source
stringclasses
2 values
tutor_model
stringclasses
7 values
prompt_mode
stringclasses
2 values
moment_id
stringlengths
79
136
key_moment_index
int64
0
206
⌀
transcript_id
stringclasses
122 values
turn_start
int64
1
874
turn_end
int64
1
874
statement_index
int64
0
16
statement
stringlengths
4
300
situation_label
stringclasses
6 values
action_label
stringclasses
5 values
result_label
stringclasses
3 values
stance_prefixed
bool
2 classes
category
stringclasses
13 values
category_name
stringclasses
13 values
orientation
stringclasses
3 values
excluded_reason
stringclasses
4 values
benchmark_520
gpt-5.5-2026-04-23
scaffolding_rigor
balanced_520:fce0bf42-dce2-568e-b271-3149f5a0dbe6_26cec584-a869-58bf-8cf5-51fbb49e323f_a2e0105d-553c-525b-8a15-4db2e668acd2__hum_271_275
null
a2e0105d-553c-525b-8a15-4db2e668acd2
275
281
0
The tutor pushes for rigor by asking the student to explain their reasoning using place-value vocabulary, rather than just giving an answer.
rigor
rigor
pos
true
G
Prompting for explanation, justification, or reasoning
rigor
null
benchmark_520
gpt-5.5-2026-04-23
scaffolding_rigor
balanced_520:fce0bf42-dce2-568e-b271-3149f5a0dbe6_26cec584-a869-58bf-8cf5-51fbb49e323f_a2e0105d-553c-525b-8a15-4db2e668acd2__hum_271_275
null
a2e0105d-553c-525b-8a15-4db2e668acd2
275
281
1
The tutor follows up with an additional quick problem that also requires the student to name the specific place value that determines the comparison.
rigor
rigor
pos
false
I
Increasing complexity or challenge
rigor
null
benchmark_520
gpt-5.5-2026-04-23
scaffolding_rigor
balanced_520:fce0bf42-dce2-568e-b271-3149f5a0dbe6_26cec584-a869-58bf-8cf5-51fbb49e323f_a2e0105d-553c-525b-8a15-4db2e668acd2__hum_277_298
null
a2e0105d-553c-525b-8a15-4db2e668acd2
287
291
0
The tutor scaffolds by breaking the comparison into a step-by-step place-value analysis.
scaffolding
both
pos
true
B
Breaking the problem into steps
scaffolding
null
benchmark_520
gpt-5.5-2026-04-23
scaffolding_rigor
balanced_520:fce0bf42-dce2-568e-b271-3149f5a0dbe6_26cec584-a869-58bf-8cf5-51fbb49e323f_a2e0105d-553c-525b-8a15-4db2e668acd2__hum_277_298
null
a2e0105d-553c-525b-8a15-4db2e668acd2
287
291
1
The tutor explicitly identifies which places are the same.
scaffolding
both
pos
false
E
Hints, reminders, and narrowing support
scaffolding
null
benchmark_520
gpt-5.5-2026-04-23
scaffolding_rigor
balanced_520:fce0bf42-dce2-568e-b271-3149f5a0dbe6_26cec584-a869-58bf-8cf5-51fbb49e323f_a2e0105d-553c-525b-8a15-4db2e668acd2__hum_277_298
null
a2e0105d-553c-525b-8a15-4db2e668acd2
287
291
2
The tutor narrows the comparison to the ones place.
scaffolding
both
pos
false
E
Hints, reminders, and narrowing support
scaffolding
null
benchmark_520
gpt-5.5-2026-04-23
scaffolding_rigor
balanced_520:fce0bf42-dce2-568e-b271-3149f5a0dbe6_26cec584-a869-58bf-8cf5-51fbb49e323f_a2e0105d-553c-525b-8a15-4db2e668acd2__hum_277_298
null
a2e0105d-553c-525b-8a15-4db2e668acd2
287
291
3
The tutor asks the student to determine which number is bigger.
scaffolding
both
pos
false
A
Guiding/funneling questions toward an answer
scaffolding
null
benchmark_520
gpt-5.5-2026-04-23
scaffolding_rigor
balanced_520:fce0bf42-dce2-568e-b271-3149f5a0dbe6_26cec584-a869-58bf-8cf5-51fbb49e323f_a2e0105d-553c-525b-8a15-4db2e668acd2__hum_277_298
null
a2e0105d-553c-525b-8a15-4db2e668acd2
287
291
4
The tutor asks the student which symbol to use.
