Run #786

done rubric v1 session 80561516 gemini-3.7-flash 2026-10-08 18:51

Session in Sessions →

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

OCR of the image GOOGLE_VISION

i 4sec A-4 foot A=1.

The phone's own reading, which differs:

।। ८c4/2 4৫

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

4sec^2 A - 4tan^2 A = ?

Audit's summary: The student asked to find the value of the expression 4sec^2 A - 4tan^2 A. The tutor used the trigonometric identity sec^2 θ - tan^2 θ = 1 to solve the problem. The tutor factored out 4 from the expression, resulting in 4(sec^2 A - tan^2 A). By substituting the identity, the expression simplified to 4(1), which equals 4. The tutor successfully guided the student to the correct answer.

Transcript 287 characters

Read it no speaker labels — tutor and student run together

Hello Shashi Kumar, welcome to Filo. Yes sir. आवाज आ रही है मेरी? Yes sir. ठीक है तो start करते हैं. session. 4 sec square A minus 4 tan square A की value क्या होती है? ठीक है? बहुत असान है. इसको करने की कोशिश करते हैं. यही question है न तुमारा? Hello. आवाज आ रही है? Hello. वन्यवास लगाओ

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

OCR of the image GOOGLE_VISION

i 4sec A-4 foot A=1.

The phone's own reading, which differs:

।। ८c4/2 4৫

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

4sec^2 A - 4tan^2 A = ?

Transcript 287 characters

Read it no speaker labels — tutor and student run together

Review team

tutor_issue / pedagogy-issues

Please make sure to address all of the student's doubts. If you are unable to answer any question, ask the student to connect with another tutor rather than skipping the question or ending the session. Also, please do not push students to give a 5-star rating. You can simply ask them to rate the session based on their experience.

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 The whiteboard is oriented upright at 0 degrees.

All frames (1-8) show the whiteboard and uploaded image oriented correctly at 0 degrees.

seen · 100% confident
Your view
Writing is legible at video size The tutor's handwriting is clear and legible.

White handwritten text on a dark canvas is clearly readable across frames 4 through 8.

seen · 100% 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 visible from the beginning.

The original question '4 sec^2 A - 4 tan^2 A = ?' is present on the uploaded notebook image visible from Frame 1.

seen · 100% confident
Your view
Work proceeds in followable steps Working progresses linearly and remains on screen.

The tutor writes the question, identity, factoring step, and final result sequentially on the right side from Frame 4 to Frame 8 without erasing.

seen · 95% confident
Your view
It reaches an answer The problem is fully solved.

Frame 8 shows the final completed answer '4(1) = 4' clearly circled.

seen · 100% confident
Your view
Something was actually written board went from 38.94% to a peak of 38.94% covered (+0.00 points), ending at 36.78%

Effectively nothing was written.

measured
Your view
The concept is named before the working The identity is written on board but not explicitly named in the spoken transcript.

In Frame 5, the identity 'sec^2 theta - tan^2 theta = 1' is boxed, but the transcript does not show the tutor explicitly naming the concept of trigonometric identities.

heard · 85% confident
Your view
Explained rather than jumped to the answer The tutor moves quickly into writing the formula and solving.

The tutor re-states the question and writes the identity directly without prior conceptual setup.

heard · 85% confident
Your view
Solved step by step, not in one leap The solution proceeds logically step-by-step.

Frames 4 through 8 show progressive steps: stating the identity, factoring out 4, substituting 1, and obtaining 4.

heard · 95% confident
Your view
The session opens properly The tutor greeted the student and confirmed the problem.

The transcript shows the tutor greeting 'Hello Shashi Kumar, welcome to Filo' and confirming the question 'यही question है न तुमारा?'.

heard · 100% confident
Your view
No long dead air 1 gaps over 6.0s, 7s total (4% of the session), longest 7s

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 questions were asked to the student.

The transcript only contains audio checks ('आवाज आ रही है मेरी?') and question confirmation ('यही question है न तुमारा?'), with no question checking understanding of the math concept.

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": "The whiteboard is oriented upright at 0 degrees.",
      "evidence": "All frames (1-8) show the whiteboard and uploaded image oriented correctly at 0 degrees.",
      "confidence": 1.0
    },
    {
      "key": "legibility",
      "verdict": "ok",
      "headline": "The tutor's handwriting is clear and legible.",
      "evidence": "White handwritten text on a dark canvas is clearly readable across frames 4 through 8.",
      "confidence": 1.0
    },
    {
      "key": "question_captured",
      "verdict": "ok",
      "headline": "The question is visible from the beginning.",
      "evidence": "The original question '4 sec^2 A - 4 tan^2 A = ?' is present on the uploaded notebook image visible from Frame 1.",
      "confidence": 1.0
    },
    {
      "key": "structure",
      "verdict": "ok",
      "headline": "Working progresses linearly and remains on screen.",
      "evidence": "The tutor writes the question, identity, factoring step, and final result sequentially on the right side from Frame 4 to Frame 8 without erasing.",
      "confidence": 0.95
    },
    {
      "key": "completion",
      "verdict": "ok",
      "headline": "The problem is fully solved.",
      "evidence": "Frame 8 shows the final completed answer '4(1) = 4' clearly circled.",
      "confidence": 1.0
    },
    {
      "key": "concept_named",
      "verdict": "weak",
      "headline": "The identity is written on board but not explicitly named in the spoken transcript.",
      "evidence": "In Frame 5, the identity 'sec^2 theta - tan^2 theta = 1' is boxed, but the transcript does not show the tutor explicitly naming the concept of trigonometric identities.",
      "confidence": 0.85
    },
    {
      "key": "explained_before_solving",
      "verdict": "weak",
      "headline": "The tutor moves quickly into writing the formula and solving.",
      "evidence": "The tutor re-states the question and writes the identity directly without prior conceptual setup.",
      "confidence": 0.85
    },
    {
      "key": "concept_checked",
      "verdict": "bad",
      "headline": "No conceptual questions were asked to the student.",
      "evidence": "The transcript only contains audio checks ('आवाज आ रही है मेरी?') and question confirmation ('यही question है न तुमारा?'), with no question checking understanding of the math concept.",
      "confidence": 0.95
    },
    {
      "key": "step_by_step",
      "verdict": "ok",
      "headline": "The solution proceeds logically step-by-step.",
      "evidence": "Frames 4 through 8 show progressive steps: stating the identity, factoring out 4, substituting 1, and obtaining 4.",
      "confidence": 0.95
    },
    {
      "key": "opening",
      "verdict": "ok",
      "headline": "The tutor greeted the student and confirmed the problem.",
      "evidence": "The transcript shows the tutor greeting 'Hello Shashi Kumar, welcome to Filo' and confirming the question 'यही question है न तुमारा?'.",
      "confidence": 1.0
    }
  ]
}

Duration	171s (2.9 min)
Video	1280×800 @ 10.0fps
Audio track	yes
Shot changes
Dead air	1 gaps ≥6.0s · 7.0s total · longest 7.0s
Luma	avg 86.0 · min · max
Medium	board 62.9% flat background
Content written	38.94% → 36.78% (+0.0)
Transcript	287 characters of speech
Frames	8

Run #786

The recording

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

Transcript 287 characters

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

Transcript 287 characters

Review team

Product AI

Measured

What the model returned verbatim

Frames in order, one every ~21s