consumer buying behaviour of branded and non branded jewellery
TA webinar 1 apr 2020 slides-branded - Transforming...
Transcript of TA webinar 1 apr 2020 slides-branded - Transforming...
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1 Apr 2020: 07:00AM UTC/GMT Personalised Tasks and Anonymous Peer Grading Mathias Magdowski Otto von Guericke University Magdeburg, Germany
Justtoletyouknow:Bypar'cipa'nginthewebinaryouacknowledgeandagreethat:Thesessionmayberecorded,includingvoiceandtextchatcommunica'ons(arecordingindicatorisshowninsidethewebinarroomwhenthisisthecase).Wemayreleaserecordingsfreelytothepublicwhichbecomepartofthepublicrecord.Wemayusesessionrecordingsforqualityimprovement,oraspartoffurtherresearchandpublica'ons.
Webinar Series
e-Assessment SIG
WebinarHostsProfessorGeoffCrisp,DeputyVice-Chancellor&Vice-PresidentAcademicUniversityofCanberrag.crisp[at]canberra.edu.auDrMathewHillier,MacquarieUniversitymathew.hillier[at]gmail.com
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Transforming Assessment Webinar:Personalised Tasks and
Anonymous Peer Grading
Mathias MagdowskiChair for Electromagnetic Compatibility
Institute for Medical EngineeringOtto von Guericke University, Magdeburg, Germany
01. April 2020
License: cba CC BY-SA 3.0 (Attribution, ShareAlike)
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Motivation Tasks and Sample Solutions Procedure Evaluation and Discussion
Overview
Why all this?
What does a typical task look like?Topic „Charge and current“Topic „Phasor Diagram“
Procedure
What has come of it?
Personalised Tasks and Peer Grading 2
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Why all this?
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Motivation Tasks and Sample Solutions Procedure Evaluation and Discussion
Survey
What is your background?
1. General education (school/high school)2. Social sciences (university/college)3. Economics (university/college)4. Natural sciences/technology (university/college)5. Electrical engineering
Personalised Tasks and Peer Grading 4
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Motivation Tasks and Sample Solutions Procedure Evaluation and Discussion
Traditional Performance Assessments
Source: https://pixabay.com/de/photos/taschenrechner-notizblock-1687962/
Personalised Tasks and Peer Grading 5
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Motivation Tasks and Sample Solutions Procedure Evaluation and Discussion
Demands in the Working World
Source: https://pixabay.com/de/arbeitsplatz-team-gesch%C3%A4ftstreffen-1245776/
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Motivation Tasks and Sample Solutions Procedure Evaluation and Discussion
Classical E-Learning Tasks
Personalised Tasks and Peer Grading 7
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Motivation Tasks and Sample Solutions Procedure Evaluation and Discussion
Free Handwritten Solution
Personalised Tasks and Peer Grading 8
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Motivation Tasks and Sample Solutions Procedure Evaluation and Discussion
Free Handwritten Solution
Personalised Tasks and Peer Grading 9
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What does a typical task look like?
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Motivation Tasks and Sample Solutions Procedure Evaluation and Discussion
1. Task (same for all)
The displayed time curve shows the current i as a function oftime t. The charge Q(t) is searched for the four sections
1. 0 s t 1 s,2. 1 s < t 2 s,3. 2 s < t 3 s and4. 3 s < t 4 s.
The initial charge is Q(t = 0) = 0.
Calculate the charge Q(t) for each section as a formula byintegrating the current over time and draw the correspondingtime curve.
