...
- Use a grab/release interaction
- State coil proximity on "grab"
- State coil proximity change on release.
- See PhET Faraday's Law - Pick-up Grab and Drop Release Interaction Sketch
Aside:
- The original design was to only fire alerts when certain thresholds were passed. In the dev version alerts are being fired regardless whether a threshold was transitioned
- Pauses between text alert messages makes people think that's all there is.
...
- 3:00 - appears to be having problems figuring out that focusing on the magnet is where you begin.
- looking through the PDOM multiple times, and the Control Area, but can't find where to begin.
- 4:10 - comments about missing something
- 5:30
- Asked what she was looking for, and was told to switch modes from Browse to Forms mode
How often does this situation come up? Should instructions be put somewhere (i.e. in the Help or scene summary?)
- 7:30
- "I'm very confused" - can't seem to figure out how to get to magnet and move it
- 9:40
- Still very confused. Was manipulating the coils and not getting what she wanted. Instructed to go and find the magnet.
- 9:48
- Managed to find the magnet
- Is the text cue not strong enough? Just says: "Bar magnet, move in 4 directions"
- 9:50
- was moving magnet around, got it into the coil, bumped the coil
- Is the bump sound enough?
- 14:20
- Moved magnet around a lot. Bumped it along the edges a lot
- Edge bump alert can be better.
- 16:02
- User slides the magnet
- No other audio cues because far from coil
- 18:02
- Previously asked to turn on field lines
- Now turns them off. Did not explore the PDOM to hear the updated description.
- 18:40
- Asked to describe the sim
- Describes the sim as having a coil, a circuit, magnet, and a voltmeter (although not sure what that is)
- Not sure what the lightbulb is for
- 19:13
- Knows the magnet can go in the coil because it's open on both ends
- 19:40
- Asked how they navigated through the sim
- Was using the arrow keys and getting no where
- Possible the text description did not help either. The description says to use arrow keys but didn't say the context in which to use them.
- Eventually was able to move magnet with WASD keys
- 20:10
- Asked if used any other keys to move the magnet
- Said used the 1 2 3 keys and it slid the magnet, but didn't give any additional description.
- 20:50
- Asked about the descriptions from the screen reader
- Said the descriptions were very specific
- Also said didn't realize that the 1 2 3 keys wasn't sliding just inside the coil
- 21:40
- Asked about the amount of time spent using Browse Mode
- Didn't know they were in Browse mode. Thought they were interacting with the sim.
- 22:25
- Asked what happens to the description as you move the magnet through the coil.
- Says the descriptions tells the position relative to the coil
- But still doesn't know what the voltmeter is for.
- 23:00
- Asked which coil can generate the highest voltage
- Was confused. Didn't really recall there were two coils.
- Thought it was very confusing
- 24:00
- Playing w sim again to try to better understand the two coils
- Moving magnet around.
- Hears the prompt for "coil to left / right" and was able to navigate to it properly.
- 25:15
- Hits the coil and realizes it makes a different sound.
- 25:35
- Asked again which coil generates more voltage
- correctly identifies 4 loop coil generates more because it has a bigger and deeper sound.
- 26:00
- Asked about the polarity
- Responded by saying the magnet goes toward the coils different
- Says the poles repel each other.
- User is not clear about its purpose
- 26:30
- Asked about the sliding
- But said they couldn't tell the difference.
- 28:37
- After playing some more, still couldn't answer the question
- Couldn't tell a difference between the movement at different speeds.
- Instructions for sliding isn't clear.
- doesn't sound like the ticking sounds for magnet movement happens during a slide.
- 29:19
- Asked about the sounds and what they mean.
- Said that when the magnet is inside the coil, there's a "hitting a spring" sound.
- 30:10
- ASked what the clicking sound means
- just says that the magnet is moving
- 31:46
- Has a strong association with the "spring hitting the table" sound.
- 33:10
- associates the "humming sound" with the magnet interacting with the coils.
- 33:35
- Asked what happens when you move the magnet through the coil
- Says there's a "spring" sound.
- 35:51
- Hears the organ sound, but doesn't know what is happening
- 36:45
- Asked what happens when the magnet touches the coil
- Thinks it might be the low humming sound
- 37:40
- After some hints, realizes that the bong sound is when the magnet touches the coil
- 39:17
- What happens when you flip the magnet
- magnet makes a clicking sound and an organ sound
- Sim's capabilities meet my requirements - Agree.
- Using the sim is a frustrating experience - Agree
- Using the sim is easy to use - disagree
- I have to spend too much time correcting things in the sim - disagree
- Sound were helpful - strongly agree
- Sounds were interesting - strongly agree
- Sounds were pleasant - strongly agree
- Sounds were easy to understand - strongly agree
- Sounds were relatable to their ideas - agree
- Easy to match sounds to the meanings - agree
- It was difficult to understand how the sounds changed from one variable to the next - disagree
- Sounds were fun - strongly agree
- It was boring sound - strongly disagree
- Confusing - strongly disagree
- Easy to understand what the sounds mean - agree
- The sim was complex - somewhat disagree
- The sim is easy to use - somewhat disagree
- I need a technical support to use this - somewhat agree
- Functions were well integrated - neutral
- Too much inconsistency in the sim - strongly disagree
- I think others will learn to use this sim quickly - somewhat agree
- I found it awkward to use - strongly disagree
- I felt confident using this sim - somewhat agree
- I needed to learn new things in order to use this sim - strong disagree
- 44:55
- How would you describe this sim to a friend
- "I would describe it as incredibly confusing." "There were a lot of pieces and I didn't know what to do with them until you told me."
- Didn't like how you had to go in and out of Forms mode. "Found that incredibly frustrating."
- 47:30
- Would you see this sim as being helpful for others learning the concepts.
- Said the descriptions were good and perhaps not use as much sounds.
- 48:40
- How would you improve the simulation
- Label the items so they know it is interactable.
- Thought the checkboxes were confusing
- 49:30
- Asked to elaborate on having more descriptions
- Felt that the sounds and descriptions were competing with one another
- Couldn't pay attention to both at the same time.
- Was relying more on the description - they made more sense than the sounds did
- 50:20
- Compared to Friction, how does this one compare?
- Found FL more difficult because of all the pieces and playing with each one individually.
- 51:00
- Asked to comment on overall experience
- Said that once she figured out what was happening, everything became more clear
- Found that 2 coils was more difficult than 1.
- Liked knowing where everything was like "the coil was to the left."
- 51:52
- Asked about not knowing about the voltmeter was
- Guesses that it's somehow measuring the electricity between the magnet and the coil
- Hadn't realized that the sound was associated with the lightbulb or voltmeter
#602
- 0:00 to 10:30
- Exploring sim
- 0:10:33
- Enabled field lines and wondering about whether the field lines changed
- Wondering what they're supposed to be showing.