This webinar discusses using personalized tasks and anonymous peer grading for assessment. It begins with an overview and motivation for this approach. Typical tasks are then described, which include a problem statement and individualized diagrams for each student. Sample solutions are provided as examples. The procedure involves students receiving individualized tasks, submitting solutions, and reviewing peers' work anonymously. Evaluation of cycles found high participation rates and that most students scored well within the typical range. Distribution graphs demonstrated the results and when submissions were made. The webinar concluded with a discussion of evaluation questions and some final "fun facts".

1. Transforming Assessment Webinar:
Personalised Tasks and
Anonymous Peer Grading
Mathias Magdowski
Chair for Electromagnetic Compatibility
Institute for Medical Engineering
Otto von Guericke University, Magdeburg, Germany
01. April 2020
License: cba CC BY-SA 3.0 (Attribution, ShareAlike)

2. 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

3. Why all this?

4. 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

5. 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

6. 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/
Personalised Tasks and Peer Grading 6

7. Motivation Tasks and Sample Solutions Procedure Evaluation and Discussion
Classical E-Learning Tasks
Personalised Tasks and Peer Grading 7

8. Motivation Tasks and Sample Solutions Procedure Evaluation and Discussion
Free Handwritten Solution
Personalised Tasks and Peer Grading 8

9. Motivation Tasks and Sample Solutions Procedure Evaluation and Discussion
Free Handwritten Solution
Personalised Tasks and Peer Grading 9

10. What does a typical task look like?

11. 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 of
time 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 and
4. 3 s < t ≤ 4 s.
The initial charge is Q(t = 0) = 0.
Calculate the charge Q(t) for each section as a formula by
integrating the current over time and draw the corresponding
time curve.
Personalised Tasks and Peer Grading 11

12. 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
Personalised Tasks and Peer Grading 12

13. 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
Personalised Tasks and Peer Grading 13

14. 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
Personalised Tasks and Peer Grading 14

15. 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
Personalised Tasks and Peer Grading 15

16. 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) = 1
A
s
· t
Charge in the 1. section (1 point):
Q(t) =
t
0
1
A
s
t dt + 0 = 1
A
s
·
t 2
2
t
0
= 0.5
A
s
t2
Charge at the end of the 1. section (1 point):
Q(1 s) = 0.5 A s
Personalised Tasks and Peer Grading 16

17. 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) = −2
A
s
· t
Charge in the 1. section (1 point):
Q(t) =
t
0
−2
A
s
t dt + 0 = −2
A
s
·
t 2
2
t
0
= −1
A
s
t2
Charge at the end of the 1. section (1 point):
Q(1 s) = −1 A s
Personalised Tasks and Peer Grading 17

18. 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) = 4
A
s
· t
Charge in the 1. section (1 point):
Q(t) =
t
0
4
A
s
t dt + 0 = 4
A
s
·
t 2
2
t
0
= 2
A
s
t2
Charge at the end of the 1. section (1 point):
Q(1 s) = 2 A s
Personalised Tasks and Peer Grading 18

19. 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) = 1
A
s
· t
Charge in the 1. section (1 point):
Q(t) =
t
0
1
A
s
t dt + 0 = 1
A
s
·
t 2
2
t
0
= 0.5
A
s
t2
Charge at the end of the 1. section (1 point):
Q(1 s) = 0.5 A s
Personalised Tasks and Peer Grading 19

20. 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
Charge,Q(t)inAs
Personalised Tasks and Peer Grading 20

21. 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
Charge,Q(t)inAs
Personalised Tasks and Peer Grading 21

22. 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
Charge,Q(t)inAs
Personalised Tasks and Peer Grading 22

23. 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
Charge,Q(t)inAs
Personalised Tasks and Peer Grading 23

24. Motivation Tasks and Sample Solutions Procedure Evaluation and Discussion
Survey
Can you think of personalised/randomize tasks that can
also be used for your department?
1. yes, immediately, many
2. yes, some
3. yes, but only after some thought
4. no, not likely
5. nohow, no way
Personalised Tasks and Peer Grading 24

