Free Essay

Cell Biology, Genetics, Water Cycle, Earth/Space

In:

Submitted By Andreaandjeremy
Words 1061
Pages 5
Journal Article Review
Andrea Kennedy
9/24/15
SCE 4360
Practical Work in Science: Misunderstood and Badly Used. By: Johnathan Osbourne

This article tackles the issue of practical work or experimental processes within the science teaching field. Specifically, Osborne questions the usefulness and degree to which it is used.
Most science classes are taught in a lab and are only deemed valid if a hands on activity, lab, or experiment is used in teaching the lesson. In my opinion maybe this is because we need a measurable way to assess students' understanding and without a gradable lab report, this would be difficult. This leads to the main point in Osborne's article, that to understand and appreciate science we must also understand that science in itself is rooted in ideas, sometimes as Osborne states, "crazy" ideas. Osborne observes that most students when asked to name famous scientists, names such as Galileo, Einstein, Bohr, etc., are the main ones mentioned, all of which became famously known because they had a wild, crazy idea. He lists six "postulates" which have been determined to explain what students should learn in science classes. None of which include development of ideas, which he believes should be the basis for science teaching. His stand on practical work is that it is useful, but not in the way science teachers currently use it. Practical work has become the lesson in itself, rather than part of a larger lesson, and is being taught as a skill and method that should be perfected. Because of this, room for exploration and new ideas is eliminated, shutting out the very foundations of science. Practical work, particularly lab technique and experiments should be used as a real world connection only after ideas have been developed, discussed, thought over and explored. Then, rather than teaching to master a verified and planned out lab experiment student should be hands on in developing an experiment and methods to carry out a valid experiment to provide proof or disproof of ideas. In this way, students fully understand the basis for science, and make connections between the idea and the experiment to test that idea, while learning how to develop that experiment. In this way, practical work is much more valuable than simply teaching students steps to carry out during an experiment. I find this article extremely valuable as it brings into question, are we making the most of students' time and resources. Countless times, for science labs, especially chemistry, I have gone through the steps in a lab manual and carried out the experiment without fully understanding what exactly it was I was testing until the very end, if at all. I had to follow steps, follow the proper technique, and achieve a measurable outcome or variable, which my grade was dependent upon. My observations were not really my own but graded against observations that should be

made based on what had already been done and verified before. It's frustrating and takes away from the magic and awe of science. At the end of it all, new ideas were not seen as valued nor would I have been able to design my own experiment. It begs the question, what skill are we teaching? Are we teaching students to question the world and develop ways to test those questions or are we simply teaching to follow directions to achieve a predetermined outcome? I fully believe based on my own education we are teaching the latter and should not be.
Unfortunately, teachers are subject to protocols by governments and other entities which stipulate what must be taught and to a degree, how it must be taught. I will however keep the questions from this article in mind when tackling ways to present a new lesson and developing lesson plans. Students can learn to follow a certain technique and precious time should not be devoted to achieving a certain outcome, but the bigger determination of the grade should be, are they capable of questioning the world we live in? Can they informatively and respectfully engage in discussions about those ideas? Do they have the foundation and vocabulary to do that? Can they develop and carry out a test or experiment valuable enough to produce results for those ideas? Do they comprehend what is being obtained from the data and manipulations in an experiment? These are questions that I will ask myself as I review my lesson plan to make sure I am using practical work for what it was intended for as an inclusive approach rather than simply to grade whether my students can achieve the same results as countless other before them.

