis on the needs of district science supervisors, curriculum leads, and instructional coaches. Teaching K-12 Science and Engineering During a Crisis will help K-12 science and engineering teachers adapt learning experiences as needed to support students and their families dealing with ongoing changes to instructional and home environments and at the same time provide high quality in those experiences.