This online set of activities help students learn properties of ocean waves, wind-wave relationships and properties of tsunamis.

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Akio Matsumoto, half-length portrait, seated at desk, facing front, painting sign. Title transcribed from Ansel Adams' caption on negative sleeve. Gift; Ansel Adams; 1965-1968. Forms part of: Manzanar War Relocation Center photographs.

Akio Matsumoto, half-length portrait, seated at desk, facing front, painting sign. Title transcribed from Ansel Adams' caption on negative sleeve. Gift; Ansel Adams; 1965-1968. Forms part of: Manzanar War Relocation Center photographs.

Akio Matsumoto, half-length portrait, seated at desk, facing front, painting sign. Title transcribed from Ansel Adams' caption on verso of print. Original neg. no.: LC-A35-4-M-40-Ax. Gift; Ansel Adams; 1965-1968. Forms part of: Manzanar War Relocation Center photographs.

Highlights from the past and present of Alabama, from the rich online collections of the Library of Congress.

Highlights from the past and present of Alaska, from the rich online collections of the Library of Congress.

This illustrated guide to Albian (Cretaceous) fossils provides an extensive photo collection of fossils from the Anglo-Parisian basin. Additional information, high resolution photos and illustrations can be accessed by clicking the fossil icons located on the globe, the time scale or along the top of the page. Although the site is written in French, a non-French-speaking visitor will find this page easy to navigate and the photos well worth the visit. Fauna featured on this site include ammonites, nautiloids, belemnites, gastropods, crusteceans, echinoderms, marine vertebrates and corals.

Aldosterone is a steroid hormone which is secreted from the zona glomerulosa of the adrenal gland. It has a mineralocorticoid activity and is the most important regulator of plasma potassium. When plasma potassium increases, increased stimulation of aldosterone occurs directly and also as a result of the Renin-Angiotensin-Aldosterone System (RAAS). Aldosterone is also the most important regulator of sodium excretion.

Manuscripts, images, and historic newspapers document the life and accomplishments of Alexander Hamilton. This set also includes a Teacher's Guide with historical context and teaching suggestions. Manuscripts, images, and historic newspapers document the life and accomplishments of Alexander Hamilton'

Introducción al vocabulario informático para estudiantes de español (para uso en clase por parte del profesor)

Use tiles to represent variables and constants, learn how to represent and solve algebra problems. Solve equations, substitute in variable expressions, and expand and factor. Flip tiles, remove zero pairs, copy and arrange, and make your way toward a better understanding of algebra.

This resource is a video abstract of a research paper created by Research Square on behalf of its authors. It provides a synopsis that's easy to understand, and can be used to introduce the topics it covers to students, researchers, and the general public. The video's transcript is also provided in full, with a portion provided below for preview:

"A new algorithm has successfully mapped part of the brain’s circuitry during shock therapy. For those suffering from severe depression, the approach could make for safer and more effective treatment. For brain research at large, it could lead to better ways of untangling noisy neural data to reveal real connections between different focal regions of the brain. Despite the gruesome picture painted by pop culture, modern shock therapy is a mild treatment option. In fact, over 2 million treatments are administered worldwide every year. Under general anesthesia, patients receive a small amount of current to the brain, triggering a brief seizure. The resulting changes in brain chemistry have been shown to reverse symptoms of mental health conditions like severe depression or bipolar disorder. But the procedure isn’t perfect. One of the most troubling side effects is memory loss, a result of poor targeting. To be effective and safe, induced seizures should be restricted to the pre-frontal cortex..."

The rest of the transcript, along with a link to the research itself, is available on the resource itself.

Born into poverty in rural Georgia and raised under the shadows of Jim Crow segregation and the Great Depression, Alice Coachman fought through gender taboos and racial barriers to become a record-breaking track star. Then, in the 1948 London Olympics (the first to be held after WWII), she leapt to victory in the high jump and became the first Black woman in history to win Olympic gold. One of postwar America’s most high-profile athletes and the first African American woman to be spokesperson for a national brand, Coachman’s life and achievements were honored during the 1996 Atlanta Olympic games.The Woodson Center's Black History and Excellence curriculum is based on the Woodson Principles and tells the stories of Black Americans whose tenacity and resilience enabled them to overcome adversity and make invaluable contributions to our country. It also teaches character and decision-making skills that equip students to take charge of their futures. These lessons in Black American excellence are free and publicly available for all.