This article does an excellent job of questioning the use of practical work in the classroom; about eight pages of how it is misused. However, there is only 1-2 small paragraphs concerning the benefits for lab work. Osborne does not provide any details to the invaluable uses of this tool in the manner to which some topics in science simply need to be seen rather than explained. He also does not mention the idea of varying learning styles among students and how this is affected by overuse of lab work. There is an example of questions pertaining to a lab experiment and there are suggestions for how to overcome the overuse or misuse of practical work, but there are no specific examples of how to make the lab experiment more inclusive of the lesson. Osborne points out studies which have measured students understanding of experiments in which most have found they understand only to the degree of following the steps with no real deeper comprehension of concepts, although he does list some exceptions to these studies in which the opposite was found. What he fails to do is explain why; what was the difference between the two studies or the experiments? This would be interesting to know to see if there is some common denominator. I also found it strange that most of Osborne's quotes from others and references are from the late 1990's or very early 2000's. His article was written in 2015, so I would assume it may be more relevant to include some more recent sources.

Sources
Osborne, J. (n.d.). School Science Review number 357. Retrieved September 26, 2015, from http://www.ase.org.uk/journals/school-science-review/2015/05/357/

Similar Documents

Free Essay

Inc1 C451 Comprehensive Study Notes

...How is the scientific method used to solve problems? Scientific method used to solve problems by keen observations, rational analysis, and experimentation. Observation: Closely observe the physical world around you. How is the scientific method used to solve problems? Scientific method used to solve problems by keen observations, rational analysis, and experimentation. Observation: Closely observe the physical world around you. Question: Recognize a question or a problem. Hypothesis: An educated guess or a reasonable explanation. When the hypothesis can be tested by experiment, it qualifies as a scientific hypothesis Prediction: Consequences that can be observed if the hypothesis is correct. The consequences should be absent if the hypothesis is not correct. Conclusion: Formulate the simplest general rule that organizes the hypothesis, predicted effects, and experimental findings. What is the principle of falsifiability? For a hypothesis to be considered scientific it must be testable?it must, in principle, be capable of being proven wrong. Fact: A phenomenon about which competent observers can agree. Theory: A synthesis of a large body of information that encompasses well-tested hypotheses about certain aspects of the natural world. Law: A general hypothesis or statement about the relationship of natural quantities that has been tested over and over again and has not been contradicted. Also known as a principle. Evidence: which...

Words: 33649 - Pages: 135

Premium Essay

Business

...responsible for infection may be picked up by walking barefoot in an infected area or using an infected towel. Infection can be prevented by limiting the use of occlusive footwear and remaining barefoot.[6] Globally, it affects about 15% of the population Bacteria (i/bækˈtɪəriə/; singular: bacterium) constitute a large domain of prokaryotic microorganisms. Typically a fewmicrometres in length, bacteria have a number of shapes, ranging from spheres to rods and spirals. Bacteria were among the first life forms to appear on Earth, and are present in most habitats on the planet. Bacteria inhabit soil, water, acidic hot springs,radioactive waste,[2] and the deep portions of Earth's crust. Bacteria also live in plants and animals (see symbiosis), and have flourished in manned space vehicles.[3] There are typically 40 million bacterial cells in a gram of soil and a million bacterial cells in a millilitre of fresh water. There are approximately 5×1030 bacteria on Earth,[4] forming a biomass that exceeds that of all plants and...

Words: 2754 - Pages: 12

Premium Essay

Ib Biology Guide

...Biology guide First assessment 2016 Biology guide First assessment 2016 Diploma Programme Biology guide Published February 2014 Published on behalf of the International Baccalaureate Organization, a not-for-profit educational foundation of 15 Route des Morillons, 1218 Le Grand-Saconnex, Geneva, Switzerland by the International Baccalaureate Organization (UK) Ltd Peterson House, Malthouse Avenue, Cardiff Gate Cardiff, Wales CF23 8GL United Kingdom Website: www.ibo.org © International Baccalaureate Organization 2014 The International Baccalaureate Organization (known as the IB) offers four high-quality and challenging educational programmes for a worldwide community of schools, aiming to create a better, more peaceful world. This publication is one of a range of materials produced to support these programmes. The IB may use a variety of sources in its work and checks information to verify accuracy and authenticity, particularly when using community-based knowledge sources such as Wikipedia. The IB respects the principles of intellectual property and makes strenuous efforts to identify and obtain permission before publication from rights holders of all copyright material used. The IB is grateful for permissions received for material used in this publication and will be pleased to correct any errors or omissions at the earliest opportunity. All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted...

