Educational Technology The history of educational technology is marked by the increasing complexity and sophistication of devices, exaggerated claims of effectiveness by technology advocates, sporadic implementation by classroom teachers, and little evidence that the technology employed has made a difference in student learning. Although technology proponents have from time to time claimed that technology will replace teachers, this has not occurred. The typical view among educators is that technology can be used effectively to supplement instruction by providing instructional variety, by helping to make abstract concepts concrete, and by stimulating interest among students. Read more

Curiosity is the main driver of learning. As a basic principle of learning, it makes little sense to force students to memorize large reams of text that they will either begrudgingly recall or instantly forget. The key is to let students focus on exploring an area which interests them and learn about it for themselves. A perfect example of a teaching technique based on self-learning is outlined by http://www.ted.com/talks/lang/es/sugata_mitra_the_child_driven_education.html" target="_blank" rel="noopener">Sugata Mitra at the TED conference. In a series of experiments in New Delhi, South Africa and Italy, the educational researcher Sugata Mitra gave children self-supervised access to the web. The results obtained could revolutionize how we think about teaching. The children, who until then did not even know what the internet was, were capable of training themselves in multiple subjects with unexpected ease. A common technique for exploring self-learning is the use of https://www.goconqr.com/mind-maps/" target="_blank" rel="noopener">Mind Maps. Teachers can create a central node on a Mind Map and allow students the freedom to expand and develop ideas. For example, if the focus is the Human Body, some students may create Mind Maps on the organs, Bones or Diseases that affect the human body. Later the students would be evaluated according to the Mind Maps they have created and could collaborate with each other to improve each others Mind Maps and come to a more comprehensive understanding of the Human Body. Read more

  A test tube is a kind of https://simple.wikipedia.org/wiki/Laboratory_glassware">laboratory glassware, composed of a fingerlike length of https://simple.wikipedia.org/wiki/Glass">glass tubing, open at the top, usually with a rounded https://simple.wikipedia.org/wiki/Lip">lip at the top, and a rounded 'U' shaped bottom. They range in size from a couple https://simple.wikipedia.org/wiki/Inch">inches to several inches long, from a few https://simple.wikipedia.org/wiki/Millimeter">millimeters to a couple https://simple.wikipedia.org/wiki/Centimeter">centimeters in https://simple.wikipedia.org/wiki/Diameter">diameter. They are designed to allow easy heating of https://simple.wikipedia.org/wiki/Sample">samples, to be held in a https://simple.wikipedia.org/wiki/Flame">flame, and often are made of expansion-resistant glasses, such as https://simple.wikipedia.org/w/index.php?title=Borosilicate_glass&action=edit&redlink=1">borosilicate glass (known by brand-names such as Pyrex and Kimax).   Read more