After completing his BA, Jason continued his community work and became a mentor for Eagle Academy in the Bronx, founded the Young Men’s group at The Fresh Air Fund and became the founding Board Member and Chair of the Academic...

David Perkins is the Carl H. Pforzheimer, Jr., Professor of Teaching and Learning, Emeritus, at the Harvard Graduate School of Education. He has conducted long-term programs of research and development in the areas of teaching and...

One of the world’s favorite holiday traditions has a long history. Fireworks started in ancient China where people used explosives because they were believed to ward away evil spirits. From their beginnings as simple noise makers to the...

Patti P. Phillips, Ph.D., is co-founder and CEO of ROI Institute. She is a driving force in the global adoption of the ROI Methodology and measurement and evaluation to influence organizational change. Her work as an educator,...

Professor Harris has written for more than 50 publications over the past 25 years, including the New York Times, Los Angeles Times, Chicago Tribune, New Haven Register, Northeast Magazine, and USA Today. He currently writes a column for...

Vivian Shipley is the author of several books of poetry, including All of Your Messages Have Been Erased (Southeastern Louisiana University Press, 2010), Greatest Hits: 1974–2010 (Pudding House Press, 2010), and Hardboot: Poems, New &...

MOT 1953: YALE UNIVERSITY SCIENCE: VS Scientist & Yale University Science professor Paul Rufus Burkholder working in laboratory, pouring liquid into flask, examining samples in tubes. Lab, antibiotics

Born in Manchester, British poet and playwright John Anthony (Tony) Connor left school at 14 and spent 26 years as a textile designer, also serving in the Royal Army. He earned an MA at the University of Manchester. With poet Robin...

James E. Ryan is the 11th dean of the Harvard Graduate School of Education. A leading expert on law and education, Ryan has written extensively about the ways in which law structures educational opportunity. His articles and essays...

You may have heard that carbon is the element of life. What does that mean? Let's find out!

Chinma Uche is a Math and Computer Science (CS) teacher at the Academy of Aerospace and Engineering (AAE) and the Greater Hartford Academy of Math and Science (GHAMAS). She is the 2015 CREAC Teacher of the Year. She has been at GHAMAS...

Sara Lawrence-Lightfoot is an author, educator, researcher, and public intellectual. She has pioneered an innovative social science method called "portraiture," written eleven books, serves on numerous professional and scholarly boards...

LaShawn Harris is an associate professor of History at Michigan State University and assistant editor for the Journal of African American History (JAAH). Her area of expertise includes twentieth century African American and Black Women’s...

Dennis Barone is a Professor of English at the University of Saint Joseph (formerly Saint Joseph College) in West Hartford, Connecticut. He is currently editing two poetry anthologies: New Hungers for Old: One-Hundred Years of...

Master Verifying an identity using the double angle formulas

MOT 1936: EXT M.I.T. Buildings. 1892 DRAMATIZATION: Biology professor William Thomas Sedgwig in lab Typhoid Fever outbreak Sedgwick investigates narrowing it down to a farm w/ contaminated milk.

Social ethicist and scholar of American religions Jonathan L. Walton joined the faculty of Harvard Divinity School in July 2010 and President Drew Faust appointed him Plummer Professor of Christian Morals and Pusey Minister in...

Depth first traversal can be of 3 types based on the order in which the node is processed relative to its left and right sub-trees. Pre-order traversal processes the node before processing the left and then the right sub trees.
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Master Evaluating the half angle for sine, cosine, and tangent given a right triangle

Arun Advani, a graduate student at King's College, notes that the recent financial crisis has been eye-opening, in that some old ideas that are still taught in schools now seem more obviously unrealistic. Advani believes that business...

Greeks Speaking English with a Greek Accent | Easy Greek 65



Easy Greek is a project to help you learn Greek in an authentic and fun way. We interview people in the streets of Athens and other places in Greece. All our videos...

Lamees Gouda Ameen is an English teacher at the Mostafa Kamel Official Language School in Banha, Qualubiya, Egypt. This video highlights the impact of Lamees's father, a professor at Cairo University, on their life. Her father not only...

Master Evaluating the double angle for Sine, Cosine and Tangent given an equation and constraint

You will learn idioms from American football in this American English training video. I’ll show you idioms examples that you can use right away in conversation and that will help you as you watch American football. Idioms in English are...