Words: 43724 - Pages: 175

Premium Essay

Lyrics

...Science Content Standards A Message from the State Board of Education and the State Superintendent of Public Instruction. In 1998 California adopted academically rigorous content standards in science. The adoption of standards in each core subject area marked a turning point in the education reform movement that began in 1983 with the report A Nation at Risk: The Imperative for Educational Reform, by the National Commission on Excellence in Education. Until then, the reform movement had focused on important but largely structural improvements, such as more instructional time, minimum course requirements for high school diplomas, and an emphasis on local planning efforts to promote efficiency and effectiveness. The desire to improve student achievement was there, but the focus on content-that is, a comprehensive, specific vision of what students actually needed to know and be able to do-was lacking. Standards are a bold initiative. Through content standards in the core subjects, California began to redefine the state’s role in public education. For the first time, the knowledge and skills that students needed to acquire were explicitly stated for the most part by grade level, although science standards at the high school level were organized by discipline. The standards are rigorous. Students who master this content are on a par with those in the best educational systems in other states and nations. The content is attainable by all students, given sufficient time, except for those...

Words: 15360 - Pages: 62

Premium Essay

Campbell Essential Biology

...6 Cellular Respiration: Obtaining Energy from Food Muscles in action. Sprinters, like all athletes, depend on cellular respiration to power their muscles. CHAPTER CONTENTS Energy Flow and Chemical Cycling in the Biosphere 92 Cellular Respiration: Aerobic Harvest of Food Energy 94 Fermentation: Anaerobic Harvest of Food Energy 101 CHAPTER THREAD Aerobic versus Anaerobic Lifestyles BIOLOGY AND SOCIETY Marathoners versus Sprinters THE PROCESS OF SCIENCE What Causes Muscle Burn? EVOLUTION CONNECTION Life before and after Oxygen 91 102 103 Aerobic versus Anaerobic Lifestyles BIOLOGY AND SOCIETY Marathoners versus Sprinters Track-and-field athletes usually have a favorite event in which they excel. Some runners specialize in sprints of 100 or 200 meters. Others excel at longer races of 1,500, 5,000, or even 10,000 m. It is unusual to find a runner who competes equally well in both 100-m and 10,000-m races; most runners are more comfortable running races of particular lengths. It turns out that there is a biological basis for such preferences. The muscles that move our legs contain two main types of muscle fibers: slow-twitch and fast-twitch. Slow-twitch muscle fibers can contract many times over a longer period but don’t generate a lot of quick power for the body. They perform better in endurance exercises requiring slow, steady muscle activity, such as marathons. Fast-twitch muscle fibers can contract more quickly and powerfully than slow-twitch fibers but also...

Words: 24897 - Pages: 100

Premium Essay

Natural Environment

...(biophysical) Land management policies have been developed to preserve the natural characteristics of Hopetoun Falls, Australia while allowing ample access for visitors Bachalpsee in the Swiss Alps; generally mountainous areas are less affected by human activity. A satellite image of the Sahara desert; the world's largest hot desert and third-largest desert after Antarctica and the Arctic The natural environment encompasses all living and non-living things occurring naturally on Earth or some region thereof. It is an environment that encompasses the interaction of all living species.[1] The concept of the natural environment can be distinguished by components: * Complete ecological units that function as natural systems without massive civilized human intervention, including all vegetation, microorganisms, soil, rocks, atmosphere, and natural phenomena that occur within their boundaries * Universal natural resources and physical phenomena that lack clear-cut boundaries, such as air, water, and climate, as well as energy, radiation, electric charge, and magnetism, not originating from civilized human activity The natural environment is contrasted with the built environment, which comprises the areas and components that are strongly influenced by humans belonging to a civilized (i.e. hierarchically structured, agricultural, densely populated, complexly systematized) society. A geographical area is regarded as a natural environment. It is difficult to find absolutely...

