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The March of Time
1942: U.S. MARINES TRAINING: WS Cadets (AKA 'Rookies, Boots') hurdling, climbing over low exercise fences, wires. WS Cadets climbing over sandbags, pulling themselves up, officer watching BG. VS Men climbing over steep ramps. Training camp
MOT 1942: U.S. MARINES TRAINING: WS Cadets (AKA 'Rookies, Boots') hurdling, climbing over low exercise fences, wires. WS Cadets climbing over sandbags, pulling themselves up, officer watching BG. VS Men climbing over steep ramps....
The March of Time
US Tank defense
MOT 1937: U.S. TANK DEFENSE: WS Armored tanks (unknown from where) on dirt road. CU Chapter in book 'Tanks have their uses but...' NIGHT: MS U.S. Soldiers in gas masks manning anti-tank gun smoke. National Security
Brian McLogan
How to use special trig limits to evaluate the limit
👉 Learn how to evaluate the limit of a function involving trigonometric expressions. The limit of a function as the input variable of the function tends to a number/value is the number/value which the function approaches at that time....
Brian McLogan
Given the focus and directrix write the equation of a parabola
Learn how to write the equation of a parabola given the focus and the directrix. A parabola is the shape of the graph of a quadratic equation. A parabola can open up or down (if x is squared) or open left or right (if y is squared)....
Crash Course
Medieval China: Crash Course History of Science #8
Medieval Chinese scientists were the masters of invention! Explore the wonders of the Far East through the eighth installment in a 15-part History of Science series. The resource covers contributions to science and technology by dynasty,...
Crash Course
Ancient and Medieval Medicine: Crash Course History of Science #9
Medieval medicine is a mash-up of multicultural ideas! How did early doctors learn to do no harm? The ninth video in a 15-part series about the History of Medicine uncovers the fundamental teachings that sparked intense anatomical study...
Other
Socratica Kids: Intro to Computers: What Are Computers and Programming for Kids
We use computers every day! But what ARE computers and how do they work? Puppet Topher meets his friend Ulka, a computer programmer, who explains to kids how computers work. [6:59]