Run #760

done rubric v1 session 79225239 gemini-3.7-flash 2026-09-21 02:21

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

Typed by the student

Direct connect with favourite tutor

Also sent during the session: attachment

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

A.P. 4, 2, 0, -2 के अगले चार पद लिखो।

Audit's summary: The student asked a question about finding the next four terms of an AP: 4, 2, 0, -2. The tutor explained the concept of AP (Arithmetic Progression) in Hindi as 'समांतर श्रेणी'. The tutor defined AP as a series with equal intervals between consecutive terms and showed the general form of an AP. The tutor also explained how to find the common difference 'd' and labeled it as 'सार्व अंतर'. The student indicated they understood the explanation of 'd'.

Transcript 1,319 characters · 250 stripped

Read it no speaker labels — tutor and student run together

Hello, Ansika Rao, very good evening. Yes, Ansika, tell me what is happening? Okay sir, I will ask you a question. Yes, Ansika. Yes sir, I will ask you a question. Your voice is not coming, Ansika. Say it a little louder. Yes sir, I will ask you a question. Yes, ask a question. Did you send your question? Yes sir, I sent it. Okay, I will check it. Thank you for watching. Sir, I don't know this question at all. Please explain it to me from the beginning. Yes, yes, sure. See, what does AP mean? Arithmetic progression. What does arithmetic progression mean? What is it called? Samanttar Shrini. AP means Samanttar Shrini. Now Samanttar... What is Samanttar Shrini? Yes, I am telling you. I will tell you everything. Samantar Srinikam means that a series of lines with equal intervals between the lines of the lines is called AP or Samantar Srinikam. Now you will see the difference between these two lines. What is the difference between any of the two lines that I have said continuously? Hello, Hello, Ansika, आप सुन पा रही हैं? Sir, मुझे आपका समझ नहीं आ रहा, आप शुरू से समझा दीजिये. देखो, मैं क्या कह रहा हूँ, समनांतर शेणी का मतलब यह हो गया, कि किती भी लगतार दो पदों के बीच का अंतर, क्या है? Now I understood. And what is D? Where D is? Sarvayantar. What is it? Sarvayantar. Tell me. Is it clear? Or not? Tell me.

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

Typed by the student

Direct connect with favourite tutor

Also sent during the session: attachment

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

A.P. 4, 2, 0, -2 के अगले चार पद लिखो।

Transcript 1,319 characters · 250 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 Orientation is upright at 0 degrees.

Writing and question image are displayed upright across all frames (Frames 1-9).

seen · 100% confident
Your view
Writing is legible at video size Board writing is clean, large, and legible.

Handwritten math notation in Hindi and English is clearly visible against the dark canvas (Frames 5, 6, 7, 9).

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 Question image is clearly visible from the beginning.

The AP question '4, 2, 0, -2...' is visible in Frames 1, 2, 3, and 6.

seen · 100% confident
Your view
Work proceeds in followable steps Explanations progress linearly with clear notes.

The tutor introduces general AP terms, common difference (Frame 5-6), and then the nth term formula (Frame 9).

seen · 90% confident
Your view
It reaches an answer The problem is not solved by the end of the session.

Frame 9 stops at the general formula tn = a + (n-1)d without calculating the requested next 4 terms of the sequence.

seen · 95% confident
Your view
Something was actually written board went from 8.52% to a peak of 20.5% covered (+11.98 points), ending at 1.68%

measured
Your view
The concept is named before the working The tutor explicitly introduces Arithmetic Progression (AP).

The tutor states: 'See, what does AP mean? Arithmetic progression. What does arithmetic progression mean? What is it called? Samanttar Shrini.'

heard · 95% confident
Your view
Explained rather than jumped to the answer The tutor dedicates the session to explaining foundational concepts before working on the problem.

Throughout Frames 4-9 and the transcript, the tutor explains the definition of AP, common difference, and general terms before solving the specific question.

heard · 90% confident
Your view
Solved step by step, not in one leap Concepts are built up in parts, but the specific question is not stepped through.

The tutor develops the concept step by step (Frames 5-9), but does not complete the steps to find the next 4 terms of the given AP.

heard · 85% confident
Your view
The session opens properly The tutor warmly greets the student and confirms the question.

