What is science

460 views
385 views

Published on

Published in: Education, Technology
0 Comments
0 Likes
Statistics
Notes
  • Be the first to comment

  • Be the first to like this

No Downloads
Views
Total views
460
On SlideShare
0
From Embeds
0
Number of Embeds
1
Actions
Shares
0
Downloads
5
Comments
0
Likes
0
Embeds 0
No embeds

No notes for slide

What is science

  1. 1. WHAT IS SCIENCE? David Geelan
  2. 2. <ul><li>There are at least four parts to a definition: </li></ul><ul><li>A set of methods and standards for creating and testing knowledge claims </li></ul><ul><li>A body of knowledge that has been created by scientists and has (so far) succeeded in passing such testing </li></ul><ul><li>The domain of human knowledge that deals with the natural world </li></ul><ul><li>A world view or set of values – a commitment to the methods and standards of science in their appropriate domain </li></ul>
  3. 3. Four Broad Disciplines <ul><li>Physics </li></ul><ul><li>Chemistry </li></ul><ul><li>Biology </li></ul><ul><li>Earth and Space Sciences – geology, meteorology, astronomy </li></ul>
  4. 4. <ul><li>The boundaries of the disciplines are blurred (and artificial) – chemical physics, physical chemistry, biophysics, bioinformatics, molecular biology, etc </li></ul><ul><li>Science uses mathematics and technology as tools </li></ul>
  5. 5. What’s The Big Idea? <ul><li>In teaching it is useful to identify a few ‘big ideas’ that we want students to know </li></ul><ul><li>More important than memorising facts and factoids </li></ul><ul><li>e.g. in Chemistry, one big idea is ‘everything is made out of chemicals’ </li></ul>
  6. 6. What is science to children? <ul><li>Fun! </li></ul><ul><li>Activities </li></ul><ul><li>A school subject </li></ul><ul><li>A way of knowing about the world </li></ul>
  7. 7. Two purposes of science teaching <ul><li>Preparation of future scientists, doctors and engineers </li></ul><ul><li>Preparation of all students to be informed, participating members of society </li></ul>
  8. 8. ‘ Scientia’ <ul><li>The word ‘science’ comes from the Greek word ‘scientia’, meaning ‘knowledge’ </li></ul><ul><li>Science is about making and testing ‘knowledge claims’ - claims that we know something </li></ul><ul><li>We test our claims to know about the world, against the world itself, using experiments </li></ul>
  9. 9. Scientific Methods <ul><li>(read the relevant literature to know what has been done before) </li></ul><ul><li>Propose an hypothesis </li></ul><ul><li>Determine what kind of evidence would verify (support) or falsify the hypothesis </li></ul><ul><li>Gather the evidence (dependent, independent and controlled variables) </li></ul><ul><li>Analyse it to test whether it supports the hypothesis </li></ul><ul><li>Critically evaluate your methods and actions </li></ul>
  10. 10. A Fair Test <ul><li>Adolescents love fairness! </li></ul><ul><li>When we claim to know something in science, we have to be able to support that claim with evidence that we have used the right procedures </li></ul><ul><li>The procedures (scientific methods) are what make us confident about our claims </li></ul>
  11. 11. My Claim <ul><li>More coffee makes lecturers perform better </li></ul><ul><li>To test my claim, what will we need to measure? (dependent variable) </li></ul><ul><li>What will we need to change? (independent variable) </li></ul><ul><li>What will we need to keep the same? (controlled variables) </li></ul>
  12. 12. Graphs <ul><li>One way to represent our evidence is with a graph </li></ul><ul><li>We put the independent variable (what we change) on the bottom axis and the dependent variable (what we measure) on the left axis </li></ul>
  13. 20. Another claim <ul><li>Bouncy balls will bounce higher when they’re warm than when they’re cold </li></ul><ul><li>What will we measure? </li></ul><ul><li>What will we change? </li></ul><ul><li>What will we keep the same? </li></ul>

×