25. Motivation Tasks and Sample Solutions Procedure Evaluation and Discussion
7. Task (same for all)
Starting from the given current ˆi1 or the given voltage ˆu1, please
develop the phasor diagram of all currents and voltages of the
shown circuit in the complex number plane step by step.
Since not only the final result itself (the finished phasor
diagram) but also its creation (the actual drawing process)
should be documented and evaluated, create a video of
the drawing of the phasor diagram, either as
screencast when drawing on a laptop or tablet, or
filmed hand, pen and paper using a smartphone or tablet.
A simple tripod is ideal for this.
Pay attention to the correct orientation of the camera!
Ensure good brightness, contrast and image sharpness!
Personalised Tasks and Peer Grading 25

26. Motivation Tasks and Sample Solutions Procedure Evaluation and Discussion
Notes on the Task
There should be no sound in the video.
To keep the file size of the video small, SD quality (e. g.
with a resolution of 720 × 480 pixels) is sufficient.
The video should not be longer than 10 min and must not
be larger than 500 MB.
For the identification of the different phasors different
colours are available.
For drawing to scale, the use of squared paper or graph
paper and a protractor and ruler is recommended.
The addition of phasors can be done purely graphically
and should be comprehensible in the phasor diagram.
Personalised Tasks and Peer Grading 26

27. Motivation Tasks and Sample Solutions Procedure Evaluation and Discussion
Improvised Tripod for Filming the Handwriting
Figure: Plastic box, spatula, book and household rubber
By Mathias Magdowski, CC BY-SA 4.0, https://mathiasmagdowski.wordpress.com/2019/04/28/
improvisiertes-stativ-zum-abfilmen-einer-schreibenden-hand/
Personalised Tasks and Peer Grading 27

28. Motivation Tasks and Sample Solutions Procedure Evaluation and Discussion
Example Video
https://twitter.com/LehrstuhlEMV/status/
1122583408360730632
Personalised Tasks and Peer Grading 28

29. 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)
Personalised Tasks and Peer Grading 29

30. 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)
Personalised Tasks and Peer Grading 30

31. 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)
Personalised Tasks and Peer Grading 31

32. 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

33. Motivation Tasks and Sample Solutions Procedure Evaluation and Discussion
7. Sample Solution (for Matriculation Number 123 456)
{ˆu},ˆi
{ˆu} , ˆi
ˆi1
ˆu1
ˆu2
ˆu3
ˆu4
ˆi4
ˆi5
ˆu5
ˆuq
Personalised Tasks and Peer Grading 33

34. Motivation Tasks and Sample Solutions Procedure Evaluation and Discussion
7. Sample Solution (for Matriculation Number 123 457)
{ˆu},ˆi
{ˆu} , ˆi
ˆi1ˆu1
ˆu2ˆu3
ˆi3
ˆi4
ˆi5 ˆu5
ˆuq
Personalised Tasks and Peer Grading 34

35. Motivation Tasks and Sample Solutions Procedure Evaluation and Discussion
7. Sample Solution (for Matriculation Number 123 458)
{ˆu},ˆi
{ˆu} , ˆi
ˆu1ˆi1
ˆu2ˆu3
ˆi3
ˆi4
ˆu4
ˆu5ˆuq
Personalised Tasks and Peer Grading 35

36. Motivation Tasks and Sample Solutions Procedure Evaluation and Discussion
7. Sample Solution (for Matriculation Number 123 459)
{ˆu},ˆi
{ˆu} , ˆi
ˆu1
ˆi1
ˆu2
ˆu3ˆu4
ˆi4
ˆi5
ˆu5
ˆuq
Personalised Tasks and Peer Grading 36

37. Procedure

38. Motivation Tasks and Sample Solutions Procedure Evaluation and Discussion
Creation and Sending of the Tasks
Registration
MAT-
LAB
LaTeX
Matriculation
No.
PDF
Task
Sample Solution
Folder
Personalised Tasks and Peer Grading 38

39. Motivation Tasks and Sample Solutions Procedure Evaluation and Discussion
Submission and Distribution of the Solutions
ZIP File
MAT-
LAB
Folder
Sample Solution
Form
Personalised Tasks and Peer Grading 39