Words: 5733 - Pages: 23

Premium Essay

Bacteria

...microscope. Bacteria live all around us and within us. The air is filled with bacteria, and they have even entered outer space in spacecraft. Bacteria live in the deepest parts of the ocean and deep within Earth. They are in the soil, in our food, and on plants and animals. Even our bodies are home to many different kinds of bacteria. Our lives are closely intertwined with theirs, and the health of our planet depends very much on their activities. Bacterial cells are so small that scientists measure them in units called micrometers (µm). One micrometer equals a millionth of a meter (0.0000001 m or about 0.000039 in), and an average bacterium is about one micrometer long. Hundreds of thousands of bacteria would fit on a rounded dot made by a pencil. Bacteria lack a true nucleus, a feature that distinguishes them from plant and animal cells. In plants and animals the saclike nucleus carries genetic material in the form of deoxyribonucleic acid (DNA). Bacteria also have DNA but it floats within the cell, usually in a loop or coil. A tough but resilient protective shell surrounds the bacterial cell. Biologists classify all life forms as either prokaryotes or eukaryotes. Prokaryotes are simple, single-celled organisms like bacteria. They lack a defined nucleus of the sort found in plant and animal cells. More complex organisms, including all plants and animals, whose cells have a nucleus, belong to the group called eukaryotes. The word prokaryote comes from Greek words meaning “before nucleus”;...

Words: 7813 - Pages: 32

Free Essay

Synoptic Essay Tips

...2 AQA BIOL5: The synoptic essay AQA A2 Biology: Writing the Synoptic Essay by Dr Robert Mitchell CT Publications Copyright © Dr Robert Mitchell 2010 www.ctpublications.co.uk 0800 040 7901 Dr Robert Mitchell A catalogue record for this book is available from the British Library ISBN 978-1-907769-02-3 First published in May 2010 by CT Publications Copyright © Dr Robert Mitchell 2010 The right of Robert Mitchell to be identified as the author of this work has been asserted by him in accordance with the Copyright and Designs and Patents Act 1988. All rights reserved. No part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording or any information storage and retrieval system, without permission in writing from the publisher at the address below. Published in 2010 by CT Publications* 40 Higher Bridge Street Bolton Greater Manchester BL1 2HA Edition 10 9 8 7 6 5 4 3 2 1 *CT Publications is owned by Chemistry Tutorials located at the same address. Copyright © Dr Robert Mitchell 2010 www.biologytutorials.co.uk 0800 040 7901 3 4 AQA BIOL5: The synoptic essay CONTENTS 1. Be aware of the task you face ............................................................................ 6 What is Synoptic? ........................................................................................... 6 Will I have to learn everything? ..............

Words: 7147 - Pages: 29

Premium Essay

Answers to Conceptual Sciences

...Answers to Conceptual Integrated Science End-of-Chapter Questions Chapter 1: About Science Answers to Chapter 1 Review Questions 1 The era of modern science in the 16th century was launched when Galileo Galilei revived the Copernican view of the heliocentric universe, using experiments to study nature’s behavior. 2 In Conceptual Integrated Science, we believe that focusing on math too early is a poor substitute forconcepts. 3 We mean that it must be capable of being proved wrong. 4 Nonscientific hypotheses may be perfectly reasonable; they are nonscientific only because they are not falsifiable—there is no test for possible wrongness. 5 Galileo showed the falseness of Aristotle’s claim with a single experiment—dropping heavy and lightobjects from the Leaning Tower of Pisa. 6 A scientific fact is something that competent observers can observe and agree to be true; a hypothesis is an explanation or answer that is capable of being proved wrong; a law is a hypothesis that has been tested over and over and not contradicted; a theory is a synthesis of facts and well-tested hypotheses. 7 In everyday speech, a theory is the same as a hypothesis—a statement that hasn’t been tested. 8 Theories grow stronger and more precise as they evolve to include new information. 9 The term supernatural literally means “above nature.” Science works within nature, not above it. 10 They rely on subjective personal experience and do not lead to testable hypotheses. They lie outside...

