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lecture_improvements.txt
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Lecture improvements still to do...
===================================
2024-25
-------
## Lecture 1
- overran slightly, but only ~1 min
- Malteaser demo with larger number of polos worked well, just remember to dim the lights
- 3D octahedra too dark to show up, even with lights dimmed
- Ideally, this needs 3D octahedra and tetrahedra that can attach to each other, demonstrating the packing and hole positions
## Lecture 2
- Overran, and needed to cover shear defects in lecture 3
- First KV question is very easy
- Maybe include a second of intermediate difficulty before getting to the Mg2SiO4 question
- Shear phases are difficult to visualise (and don't easily fit in lecture 2 timing)
- Can they be incorporated into lecture 3 or 6?
## Lecture 3
- Ran ~4 minutes short, even with plenty of time devoted to defect quiz
- It would be helpful to derive K-V equations for (some of) the defects in the quiz
- Should shear phases be replaced by something else?
- !!! Use the extra time to mention the assessment !!!
## Lecture 4
- Ran slightly short (~3 mins? difficult to judge based on UG announcement at start)
- Remember to bring ANSWERS for battery capacity question!
- Balloon demonstration for conversion vs intercalation electrodes went well, but does it clarify anything?!
- Some parts may be too simple; need to focus more on structure-property analysis
2023-24
-------
**Lecture 1**
- Slightly rushed towards the end (although tried to end at 12:50 rather than 13:00). Needed to cover final two slides in lecture 2
- Demo with polos/malteasers collapsed after layer 2
- 3D printed octahedra nicely show face sharing, but black colour does not come out on doc cam
- Too much time spent on intro, not enough on hole filling
** Lecture 2**
- Ran to time (but only just)
- Need to be clearer on Quiz 2, i.e. why an interstitial proton does not form
- Are there examples of interstitial protons in oxides, or do they always associate with an O2-?
- Need to work through Kroger-Vink notation more slowly
- Defect ordering and non-stoichiometry felt a bit like an after-thought...
** Lecture 3**
** Lecture 4**
[- Demonstration of conversion vs intercalation electrodes using balloons + volunteers]
** Lecture 5 **
[- Demonstration of impedance of capacitor/resistor using people running]
- Ran out of time to cover structural aspects of ferroelectric
- Perhaps took too long on impedance question
- "Circuit" demonstration well-received, but not sure that covered the most difficult aspects
- Might be difficult to get enough volunteers; male-dominated
- Need to highlight the distinction between individual frequency-time measurement and series of frequencies on plots
-
** Lecture 6**
[- Demonstration with sheep and cows as defect clusters]
- Perfect timing to cover final slides of L5 and all of L6 (i.e. too short)
- First part of examples/definitions is very boring!
- Is there opportunity to add a quiz?
- How to focus on the structure-property behaviour, rather than engineering controls?
- Sheep farming demo works quite well, although slow to modify on a document camera
- Would be good to clarify how brownmillerite-perovskite transition looks (jmol?)
# General comments
- Remove slide transitions when generating PDF (can this be automated with git commits?)
- Mentimeter quizzes don't automatically update
- This can be useful to hide other student's answers...
- Is there a way to link the Mentimeter number with the previous slide contents?
- Otherwise there is no way to start the vote without showing the answers
- Multiple people told me in person how much they enjoyed the lectures!
- Interactive demos definitely make it more fun
## Comments from Assessment
- Highlight that radius ratios don't work for fluorite materials (and others); emphasise that predicting structures is tough!
2022-23
-------
**Lecture 1**
- Perfect timing
- Needs more time devoted to explaining close packing and holes
- Perspex balls in a box works well in small groups, but didn't appear well on the visualiser
- Better animation/interactive demo?
- Consider removing spacegroup references to avoid confusion?
** Lecture 2**
- Overran, but probably due to close packing demo at the start
- Quiz 2 needs quite a lot of time to complete
- Make sure to be clear on the answer in advance!
- Can (should) it be made clear why Ag interstitial in AgCl is 4-coordinate?
- IS defect ordering section required?
** Lecture 3**
- Overran slightly due to finishing off Lecture 2 (defect ordering)
- Too much time discussing conduction pathways
- Need a way to distribute 'good' techniques without giving the answers away
** Lecture 4**
- Overran by almost 5 mins; too much material
- Boring lecture with lots of examples
- Can I add a demonstration/interactive thing?
- Too many examples/definitions; can anything be dropped?
- Galvanostats still not useful
** Lecture 5**
- Consider adding interactive 3D plot of Z',Z" and f to make relationship clear
- Conceptual understanding of capacitance phase shift remains tough
-
** Lecture 6**
- Well-timed
- Needs some degree of interactivity
- Ordering of defects in class?
- Quite dry - can the key points be got across without so many examples?!
**Tutorial**
- Too many questions
- Students get slowed down by the number crunching of Q2; could we remove/simplify the charge storage calculation?
- Although interesting, the oxidation/reduction question could be reduced in size/removed (not totally relevant?)
- Leave more time to go through structure visualisation/packing hunting. Can students do this in the tutorial themselves with support?
- Tutorial Qs do not fully reflect the assessment questions in places
- Should they?
- Can more guidance be given around the assessment?
**General Improvements**
- Many students struggle with visualising close-packing. Make more use of the PhysChem ball models?
- Wide concern over impedance spectroscopy; should it be chopped?!
- Add in the observation that every octahedral hole shares its faces with tetrahedral holes for CCP, and show same
idea for HCP
- Demonstrate partially-occupied sites more completely, perhaps using fuel cell or battery lecture examples?
2021-22
-------
- Lecture 2 overran; either too much content or too long spent on tasks
- Lecture 4 too packed; not enough time to consider galvanostatic measurements and meaning
- Maybe drop galvanostats altogether?!
- Too much maths/physics in lecture 5
- Direct more towards the chemistry and applications, with less number-crunching
- Put more chemistry in lecture 6?
- Tutorial is too long for 1 hour (esp. PGT); remove Q3 next time
Comments
- Mentimeters appreciated by students, but don't spend too long
- Interactive structures are good
- Can I customise the right-click menu to allow easy polyhedra and bonds on/off?
2020-21
=======
- Lecture 2:
- Slide 4; add better arrows
- Lecture 3:
- Better arrows on electrolytes slide