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Motivation Tasks and Sample Solutions Procedure Evaluation and Discussion
Diagram (for Matriculation Number 123 456)
1 2 3 4
≠4
≠3
≠2
≠1
1
2
3
4
t in s
i(t) in A
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Motivation Tasks and Sample Solutions Procedure Evaluation and Discussion
Diagram (for Matriculation Number 123 457)
1 2 3 4
≠4
≠3
≠2
≠1
1
2
3
4
t in s
i(t) in A
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Motivation Tasks and Sample Solutions Procedure Evaluation and Discussion
Diagram (for Matriculation Number 123 458)
1 2 3 4
≠4
≠3
≠2
≠1
1
2
3
4
t in s
i(t) in A
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Motivation Tasks and Sample Solutions Procedure Evaluation and Discussion
Diagram (for Matriculation Number 123 459)
1 2 3 4
≠4
≠3
≠2
≠1
1
2
3
4
t in s
i(t) in A
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Motivation Tasks and Sample Solutions Procedure Evaluation and Discussion
1. Sample Solution (for Matriculation Number 123 456)
Sectionwise calculation:0 t 1 s: Current in the 1. section (1 point):
i(t) = 1As· t
Charge in the 1. section (1 point):
Q(t) =tZ
0
1As
t0 dt0 + 0 = 1As·
t02
2
�t
0= 0.5
As
t2
Charge at the end of the 1. section (1 point):
Q(1 s) = 0.5 A s
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Motivation Tasks and Sample Solutions Procedure Evaluation and Discussion
1. Sample Solution (for Matriculation Number 123 457)
Sectionwise calculation:0 t 1 s: Current in the 1. section (1 point):
i(t) = �2As· t
Charge in the 1. section (1 point):
Q(t) =tZ
0
�2As
t0 dt0 + 0 = �2As·
t02
2
�t
0= �1
As
t2
Charge at the end of the 1. section (1 point):
Q(1 s) = �1 A s
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Motivation Tasks and Sample Solutions Procedure Evaluation and Discussion
1. Sample Solution (for Matriculation Number 123 458)
Sectionwise calculation:0 t 1 s: Current in the 1. section (1 point):
i(t) = 4As· t
Charge in the 1. section (1 point):
Q(t) =tZ
0
4As
t0 dt0 + 0 = 4As·
t02
2
�t
0= 2
As
t2
Charge at the end of the 1. section (1 point):
Q(1 s) = 2 A s
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Motivation Tasks and Sample Solutions Procedure Evaluation and Discussion
1. Sample Solution (for Matriculation Number 123 459)
Sectionwise calculation:0 t 1 s: Current in the 1. section (1 point):
i(t) = 1As· t
Charge in the 1. section (1 point):
Q(t) =tZ
0
1As
t0 dt0 + 0 = 1As·
t02
2
�t
0= 0.5
As
t2
Charge at the end of the 1. section (1 point):
Q(1 s) = 0.5 A s
Personalised Tasks and Peer Grading 19
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Motivation Tasks and Sample Solutions Procedure Evaluation and Discussion
1. Sample Solution (for Matriculation Number 123 456)
Graphical representation:
0 0,5 1 1,5 2 2,5 3 3,5 4
0
2
4
6
Time, t in s
Cha
rge,
Q(t)
inA
s
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Motivation Tasks and Sample Solutions Procedure Evaluation and Discussion
1. Sample Solution (for Matriculation Number 123 457)
Graphical representation:
0 0,5 1 1,5 2 2,5 3 3,5 4
�1
�0,8
�0,6
�0,4
�0,2
0
Time, t in s
Cha
rge,
Q(t)
inA
s
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Motivation Tasks and Sample Solutions Procedure Evaluation and Discussion
1. Sample Solution (for Matriculation Number 123 458)
Graphical representation:
0 0,5 1 1,5 2 2,5 3 3,5 4
0
1
2
3
Time, t in s
Cha
rge,
Q(t)
inA
s
Personalised Tasks and Peer Grading 22
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Motivation Tasks and Sample Solutions Procedure Evaluation and Discussion
1. Sample Solution (for Matriculation Number 123 459)
Graphical representation:
0 0,5 1 1,5 2 2,5 3 3,5 4�2
0
2
4
Time, t in s
Cha
rge,
Q(t)
inA
s
Personalised Tasks and Peer Grading 23
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Motivation Tasks and Sample Solutions Procedure Evaluation and Discussion
Survey
Can you think of personalised/randomize tasks that canalso be used for your department?
1. yes, immediately, many2. yes, some3. yes, but only after some thought4. no, not likely5. nohow, no way
Personalised Tasks and Peer Grading 24
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Motivation Tasks and Sample Solutions Procedure Evaluation and Discussion
7. Task (same for all)
Starting from the given current i1 or the given voltage u1, pleasedevelop the phasor diagram of all currents and voltages of theshown circuit in the complex number plane step by step.
I Since not only the final result itself (the finished phasordiagram) but also its creation (the actual drawing process)should be documented and evaluated, create a video ofthe drawing of the phasor diagram, either asI screencast when drawing on a laptop or tablet, orI filmed hand, pen and paper using a smartphone or tablet.
I A simple tripod is ideal for this.I Pay attention to the correct orientation of the camera!I Ensure good brightness, contrast and image sharpness!