Words: 81827 - Pages: 328

Premium Essay

Gcse Science Help

...word or part of the text and writing above it as follows: • • • • 5. 6. 7. 8. Spelling mistake (Sp) Missing full stop (Gr) Missing capital letter (Gr) Poor grammar (Gr) Cross out any bits that are irrelevant to the question Add up their total number of marks If there are more than three spelling or grammar errors minus one mark Leave constructive feedback Biology Cells Tissues & Organs Summary All living things are made up of cells. The structures of different types of cells are related to their functions. To get into or out of cells, dissolved substances have to cross the cell membranes. Cells    Cells are the smallest unit of life. All living things are made of cells. Most human cells, like most other animal cells, have the following parts: o nucleus o cytoplasm o cell membrane o mitochondria o ribosomes Plant and algal cells also have: o cell wall o chloroplasts o permanent vacuole  What do these structures do?         Nucleus – controls the activities of the cell. Cytoplasm – where most of the chemical reactions take place. Cell membrane - controls the passage of substances in and out of the cell....

Words: 18368 - Pages: 74

Free Essay

Kekewk

...AS Biology Unit 1 page 1 AQA AS Biology Unit 1 Contents Specification Biological Molecules Chemical bonds Carbohydrates Lipids Proteins Biochemical Tests Enzymes Eukaryotic Cells Prokaryotic Cells Cell Fractionation Microscopy The Cell Membrane Movement across Cell Membranes Exchange The Gas Exchange System Lung Diseases The Heart Coronary Heart Disease The Digestive System Cholera Lifestyle and Disease Defence against Disease Immunisation Monoclonal Antibodies 1 – Mathematical Requirements 2– The Unit 1 Exam 2 4 6 8 10 16 17 24 28 30 31 35 37 44 46 50 54 58 60 67 68 72 80 81 83 86 Cells Human Physiology Disease Appendices These notes may be used freely by A level biology students and teachers, and they may be copied and edited. Please do not use these materials for commercial purposes. I would be interested to hear of any comments and corrections. Neil C Millar (nmillar@ntlworld.co.uk) Head of Biology, Heckmondwike Grammar School High Street, Heckmondwike, WF16 0AH July 2011 HGS Biology A-level notes NCM/7/11 AS Biology Unit 1 page 2 Biology Unit 1 Specification Biochemistry Biological Molecules Biological molecules such as carbohydrates and proteins are often polymers and are based on a small number of chemical elements. • Proteins have a variety of functions within all living organisms. The general structure of an amino acid. Condensation and the formation of peptide bonds linking together amino acids to form polypeptides. The relationship...

Words: 22438 - Pages: 90

Free Essay

Religious Education

...to be made without fee. Individuals may make copies for their own use or for use by classes of which they are in charge; institutions may make copies for use within and by the staff and students of that institution. For copying in any other circumstances, prior permission in writing must be obtained from Macmillan Publishers Limited. Under no circumstances may the material in this book be used, in part or in its entirety, for commercial gain. It must not be sold in any format. Designed by Macmillan Publishers Limited Cover design by Macmillan Publishers Limited and Red Giraffe CSEC Biology Free Resources LIST OF CONTENTS CSEC Biology Syllabus Extract 3 CSEC Biology Syllabus 4 CSEC Biology Specimen Papers: Paper 01 Paper 02 Paper 032 89 104 125 CSEC Biology Mark Schemes for Specimen Papers: Paper 01 Paper 02 Paper 032 136 137 149 CSEC Biology Subject Reports: 2004 January Subject Report 2004 June Subject Report 2005 January Subject Report 2006 January Subject Report 2007 January Subject Report 2007 May/June Subject Report 2008 January...

