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The Effect of Science Writing
Heuristic (SWH) Approach to
Students Critical Thinking Skills
Niphon Chanlen
Science Education
Prof. Brian Hand
What is SWH?
• Science-inquiry approach
• Integrating literacy into science classroom
• Focusing on claim and evidence, and
argumentation
Cornell Critical Thinking Test
“Critical thinking is reasonable and
reflective thinking focused on deciding
what to believe or do” (Ennis, Millman and Tomko, 2005)
5 Subscales
• Induction
• Deduction
• Observation
• Credibility
• Assumption
Content independent test/ Score: 0-76
Procedure
• Experiment group
• The SWH professional development
– (Pre) The Cornell Critical Thinking Tests
– Baseline Test
– ITBS Test
– Implementing the SWH approach
– (Post) The Cornell Critical Thinking Tests
Procedure
• Control group
– (Pre) The Cornell Critical Thinking Tests
– ITBS Test
– Implementing the any approach
– (Post) The Cornell Critical Thinking Tests
Participants
SWH (N) Control (N)
Teacher 11 6
Student 300 (5th-6th) 200 (5th -8th)
Data
Group Pre-CT Post-CT
SWH
Control
Group Pre-CT Post-CT
SWH
Control
Year 1 Year 2
Group Pre-CT Post-CT Delayed-Post
CT
SWH-SWH
Control-Control
SWH-Control
Year 1-2
Goals
• Writing an article about the effect of the
SWH approach to the critical thinking skills
• Possibility of future statistical analysis
Statistical Analysis Plan
• Split-plot ANOVA :
– main effect of group
– main effect of time (pre&post)
– Interaction between group and time
• Level of analysis
– Overall total
– Subgroup
• IEP
• SES
• Gender
Result
Cornell Critical Thinking Test
Group
Year 1 Year 2
Pre-test (SD) Post-test (SD) Pre-test (SD) Post-test (SD)
Treatment 40.43 (7.28) 46.31 (7.54) 41.75 (7.74) 46.65 (7.80)
Control 42.10 (8.39) 45.22 (8.65) 43.52 (8.47) 45.11 (8.55)
37
38
39
40
41
42
43
44
45
46
47
Pre-test Post-test Pre-test Post-test
Year 1 Year 2
40.43
46.31
41.75
46.65
42.1
45.22
43.52
45.11
SWH
Control
Year 1 Year 2
SWH 0.79 0.63
Control 0.37 0.19
Cornell Critical Thinking Test : Effect Size
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
Year 1 Year 2
0.79
0.63
0.37
0.19
SWH
Control

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10058855.ppt

  • 1. The Effect of Science Writing Heuristic (SWH) Approach to Students Critical Thinking Skills Niphon Chanlen Science Education Prof. Brian Hand
  • 2. What is SWH? • Science-inquiry approach • Integrating literacy into science classroom • Focusing on claim and evidence, and argumentation
  • 3. Cornell Critical Thinking Test “Critical thinking is reasonable and reflective thinking focused on deciding what to believe or do” (Ennis, Millman and Tomko, 2005) 5 Subscales • Induction • Deduction • Observation • Credibility • Assumption Content independent test/ Score: 0-76
  • 4. Procedure • Experiment group • The SWH professional development – (Pre) The Cornell Critical Thinking Tests – Baseline Test – ITBS Test – Implementing the SWH approach – (Post) The Cornell Critical Thinking Tests
  • 5. Procedure • Control group – (Pre) The Cornell Critical Thinking Tests – ITBS Test – Implementing the any approach – (Post) The Cornell Critical Thinking Tests
  • 6. Participants SWH (N) Control (N) Teacher 11 6 Student 300 (5th-6th) 200 (5th -8th)
  • 7. Data Group Pre-CT Post-CT SWH Control Group Pre-CT Post-CT SWH Control Year 1 Year 2 Group Pre-CT Post-CT Delayed-Post CT SWH-SWH Control-Control SWH-Control Year 1-2
  • 8. Goals • Writing an article about the effect of the SWH approach to the critical thinking skills • Possibility of future statistical analysis
  • 9. Statistical Analysis Plan • Split-plot ANOVA : – main effect of group – main effect of time (pre&post) – Interaction between group and time
  • 10. • Level of analysis – Overall total – Subgroup • IEP • SES • Gender
  • 12. Cornell Critical Thinking Test Group Year 1 Year 2 Pre-test (SD) Post-test (SD) Pre-test (SD) Post-test (SD) Treatment 40.43 (7.28) 46.31 (7.54) 41.75 (7.74) 46.65 (7.80) Control 42.10 (8.39) 45.22 (8.65) 43.52 (8.47) 45.11 (8.55) 37 38 39 40 41 42 43 44 45 46 47 Pre-test Post-test Pre-test Post-test Year 1 Year 2 40.43 46.31 41.75 46.65 42.1 45.22 43.52 45.11 SWH Control
  • 13. Year 1 Year 2 SWH 0.79 0.63 Control 0.37 0.19 Cornell Critical Thinking Test : Effect Size 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 Year 1 Year 2 0.79 0.63 0.37 0.19 SWH Control

Editor's Notes

  1. Year 1 SWH N=330 Grade average 5.58 (+/-1.00) Control N=212 Grade average 6.87 (+/-0.86) SHW group: overall we have 750 students but there are 283 students who take Critical thinking test (5th grade and older) grade average for critical thinking test taker is 5.60 SWH-SWH N= 78   Control group: 191 Students Grade average for critical thinking test taker is 7.12 NonSWH-NonSWH N= 191   Follow up group: 143 students Grade average is 6.3 (in 2008) but in the slide the grade average is 6.00 (in 2008)