Post on 22-Nov-2014
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LABORATORY METHOD OF TEACHING
““Lab Ex. Is taking Lab Ex. Is taking Creativity Creativity
to the Neto the NeXXt Power”t Power”
Dr. Prashant MehtaAssistant Professor
NLU Jodhpur
Welcome to the 6 Natural Science Oriented Wonders of
the World
I. Earth FormationsMount Everest
The Grand CanyonAyers Rock
Victoria FallsMeteor Craters
Great Barrier Reef
How do we view instructions?
“The previously dominant view of instruction as direct transfer of knowledge from teacher to student does not fit the current perspective.
The present view places the learner’s constructive mental activity at the heart of all instructional exchanges…”
“…This does not mean that students are left to discover everything for themselves, nor that what they discover and how they choose to describe and account for it are left solely to them…
Valid & Powerful Knowledge
“…Instruction must provide experiences and information from which learners can build new knowledge. Instruction helps to focus those processes so that the resulting knowledge is both valid and powerful.
Valid in the sense of describing the world well…and powerful in the sense of being useful and reliable for those students in many diverse settings.”
THE PURPOSE OF THIS SESSION
(WHAT’S SO SPECIAL ABOUT TEACHING LABS?)
• Labs are often the best or only source of INTERACTION for the students – Interaction with an instructor (you), with other
students, with the subject material itself, or with their prior knowledge and ideas about a topic.
• Labs/recitations are about actually DOING SCIENCE (or the inquiry activities of your field), not listening to someone talk about it.With a diverse mix of students, this approach has fostered creativity and hands-on
learning. Throughout the course students have created innovative interfaces that not only capture fundamental concepts of tangible interaction but also contribute novel
techniques for supporting collaborative design.
How do we get there
• Incrementally…– Small changes– Practice is essential– Expect resistance to repeat
again and again
• Experimentally…– A hands on learning process for
all– Some things work well in
laboratory setting–Most things need “tweaking”
adjustments
What it is?
Inquiry approach places the student in the role of the investigator.
– Asking questions– Structuring investigations– Confronting ambiguous findings– Constructing relationships and creating
metaphors
Inquire (verb)
• To ask about
• To search into especially by asking questions
• To make investigation
Science Learners……………………
• Are engaged by scientifically oriented questions.
• Give priority to evidence which allows them to develop and evaluate explanations that address scientifically oriented questions.
• Formulate explanations from evidence.
• Evaluate their explanations in light of alternative explanations, especially those reflecting scientific understanding; and
• Communicate and justify their proposed explanation.
Learning Cycle
EngageEngage student interest.
ExploreExplore content and learn lab skills through relevant and concrete experiences
ExplainExplain questions generated by introducing content
ElaborateElaborate by applying concepts and lab skills to new inquiry situations
EvaluateEvaluate content, process, and communication skills
FOUR PARTS OF EFFECTIVE TEACHING
• Provide Context: Why should anyone care or How do you learn best?
• Draw out students’ Prior Knowledge and (mis?)conceptions on topic– Ask them to predict will happen in a given situation and
WHY they think that (think, predict, write, pair, share)• Model Authentic Practice• Make Meaning from activity (or else it is busy work)– What were the Actual Results?– How does that connect back to the purpose of the activity?
What do the Results Mean?
MAJOR GOALS OF LAB WORK
• Teaching Manual and Observational skills relevant to the subject
• Improving understanding of methods of scientific enquiry• Developing problem solving and doing by self skills• Nurturing professional and constructive attitude
LABORATORY TEACHING IN PRESPECTIVE
• Integrated Laboratories• Project Work• Participation in Research• Computer Assisted
Laboratory Instruction• Audio Visual Laboratory• Simulated Experimentation• Demonstrations
SKILLS OF LABORATORY TEACHING
• Explaining and Presenting Experimental Information
• Questioning, Listening and Responding to process queries
• Giving Directions • Demonstrations• Pre Lab Preparation• Post Lab Findings• Helping Students • Preparing Laboratory
Course
SOME LABORATORY TEACHING METHODS
• Students learn by their own effort.• Demonstration method• Slide Booklets – Shows Process, Complex Procedure,
and Complicated Apparatus.• Tape Booklets – Provides instructions, Descriptions, and
Method of Calculations• Wall Charts• Video recording or Interactive Video• Computer Simulated Experiments
LEARNING IN LAB
• Know exactly what the students are supposed to learn and why they have to learn these things.
• Perform the entire experiment in advance. • Read and study the theory on which the experiment(s) are
based. • Research the relevance of the experiment, both the
technique being taught and the applications of the theory being demonstrated.
• Talk to instructors who will often have very useful tips about experiments you are performing.
• Decide how to introduce new method to make the lab exercise most effective.
• Guide students in preparing their lab reports by using experimental data and help them in data analysis and interpretations of reults.
LEARNING IN LABS
Multiple goals:• Enjoyment of hands-on, practical learning• Developing an understanding of concepts
and applications• Skill development
– Techniques - use and safe handling of equipment etc.
– Observation – care in observation, appropriate recording
– Data collection (measurement) and analysis
• Understanding methods of investigation/design in science,engineering etc. – Testing ideas– Cycles of questions, design,
observation / measurement, analysis, drawing conclusions
• Communication of learning outcomes• Collaborative learning
APPROACH TO PROBLEM SOLVING
• Identify the problem, • State the problem objective, • List constraints,
assumptions, and facts, • Generate possible solutions, • Determine the most likely
solution, • Conduct experimentation• Analyze the solution, • Synthesize the solution, • Evaluate the solution, • Prepare a report, • Implement the plan, • Check results for
consistency.
Most people learn best in a concrete manner involving personal participation, physical or hands-on activities, and opportunities for
personal discovery.
Everyone makes mistakes!!Mistakes leads to new scientific
discoveriesScientific discoveries takes place in lab
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