40. Motivation Tasks and Sample Solutions Procedure Evaluation and Discussion
Mutual Correction and Completion
2 Reviews
Sample Sol.
Folder
ZIP File
Score
List
MAT-
LAB
Sample Solution
Personalised Tasks and Peer Grading 40

41. What has come of it?

42. Motivation Tasks and Sample Solutions Procedure Evaluation and Discussion
Evaluation of a Typical Cycle
Bare numbers:
Tasks sent to about 200 students
Solutions submitted by about 150 students
Review carried out by about 140 students
Personalised Tasks and Peer Grading 42

43. Motivation Tasks and Sample Solutions Procedure Evaluation and Discussion
Evaluation of a Typical Cycle
Bare numbers:
Tasks sent to about 200 students
Solutions submitted by about 150 students
Review carried out by about 140 students
Advantage:
excellent activation
good exam preparation without „teaching to the test“
Personalised Tasks and Peer Grading 42

44. 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 14–16
0
20
40
60
Number of points (maximum 16)
Absolutefrequency
Personalised Tasks and Peer Grading 43

45. Motivation Tasks and Sample Solutions Procedure Evaluation and Discussion
Typical Distribution of the Point Deviation
0–1 1–2 2–3 3–4 4–5
0
20
40
60
Absolute deviation between reviewer 1 and 2
Absolutefrequency
Personalised Tasks and Peer Grading 44

46. Motivation Tasks and Sample Solutions Procedure Evaluation and Discussion
When is it submitted?
0 1 2 3 4 5 6 7 8 9 1011121314151617181920212223
0
50
100
150
200
Time of day in h
Absolutefrequency(2377intotal)
Personalised Tasks and Peer Grading 45

47. Motivation Tasks and Sample Solutions Procedure Evaluation and Discussion
Survey
What questions come to your mind regarding the
evaluation?
. . .
Personalised Tasks and Peer Grading 46

48. Motivation Tasks and Sample Solutions Procedure Evaluation and Discussion
Fun Facts
Personalised Tasks and Peer Grading 47

49. Motivation Tasks and Sample Solutions Procedure Evaluation and Discussion
Fun Facts
Personalised Tasks and Peer Grading 47

50. Motivation Tasks and Sample Solutions Procedure Evaluation and Discussion
Fun Facts
Personalised Tasks and Peer Grading 47

51. Motivation Tasks and Sample Solutions Procedure Evaluation and Discussion
Student uploads File Link
Personalised Tasks and Peer Grading 48

52. Motivation Tasks and Sample Solutions Procedure Evaluation and Discussion
Poor Image Quality of Submissions/Corrections
Personalised Tasks and Peer Grading 49

53. Motivation Tasks and Sample Solutions Procedure Evaluation and Discussion
Credibility of the Corrections
Personalised Tasks and Peer Grading 50

54. Motivation Tasks and Sample Solutions Procedure Evaluation and Discussion
Potential for Improvement
Personalised Tasks and Peer Grading 51

55. Motivation Tasks and Sample Solutions Procedure Evaluation and Discussion
Potential for Improvement
Personalised Tasks and Peer Grading 52

56. Motivation Tasks and Sample Solutions Procedure Evaluation and Discussion
Survey
Do you use a learning management system and if so,
which one?
1. Moodle
2. Blackboard
3. something else
4. none
Personalised Tasks and Peer Grading 53

57. Motivation Tasks and Sample Solutions Procedure Evaluation and Discussion
Round Table Discussion on Evaluation and Further
Development
1. Do the personalised additional tasks make you feel well
prepared 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, the
other exercises and the tasks in the performance review or
examination)?
3. How do you assess the clarity and comprehensibility of the
tasks/sample solutions?
4. How do you estimate the workload (also in comparison to
other courses)?
Personalised Tasks and Peer Grading 54

58. Motivation Tasks and Sample Solutions Procedure Evaluation and Discussion
Round Table Discussion on Evaluation and Further
Development
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 mutual
evaluation 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 the
tasks by e-mail, submission via the learning management
system Moodle)?
Personalised Tasks and Peer Grading 55

59. Motivation Tasks and Sample Solutions Procedure Evaluation and Discussion
Thank you very much for your attention!
Are there any questions?
Personalised Tasks and Peer Grading 56