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Motivation Tasks and Sample Solutions Procedure Evaluation and Discussion
Notes on the Task
I There should be no sound in the video.I To keep the file size of the video small, SD quality (e. g.
with a resolution of 720 ⇥ 480 pixels) is sufficient.I The video should not be longer than 10 min and must not
be larger than 500 MB.I For the identification of the different phasors different
colours are available.I For drawing to scale, the use of squared paper or graph
paper and a protractor and ruler is recommended.I The addition of phasors can be done purely graphically
and should be comprehensible in the phasor diagram.
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Motivation Tasks and Sample Solutions Procedure Evaluation and Discussion
Improvised Tripod for Filming the Handwriting
Figure: Plastic box, spatula, book and household rubberBy Mathias Magdowski, CC BY-SA 4.0, https://mathiasmagdowski.wordpress.com/2019/04/28/
improvisiertes-stativ-zum-abfilmen-einer-schreibenden-hand/
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Motivation Tasks and Sample Solutions Procedure Evaluation and Discussion
Example Video
https://twitter.com/LehrstuhlEMV/status/
1122583408360730632
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Motivation Tasks and Sample Solutions Procedure Evaluation and Discussion
Circuit Schematic (for Matriculation Number 123 456)
C1u1(t)i1(t)
C2u2(t)
L1u3(t)
C3u4(t)
i4(t)
L2u5(t)i5(t)
uq(t)
iq(t)
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Motivation Tasks and Sample Solutions Procedure Evaluation and Discussion
Circuit Schematic (for Matriculation Number 123 457)
R1u1(t)
i1(t)
C1u2(t)
L1u3(t)
i3(t)
R2
i4(t)
C2u5(t)i5(t)
uq(t)
iq(t)
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Motivation Tasks and Sample Solutions Procedure Evaluation and Discussion
Circuit Schematic (for Matriculation Number 123 458)
R1u1(t)i1(t)
R2u2(t)
L1u3(t)
i3(t)
C1u4(t)i4(t)
R3u5(t)
uq(t)
iq(t)
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Motivation Tasks and Sample Solutions Procedure Evaluation and Discussion
Circuit Schematic (for Matriculation Number 123 459)
C1u1(t)i1(t)
C2u2(t)
R1u3(t)
L1u4(t)
i4(t)
C3u5(t)i5(t)
uq(t)
iq(t)
Personalised Tasks and Peer Grading 32
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Motivation Tasks and Sample Solutions Procedure Evaluation and Discussion
7. Sample Solution (for Matriculation Number 123 456)
Ÿ{u}
,ŸÓ
i Ô
⁄ {u} , ⁄Ó
iÔ
i1u1
u2
u3
u4
i4i5
u5uq
Personalised Tasks and Peer Grading 33
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Motivation Tasks and Sample Solutions Procedure Evaluation and Discussion
7. Sample Solution (for Matriculation Number 123 457)
Ÿ{u}
,ŸÓ
i Ô
⁄ {u} , ⁄Ó
iÔ
i1u1u2u3 i3
i4i5 u5uq
Personalised Tasks and Peer Grading 34
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Motivation Tasks and Sample Solutions Procedure Evaluation and Discussion
7. Sample Solution (for Matriculation Number 123 458)
Ÿ{u}
,ŸÓ
i Ô
⁄ {u} , ⁄Ó
iÔ
u1i1
u2u3
i3i4u4
u5uq
Personalised Tasks and Peer Grading 35
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Motivation Tasks and Sample Solutions Procedure Evaluation and Discussion
7. Sample Solution (for Matriculation Number 123 459)
Ÿ{u}
,ŸÓ
i Ô
⁄ {u} , ⁄Ó
iÔ
u1
i1
u2
u3u4
i4i5
u5
uq
Personalised Tasks and Peer Grading 36
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Procedure
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Motivation Tasks and Sample Solutions Procedure Evaluation and Discussion
Creation and Sending of the Tasks
Registration
MAT-LAB
LaTeXMatriculationNo.
Task
Sample SolutionFolder
Personalised Tasks and Peer Grading 38
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Motivation Tasks and Sample Solutions Procedure Evaluation and Discussion
Submission and Distribution of the Solutions
ZIP FileMAT-LAB
FolderSample Solution
Form
Personalised Tasks and Peer Grading 39
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Motivation Tasks and Sample Solutions Procedure Evaluation and Discussion
Mutual Correction and Completion
2 ReviewsSample Sol.
Folder
ZIP File
Score List
MAT-LAB
Sample Solution
Personalised Tasks and Peer Grading 40
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What has come of it?
