Run #762

done rubric v1 session 79564907 gemini-3.7-flash 2026-09-21 02:21

Session in Sessions →

What the student sent the question as it arrived, then each reading of it

OCR of the image GOOGLE_VISION

Date.. Page.. il पेट्रोल में क्या - क्या मिला होता है ?

The phone's own reading, which differs:

Dato.... Page... ट्ाल मैं बय - दया মল্লा ता है?

The audit's reading of the question, which is what the Product AI judged against:

पेट्रोल में क्या - क्या मिला होता है ?

Audit's summary: The student asked what is mixed in petrol. The tutor explained that petrol is a complex mixture of hydrocarbons obtained from the fractional distillation of crude oil. The tutor also mentioned that ethanol is mixed in petrol up to 20% to reduce pollution, which is called E-20 fuel. The tutor wrote the definition in Hindi.

Transcript 721 characters · 350 stripped

Read it no speaker labels — tutor and student run together

Hello Ranveer Prasad, Good afternoon, Welcome to the Filo. Petrol में क्या क्या मिला होता है? यह आपको जानना है न? जी देख Petrol is crude oil. When it is oxygenated, it is called digitalization. Hydrocarbon is a liquid mixture. The same is true for different types of fuel. Ethanol is mixed and given. According to the rules of the Indian government, to reduce the pollution, ethanol is added up to 20% which is called E-20 fuel. Do you understand? Do I have to write the definition of this? Yes. Do you have to write the definition of this? 12. Kacche Tel प्रभाजी आसवन प्रभाजी आसवन से मिलने वाले The word hydrocarbon is a complex and complex complex mixture of hydrocarbon. Thank you for watching. Thank you for watching.

What the student sent the question as it arrived, then each reading of it

OCR of the image GOOGLE_VISION

Date.. Page.. il पेट्रोल में क्या - क्या मिला होता है ?

The phone's own reading, which differs:

Dato.... Page... ट्ाल मैं बय - दया মল্লा ता है?

The audit's reading of the question, which is what the Product AI judged against:

पेट्रोल में क्या - क्या मिला होता है ?

Transcript 721 characters · 350 stripped

Read it no speaker labels — tutor and student run together

Review team

no_issue

Product AI

nothing found

teaching Yes · mistakes No · satisfactory Yes

Each verdict takes your own. Yours is stored against the stack's, so “where is it wrong most often” is a question with an answer.

Work is the right way up Not applicable to a board session

seen
Writing is legible at video size The handwritten text is neat and clear against the dark canvas.

In Frames 6 to 8, the tutor writes clearly in Hindi script using high-contrast pink ink on a dark background.

seen · 95% confident
Your view
The work fills the frame Not applicable to a board session

seen
Nothing distracting in shot Not applicable to a board session

seen
The student's problem is established The question is clearly captured and visible from the start.

Frames 1–4 clearly show the handwritten question in the student's notebook: 'पेट्रोल में क्या - क्या मिला होता है?'.

seen · 95% confident
Your view
Work proceeds in followable steps The written answer develops logically in sequential order.

In Frames 6, 7, and 8, the explanation is written line by line without overwriting or disorganization.

seen · 90% confident
Your view
It reaches an answer The written definition stops mid-word in the final frame.

In Frame 8, the board ends mid-word at 'हाइड्रो' while the transcript abruptly closes with closing remarks.

seen · 85% confident
Your view
Something was actually written board went from 29.91% to a peak of 57.03% covered (+27.13 points), ending at 14.55%

measured
Your view
The concept is named before the working The tutor clearly names the relevant chemical concepts.

The transcript shows the tutor stating concepts such as crude oil fractional distillation ('कच्चे तेल प्रभाजी आसवन') and hydrocarbon mixture ('Hydrocarbon is a liquid mixture').

heard · 90% confident
Your view
Explained rather than jumped to the answer The tutor verbally explains the components before writing down notes.

Frames 1–5 contain no whiteboard writing while the tutor verbally explains crude oil refining, hydrocarbons, and ethanol blending before beginning to write in Frame 6.

heard · 90% confident
Your view
Solved step by step, not in one leap The explanation progresses step by step from origin to additives.

The tutor methodically explains fractional distillation of crude oil, hydrocarbon formation, and ethanol additives, gradually writing down the summary across Frames 6–8.

heard · 90% confident
Your view
The session opens properly The tutor provides a polite greeting and confirms the question.

