Check out this simple and organized viewing guide for the film Glory! Questions prompt learners to consider the evolution of characters over the course of the film, and to analyze the effects of the film and the efforts of the 54th...

President Dwight D. Eisenhower was a principled man who valued common sense, decency, and national security, and who made these values the cornerstones of his eight years in office. Middle and high schoolers watch as the 33rd president...

President George Herbert Walker Bush, sworn in as the 41st president of the United States, addresses the nation on January 20, 1989. He connects patriotism with hard work, citizenship with compassion, and strength in both American...

The lecturer describes how specific characteristics develop. In this case, he discusses eye marking. The impact of environmental factors significantly influences the likelihood of successful reproduction, as favorable genes are more...

The oxygen needed by our bodies to burn during respiration of glucose is obtained by ventilation. The anatomical structures involved in gaseous exchange are drawn and labeled. The explanations are excellent for a review or a student with...

Sal from Khan Academy shows your class a kidney on his Smart Board and writes down the main functions of the kidneys and nephrons. The different parts are highlighted and explained in detail. Continue to review the kidneys and nephrons...

A short video to clarify that the sketch in a previous video was incorrect. Apes DO NOT have tails.