Transcript opens with 'Hello, Ansika Rao, very good evening. Yes, Ansika, tell me what is happening?' and confirms receipt of the question.

heard · 100% confident
Your view
No long dead air 2 gaps over 6.0s, 32s total (11% of the session), longest 25s

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 Concept checks are mostly rhetorical or followed up by the tutor answering themselves.

The tutor asks 'And what is D? Where D is? Sarvayantar. What is it? Sarvayantar. Tell me. Is it clear? Or not? Tell me.' without waiting for deep conceptual reasoning from the student.

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": "orientation",
      "verdict": "ok",
      "headline": "Orientation is upright at 0 degrees.",
      "evidence": "Writing and question image are displayed upright across all frames (Frames 1-9).",
      "confidence": 1.0
    },
    {
      "key": "legibility",
      "verdict": "ok",
      "headline": "Board writing is clean, large, and legible.",
      "evidence": "Handwritten math notation in Hindi and English is clearly visible against the dark canvas (Frames 5, 6, 7, 9).",
      "confidence": 0.95
    },
    {
      "key": "question_captured",
      "verdict": "ok",
      "headline": "Question image is clearly visible from the beginning.",
      "evidence": "The AP question '4, 2, 0, -2...' is visible in Frames 1, 2, 3, and 6.",
      "confidence": 1.0
    },
    {
      "key": "structure",
      "verdict": "ok",
      "headline": "Explanations progress linearly with clear notes.",
      "evidence": "The tutor introduces general AP terms, common difference (Frame 5-6), and then the nth term formula (Frame 9).",
      "confidence": 0.9
    },
    {
      "key": "concept_named",
      "verdict": "ok",
      "headline": "The tutor explicitly introduces Arithmetic Progression (AP).",
      "evidence": "The tutor states: 'See, what does AP mean? Arithmetic progression. What does arithmetic progression mean? What is it called? Samanttar Shrini.'",
      "confidence": 0.95
    },
    {
      "key": "explained_before_solving",
      "verdict": "ok",
      "headline": "The tutor dedicates the session to explaining foundational concepts before working on the problem.",
      "evidence": "Throughout Frames 4-9 and the transcript, the tutor explains the definition of AP, common difference, and general terms before solving the specific question.",
      "confidence": 0.9
    },
    {
      "key": "concept_checked",
      "verdict": "weak",
      "headline": "Concept checks are mostly rhetorical or followed up by the tutor answering themselves.",
      "evidence": "The tutor asks 'And what is D? Where D is? Sarvayantar. What is it? Sarvayantar. Tell me. Is it clear? Or not? Tell me.' without waiting for deep conceptual reasoning from the student.",
      "confidence": 0.85
    },
    {
      "key": "step_by_step",
      "verdict": "weak",
      "headline": "Concepts are built up in parts, but the specific question is not stepped through.",
      "evidence": "The tutor develops the concept step by step (Frames 5-9), but does not complete the steps to find the next 4 terms of the given AP.",
      "confidence": 0.85
    },
    {
      "key": "completion",
      "verdict": "bad",
      "headline": "The problem is not solved by the end of the session.",
      "evidence": "Frame 9 stops at the general formula tn = a + (n-1)d without calculating the requested next 4 terms of the sequence.",
      "confidence": 0.95
    },
    {
      "key": "opening",
      "verdict": "ok",
      "headline": "The tutor warmly greets the student and confirms the question.",
      "evidence": "Transcript opens with 'Hello, Ansika Rao, very good evening. Yes, Ansika, tell me what is happening?' and confirms receipt of the question.",
      "confidence": 1.0
    }
  ]
}

Duration	299s (5.0 min)
Video	1280×800 @ 10.0fps
Audio track	yes
Shot changes
Dead air	2 gaps ≥6.0s · 32.5s total · longest 25.0s
Luma	avg 45.8 · min · max
Medium	board 92.7% flat background
Content written	8.52% → 1.68% (+11.98)
Transcript	1319 characters of speech
Frames	9

Run #760

The recording

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

Transcript 1,319 characters · 250 stripped

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

Transcript 1,319 characters · 250 stripped

Review team

Product AI

Measured

What the model returned verbatim

Frames in order, one every ~33s