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Scientific Inquiry Journal

by Jeanne Harrington

Pages 8 and 9 of 19

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Fourteen big ideas in science
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Of the fourteen big ideas in science, outlined in 'Principles and big ideas of science education', by Wynne Harlen (2010), I identified two that I would find most difficult to explain to children in the classroom:
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1. Changing the movement of an object requires a net force to be acting on it 

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This would be difficult to explain to children due to the fact that gravity, being "a universal force of attraction between all objects" (Harlen, 2010, p.21), is not something that they can see, or hold.
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Evidently, I would be able to demonstrate gravity by dropping a pencil, but for the children to understand the linkage between this and the fact that gravity "keeps all the planets in orbit around the Sun" (Harlen, 2010, p.21), could prove challenging.
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2. All material in the Universe is made of very small particles 
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Similar to the difficulty of explaining gravity without being able to see it, or hold it, atoms (and their make-up) would also be difficult to delineate to children.
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To explain to children that they are made up of atoms would be difficult as children see their arms, legs and eyes are part of their bodies but as the teacher, you are trying to expound that within their arms, legs and eyes are atoms.
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In addition, attempting to explain the fact that "opposite electric charges of protons and electrons attract each other, keeping atoms together" (Harlen, 2010, p.21), would be challenging.
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Field Trip to Dollymount Strand:
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Planning & Organising a Field Trip
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According to the 'Social, Environmental, and Scientific Teacher Guidelines' (1999), it is important to make a number of considerations when planning and organising a field trip.
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The following are four important aspects of planning and organising a field trip:
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1. 'Knowing the environment'
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It is crucial that the teacher has a thorough understanding of the locations that will be visited and explored.
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2. 'Identifying hazards'
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Additionally, dangerous areas and potential sources of danger should be identified during preliminary visits and should all be carefully noted.
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3. 'Choosing the activities in which pupils will engage'
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One of the most important factors in ensuring safe and worthwhile activity in the environment is having a clear understanding of the purpose of the fieldwork. The tasks that the children must complete will be tightly focused, which will demonstrate their sense of purpose.
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4. 'Preparing the pupils'
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Adequate planning in the classroom before any visit will improve the success of the activities and the safety of the students. Pupils should be introduced to some of the features they will research in this work as well as the ideas and/or techniques they will employ during their fieldwork.
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(DES, 1999)