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Motivation Tasks and Sample Solutions Procedure Evaluation and Discussion
Evaluation of a Typical Cycle
Bare numbers:I Tasks sent to about 200 studentsI Solutions submitted by about 150 studentsI Review carried out by about 140 students
Advantage:I excellent activationI good exam preparation without „teaching to the test“
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Motivation Tasks and Sample Solutions Procedure Evaluation and Discussion
Evaluation of a Typical Cycle
Bare numbers:I Tasks sent to about 200 studentsI Solutions submitted by about 150 studentsI Review carried out by about 140 students
Advantage:I excellent activationI good exam preparation without „teaching to the test“
Personalised Tasks and Peer Grading 42
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Motivation Tasks and Sample Solutions Procedure Evaluation and Discussion
Typical Distribution of the Points
0–2 2–4 4–6 6–8 8–10 10–12 12–14 14–160
20
40
60
Number of points (maximum 16)
Abs
olut
efre
quen
cy
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Motivation Tasks and Sample Solutions Procedure Evaluation and Discussion
Typical Distribution of the Point Deviation
0–1 1–2 2–3 3–4 4–50
20
40
60
Absolute deviation between reviewer 1 and 2
Abs
olut
efre
quen
cy
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Motivation Tasks and Sample Solutions Procedure Evaluation and Discussion
When is it submitted?
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 230
50
100
150
200
Time of day in h
Abs
olut
efre
quen
cy(2
377
into
tal)
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Motivation Tasks and Sample Solutions Procedure Evaluation and Discussion
Survey
What questions come to your mind regarding theevaluation?I . . .
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Motivation Tasks and Sample Solutions Procedure Evaluation and Discussion
Fun Facts
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Motivation Tasks and Sample Solutions Procedure Evaluation and Discussion
Fun Facts
Personalised Tasks and Peer Grading 47
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Motivation Tasks and Sample Solutions Procedure Evaluation and Discussion
Fun Facts
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Motivation Tasks and Sample Solutions Procedure Evaluation and Discussion
Student uploads File Link
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Motivation Tasks and Sample Solutions Procedure Evaluation and Discussion
Poor Image Quality of Submissions/Corrections
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Motivation Tasks and Sample Solutions Procedure Evaluation and Discussion
Credibility of the Corrections
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Motivation Tasks and Sample Solutions Procedure Evaluation and Discussion
Potential for Improvement
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Motivation Tasks and Sample Solutions Procedure Evaluation and Discussion
Potential for Improvement
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Motivation Tasks and Sample Solutions Procedure Evaluation and Discussion
Survey
Do you use a learning management system and if so,which one?
1. Moodle2. Blackboard3. something else4. none
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Motivation Tasks and Sample Solutions Procedure Evaluation and Discussion
Round Table Discussion on Evaluation and FurtherDevelopment
1. Do the personalised additional tasks make you feel wellprepared for the performance assessments and the exam?
2. How do you classify the degree of difficulty of the tasks(also in comparison to the examples in the lecture, theother exercises and the tasks in the performance review orexamination)?
3. How do you assess the clarity and comprehensibility of thetasks/sample solutions?
4. How do you estimate the workload (also in comparison toother courses)?
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Motivation Tasks and Sample Solutions Procedure Evaluation and Discussion
Round Table Discussion on Evaluation and FurtherDevelopment
5. How do you assess the fairness of the mutual evaluation?6. Do you find the assistance (detail and precision of the
sample solution, listing of typical errors) in the mutualevaluation sufficient?
7. Do you feel well enough informed about the procedure(processing time, submission modalities, deadlines, etc.)?
8. How do you evaluate the technical handling (sending thetasks by e-mail, submission via the learning managementsystem Moodle)?
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Motivation Tasks and Sample Solutions Procedure Evaluation and Discussion
Thank you very much for your attention!
Are there any questions?
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Webinar Series
Webinar Session feedback With thanks from your hosts Professor Geoff Crisp, Deputy Vice-Chancellor & Vice-President Academic University of Canberra g.crisp[at]canberra.edu.au Dr Mathew Hillier, Macquarie University mathew.hillier[at]gmail.com Recording available http://transformingassessment.com
e-Assessment SIG