Words: 29406 - Pages: 118

Free Essay

Essay of Today

...None of these 6. A biologist removes some bones of dinosaurs from a rock. He is studying: (a) Morphology (b) Paleontology (c) Ecology (d) None of these 7. Darwin sys, “man has formed from monkey”. He talked about (a) Fossil (b) Evolution (c) Taxonomy (d) None of these 8. Kangaroo lives in Australia but buffaloes lives in Pakistan. The study of this distribution of animals is called (a) Ecology (b) Environmental biology (c) Taxonomy (d) Zoogeography 9. The study of structure of molecule of starch is called: (a) Molecular biology (b) Biochemistry (c) Morphology (d) None 10. The study of Amoeba comes with in the branch of biology: (a) Taxonomy (b) Ecology (c) Microbiology (d) None 11. The study of affects of pollution comes within: (a) Environmental biology (b) Taxonomy (c) Physiology (d) Genetics 12. The study of organisms living in lake is called: (a) Marine biology (b) Taxonomy (c) Physiology (d) Fresh water biology 13. The study of amount salt, temperature etc of water of sea comes within: (a) Environmental biology (b) Taxonomy (c) Marine biology (d) None of the above...

Words: 18276 - Pages: 74

Free Essay

Registered General Nursing Student

...many ways, as a creative intellectual activity in its own right, as a light which has served to illuminate man’s place in the uni-verse, and as the source of understanding of man’s own nature” —John F. Kennedy (1917–63) The President of America The bacterium Escherichia coli INTRODUCTION AND SCOPE MICROBIOLOGY is a specialized area of biology (Gr. bios-life+ logos-to study) that concerns with the study of microbes ordinarily too small to be seen without magnification. Microorganisms are microscopic (Gr. mikros-small+ scopein-to see) and independently living cells that, like humans, live in communities. Microorganisms include a large and diverse group of microscopic organisms that exist as single cell or cell clusters (e.g., bacteria, archaea, fungi, algae, protozoa and helminths) and the viruses, which are microscopic but not cellular. While bacteria and archaea are classed as prokaryotes (Gr. pro-before+ karyon-nucleus) the fungi, algae, protozoa and helminths are eukaryotes (Gr. eu-true or good+ karyon-nucleus). Microorganisms are present everywhere on earth, which includes humans, animals, plants and other living creatures, soil,water and atmosphere. Microorganisms are relevant to all of our lives in a multitude of ways. Sometimes, the influence of microorganisms on human life is beneficial, whereas at other times, it is detrimental. For example, microorganisms are required for the production of bread, cheese, yogurt, alcohol, wine, beer, antibiotics (e.g., penicillin,...

Words: 9515 - Pages: 39

Premium Essay

Inc1 Modules 3-9

...amplitude­ height of wave  b. wavelength­ length of a wave  c. frequency­ number of waves per second (Hz)  d. period­ how long a wave lasts when it arrives at a fixed point (measured in seconds)      3. What are radio waves?  An electromagnetic wave of a frequency used for long­ distant communication.     4. Explain the difference between a transverse wave and a longitudinal wave, and give examples of  each.  In a longitudinal wave, the vibration travels in the same direction that wave travels. Examples of longitudinal  waves include: Sound, p­-waves (earthquakes)     In a transverse wave, the vibration direction is perpendicular to direction that wave travels. Examples  include: Light/electromagnetic, (radio, microwave, x­ray, etc.), water waves, s­waves (earthquakes).     The major difference between longitudinal and transverse waves is their direction. Longitudinal waves move  left to right while transverse waves move up and down.       5. Compare and contrast: light waves vs. sound waves   Light waves are transverse and sound waves are longitudinal. Light waves can travel through a vacuum but  sound waves cannot. Speed of light is nearly 300 million m/s while sound has a speed of about 340 m/s.    6. What changes the pitch of sound?  The frequency of vibration. Faster vibration would cause a higher pitch while slower vibration would cause a  lower pitch.     7. Explain how different factors affect the speed of sound?  Speed of sound depends on factors such as altitude...

Words: 11922 - Pages: 48