Cambrian period 543-490 million years Introduction The Cambrian Period marks the beginning of the Paleozoic Era. This period gets its name from a place in Wales where the first examples of this type of ancient life was found. The period lasted for nearly 53 million years‚ from about 543 million years ago until 490 million years ago. The Cambrian Period marks an important point in the history of life on earth; it is the time when most of the major groups
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The Precambrian-Cambrian Boundary In the history of the Earth geologists study events in the geologic time scale and fossil record to gain an understanding of the structural and biological history of our planet. One of the debated and studied areas of Earth’s history is the sudden occurrence of multicellular hard-shelled organisms from soft bodied and single celled organisms in the Precambrian-Cambrian boundary. The debut of hard parts in the fossil record is believed to have occurred 570 million
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Sensitive Periods Introduction Sensitive periods are a termed coined by a Dutch biologist Hugo de Vries and later adopted by Dr. Montessori to refer to the important period of development in childhood. Montessori was not very specific in her published works about the precise number‚ description‚ or timing of these sensitive periods. These periods are critical to the child’s self-development. She set out several periods with the approximate ages to which they applied. Dr. Montessori believed‚ adults
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Sensitive Periods Sensitive periods‚ refers to times in our lives when we are biologically primed to respond to certain influences in our environment. Montessori believed that the most critical times were from infancy to the age of 6. She believed that the period was transient‚ and limited to acquiring a particular trait. Once acquired‚ the specific sensibility disappeared. Sensitive periods are critical for growth and development. They allow the child to connect with the environment
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Sensitive Periods Define the term sensitive periods Sensitive periods are a period in a child’s life where they are obsessed with certain aspects of learning without any particular reason. This period is an optimum time for development and children can really develop specific abilities and skills. When children are in their sensitive periods and working with any activity‚ they will not show any signs of fatigue and will repeat the activity a number of times. These periods last for a certain
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sensitive periods and link them appropriately to the child’s first stage of development. Explain how you would support these sensitive periods during this first crucial stage. Dr. Maria Montessori‚ basing on her scientific child observation‚ concluded that children learn and adjust to their surroundings on their own and by the means of inner powers (Montessori‚ 1966) they possess at birth: the Absorbent Mind (Montessori‚ 2007a)‚ human tendencies (Montessori‚ 1966) and sensitive periods (Montessori
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The sensitive periods "A child’s different inner sensibilities enable him to choose from his complex environment what is suitable and necessary for his growth. They make the child sensitive to some things‚ but leave him indifferent to others. When a particular sensitiveness is aroused in a child‚ it is like a light that shines on some objects but not others‚ making of them his whole world." The Secret of Childhood p. 42‚ Chap 7 A sensitive period refers to a transient state that children go through
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Eras‚ Periods‚ and Epochs. Within each Eon is several eras‚ periods‚ and Epoch. Within each Era is different periods and epoch. Finally within each period is different epochs. Spanning roughly 322 years‚ the Paleozoic Era occupied over half of the Phanerozoic Eon. The Phanerozoic Era‚ (meaning “time of ancient life”) is extremely significant to the earths history because this is the era that the first “hard” organisms developed. The Paleozoic Era is divided into six geological periods‚ beginning
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The Cambrian explosion is named for the geologically sudden appearance of numerous metazoan body plans some 540 million years ago (James W. Valentine et al. 1999). In Earth’s pre-history during the Cambrian period many animal phyla suddenly appear in fossil records and introduced more complex organisms. “For that the evolution of the planet Earth is described by the co-evolution of the geosphere biosphere system” (Werner Von Bloh et al. 2003). A sudden increase of biomass and rapid cooling had occurred
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INTRODUCTION The Tokugawa period was in between 1603 – 1868. The time of peace and order in feudal japan was c.1400-1860. The subjects I will talking about are artisans‚ rōnin‚ merchants and daimyo. ARTISANS During the Middle Ages‚ the word artisan was applied to those who made stuff or provided tasks other people could not do. It did not apply to unskilled manual labourers. Artisans were divided into 2 very distinct groups: those who operated their very own businesses and those who did not
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