![]() ![]() How does this understanding of active and passive recreational use affect mountain biking in urban areas? But when talking about active or passive recreational uses, what is being referred to? How can one activity be referred to as “active use” and a seemingly similar activity be referred to as “passive use”. Sonar on ships and submarines can do the same, passively listening for other vessels or sending out a “ping” to listen for the echo. Microscopes can be passively viewing or, like an electron microscope, they can actively view. Some types of instruments can be in either passive or active types. ![]() Passive sensors do not emit any energy, but measure the observed item's own emitted energy, again, light waves, sound waves or kinetic means to measure properties of that item. Active sensors use some kind of directed energy, whether that be light waves, sound waves or kinetic means to measure properties about an item. Parts 1,2, and 3 cover grammar, speaking, listening, reading and writing, while “Culture & Literature” explores Korean culture and gives students an introduction to literary works.In the discussion of scientific instruments and measuring devices, there are two major categories: active sensors and passive sensors. Unit 1 “The Korean Language and Hangeul” gives a basic introduction to Korean alphabet and the structure of Korean sentences.įrom Unit 2, each chapter is divided into four parts : Parts 1,2,3, and “Culture & Literature”. In addition, taking into consideration the demands and preferences expressed by students, levels 1 to 3 consist of two books each, and in levels 1 and 2 the instructions and explanations are given in English, Japanese, or Chinese.Įwha Korean 1-1 covers Units 1~7 and Ewha Korean 1-2 covers Units 8~15. The “Try it” section in each chapter is designed to encourage students to improve their conversation skills without memorization by creating their own dialogue according to a given situation and explanation of the flow of the dialogue and vocabulary. While fostering balanced development of the four language skills, the new textbook is designed with an emphasis on speaking ability. Ewha Korean is a comprehensive textbook covering the four skills of speaking, listening, reading, and writing with related content throughout all levels. ![]()
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