The transcript begins with: 'Hello Ranveer Prasad, Good afternoon, Welcome to the Filo. Petrol में क्या क्या मिला होता है? यह आपको जानना है न?'.

heard · 95% confident
Your view
No long dead air 1 gaps over 6.0s, 6s total (2% of the session), longest 6s

Silence is below -35.0dB — a crude measure on a phone microphone, so treat a low count as weak evidence rather than proof the tutor was talking.

measured
Your view

Observations judged, but not counted as the lab objecting

The camera holds still Not applicable to a board session

Not counted: Measured over 183 known-bad and 29 known-good camera sessions (2026-09-21): raised on 87% of the bad and 86% of the good, and the motion distributions are the same shape — median frame difference 25 on the bad set, 27 on the good. No threshold on this number separates them, so it is reported and not counted.

measured
Exposure is usable Not applicable to a board session

Not counted: Same two sets: it raised 6 of 183 known-bad and 2 of 29 known-good sessions. Both too few to mean anything, and the brightness distributions overlap almost exactly. The earlier reading that it 'fires more on clean sessions' was two sessions out of twenty-nine — noise, not an inverted rule.

measured
Understanding of the concept is checked No conceptual check question was asked to test understanding.

The tutor only asks procedural/understanding checks ('Do you understand?', 'Do I have to write the definition of this?') rather than a conceptual question requiring the student to think.

Not counted: Raised on 87% of known-bad and 80% of known-good sessions. The criterion is honest about why in its own `why`: the transcript has no speaker labels, so a real check and a rhetorical 'ok?' are often indistinguishable, and the bar ends up one almost no session clears. Still judged and shown, because reading it beside a recording is how it gets better.

heard
Your view

What the model returned verbatim

{
  "findings": [
    {
      "key": "legibility",
      "verdict": "ok",
      "headline": "The handwritten text is neat and clear against the dark canvas.",
      "evidence": "In Frames 6 to 8, the tutor writes clearly in Hindi script using high-contrast pink ink on a dark background.",
      "confidence": 0.95
    },
    {
      "key": "question_captured",
      "verdict": "ok",
      "headline": "The question is clearly captured and visible from the start.",
      "evidence": "Frames 1–4 clearly show the handwritten question in the student's notebook: 'पेट्रोल में क्या - क्या मिला होता है?'.",
      "confidence": 0.95
    },
    {
      "key": "structure",
      "verdict": "ok",
      "headline": "The written answer develops logically in sequential order.",
      "evidence": "In Frames 6, 7, and 8, the explanation is written line by line without overwriting or disorganization.",
      "confidence": 0.9
    },
    {
      "key": "completion",
      "verdict": "weak",
      "headline": "The written definition stops mid-word in the final frame.",
      "evidence": "In Frame 8, the board ends mid-word at 'हाइड्रो' while the transcript abruptly closes with closing remarks.",
      "confidence": 0.85
    },
    {
      "key": "concept_named",
      "verdict": "ok",
      "headline": "The tutor clearly names the relevant chemical concepts.",
      "evidence": "The transcript shows the tutor stating concepts such as crude oil fractional distillation ('कच्चे तेल प्रभाजी आसवन') and hydrocarbon mixture ('Hydrocarbon is a liquid mixture').",
      "confidence": 0.9
    },
    {
      "key": "explained_before_solving",
      "verdict": "ok",
      "headline": "The tutor verbally explains the components before writing down notes.",
      "evidence": "Frames 1–5 contain no whiteboard writing while the tutor verbally explains crude oil refining, hydrocarbons, and ethanol blending before beginning to write in Frame 6.",
      "confidence": 0.9
    },
    {
      "key": "concept_checked",
      "verdict": "weak",
      "headline": "No conceptual check question was asked to test understanding.",
      "evidence": "The tutor only asks procedural/understanding checks ('Do you understand?', 'Do I have to write the definition of this?') rather than a conceptual question requiring the student to think.",
      "confidence": 0.9
    },
    {
      "key": "step_by_step",
      "verdict": "ok",
      "headline": "The explanation progresses step by step from origin to additives.",
      "evidence": "The tutor methodically explains fractional distillation of crude oil, hydrocarbon formation, and ethanol additives, gradually writing down the summary across Frames 6–8.",
      "confidence": 0.9
    },
    {
      "key": "opening",
      "verdict": "ok",
      "headline": "The tutor provides a polite greeting and confirms the question.",
      "evidence": "The transcript begins with: 'Hello Ranveer Prasad, Good afternoon, Welcome to the Filo. Petrol में क्या क्या मिला होता है? यह आपको जानना है न?'.",
      "confidence": 0.95
    }
  ]
}

Duration	323s (5.4 min)
Video	1280×800 @ 10.0fps
Audio track	yes
Shot changes
Dead air	1 gaps ≥6.0s · 6.5s total · longest 6.5s
Luma	avg 78.1 · min · max
Medium	board 67.0% flat background
Content written	29.91% → 14.55% (+27.13)
Transcript	721 characters of speech
Frames	8

Run #762

The recording

What the student sent the question as it arrived, then each reading of it

Transcript 721 characters · 350 stripped

What the student sent the question as it arrived, then each reading of it

Transcript 721 characters · 350 stripped

Review team

Product AI

Measured

What the model returned verbatim

Frames in order, one every ~40s