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Essential Ideas:
Since 1948, the Système International d’Unités (SI) has been used as the preferred language of science and technology across the globe and reflects current best measurement practice.
Scientists aim towards designing experiments that can give a “true value” from their measurements, but due to the limited precision in measuring devices, they often quote their results with some form of uncertainty.
Some quantities have direction and magnitude, others have magnitude only, and this understanding is the key to correct manipulation of quantities. This subtopic will have broad applications across multiple fields within physics and other sciences.
Understandings:
Fundamental and derived SI units
Scientific notation and metric multipliers
Significant figures
Orders of magnitude
Estimation
Applications and skills:
Using SI units in the correct format for all required measurements, final answers to calculations and presentation of raw and processed data
Using scientific notation and metric multipliers
Quoting and comparing ratios, values and approximations to the nearest order of magnitude
Estimating quantities to an appropriate number of significant figures
Essential Questions:
How can I learn to ask better questions?
How can our 5 senses deceive us?
When is good enough, enough?
What are the ideals or habits of mind that scientists share?
How do I know if I can ‘trust’ a measurement?
How do I select the proper tool to use to take the proper measurements?
How do we properly collect, and organize data?
What are effective methods of displaying data?
How can we create new knowledge from data we have collected?
International-mindedness:
Scientific collaboration is able to be truly global without the restrictions of national borders or language due to the agreed standards for data representation
Theory of knowledge:
What has influenced the common language used in science? To what extent does having a common standard approach to measurement facilitate the sharing of knowledge in physics?
Utilization:
This topic is able to be integrated into any topic taught at the start of the course and is important to all topics
Students studying more than one group 4 subject will be able to use these skills across all subjects
See Mathematical studies SL sub-topics 1.2–1.4
Aims:
Aim 2 and 3: this is an essential area of knowledge that allows scientists to collaborate across the globe
Aim 4 and 5: a common approach to expressing results of analysis, evaluation and synthesis of scientific information enables greater sharing and collaboration
Resources Relevant to Topic 1 -
Use the drop down menu in the upper LEFT corner to see list of videos.
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NEED ACS Process
Topic #1: Measurements and Uncertainties—5 Hours for Both SL and HL
Topic #1: Measurements and Uncertainties—5 Hours for Both SL and HL
1.1 Measurements in physics
Fundamental and derived SI units
Scientific notation and metric multipliers
Significant figures
Orders of magnitude
Estimation
1.2 Uncertainties and errors
Random and systematic errors
Absolute, fractional and percentage uncertainties
Error bars
Uncertainty of gradient and intercepts
1.3 Vectors and scalars
Vector and scalar quantities
Combination and resolution of vectors
Introductory Activities:
Bringing an equation to life:
Bringing an equation to life:
Ft=m𐊅v
Create and submit an explanation of how your final design overcame to challenges of dropping the egg. Your submission can be any of the following: performance, visual, video, poetry, presentation, game, blog post, artwork, film, dance, etc. Please submit the link to your explanation HERE
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