scaffolding
both
pos
false
A
Guiding/funneling questions toward an answer
scaffolding
null
benchmark_520
gpt-5.5-2026-04-23
scaffolding_rigor
balanced_520:fce0bf42-dce2-568e-b271-3149f5a0dbe6_26cec584-a869-58bf-8cf5-51fbb49e323f_a2e0105d-553c-525b-8a15-4db2e668acd2__hum_277_298
null
a2e0105d-553c-525b-8a15-4db2e668acd2
287
291
5
The tutor pushes for rigor by asking the student to explain in one sentence which place value determined the comparison.
scaffolding
both
pos
true
G
Prompting for explanation, justification, or reasoning
rigor
null
benchmark_520
gpt-5.5-2026-04-23
scaffolding_rigor
balanced_520:fce0bf42-dce2-568e-b271-3149f5a0dbe6_26cec584-a869-58bf-8cf5-51fbb49e323f_a2e0105d-553c-525b-8a15-4db2e668acd2__hum_314_338
null
a2e0105d-553c-525b-8a15-4db2e668acd2
335
340
0
The tutor scaffolds by breaking the problem into sub-steps.
scaffolding
scaffolding
pos
true
B
Breaking the problem into steps
scaffolding
null
benchmark_520
gpt-5.5-2026-04-23
scaffolding_rigor
balanced_520:fce0bf42-dce2-568e-b271-3149f5a0dbe6_26cec584-a869-58bf-8cf5-51fbb49e323f_a2e0105d-553c-525b-8a15-4db2e668acd2__hum_314_338
null
a2e0105d-553c-525b-8a15-4db2e668acd2
335
340
1
The tutor first fills in one missing digit.
scaffolding
scaffolding
pos
false
F
Supplying answers, steps, or corrections
scaffolding
null
benchmark_520
gpt-5.5-2026-04-23
scaffolding_rigor
balanced_520:fce0bf42-dce2-568e-b271-3149f5a0dbe6_26cec584-a869-58bf-8cf5-51fbb49e323f_a2e0105d-553c-525b-8a15-4db2e668acd2__hum_314_338
null
a2e0105d-553c-525b-8a15-4db2e668acd2
335
340
2
The tutor asks the student what values the remaining digit could take to satisfy the inequality.
scaffolding
scaffolding
pos
false
A
Guiding/funneling questions toward an answer
scaffolding
null
benchmark_520
gpt-5.5-2026-04-23
scaffolding_rigor
balanced_520:fce0bf42-dce2-568e-b271-3149f5a0dbe6_26cec584-a869-58bf-8cf5-51fbb49e323f_a2e0105d-553c-525b-8a15-4db2e668acd2__hum_314_338
null
a2e0105d-553c-525b-8a15-4db2e668acd2
335
340
3
The tutor sets up the partial comparison.
scaffolding
scaffolding
pos
false
B
Breaking the problem into steps
scaffolding
null
benchmark_520
gpt-5.5-2026-04-23
scaffolding_rigor
balanced_520:fce0bf42-dce2-568e-b271-3149f5a0dbe6_26cec584-a869-58bf-8cf5-51fbb49e323f_a2e0105d-553c-525b-8a15-4db2e668acd2__hum_314_338
null
a2e0105d-553c-525b-8a15-4db2e668acd2
335
340
4
The tutor asks a focused guiding question.
scaffolding
scaffolding
pos
false
A
Guiding/funneling questions toward an answer
scaffolding
null
benchmark_520
gpt-5.5-2026-04-23
scaffolding_rigor
balanced_520:fce0bf42-dce2-568e-b271-3149f5a0dbe6_26cec584-a869-58bf-8cf5-51fbb49e323f_a2e0105d-553c-525b-8a15-4db2e668acd2__hum_314_338
null
a2e0105d-553c-525b-8a15-4db2e668acd2
335
340
5
The tutor confirms the student's correct answer.
scaffolding
scaffolding
pos
false
K
Affirmations, check-ins, and confirming answers
neutral
null
benchmark_520
gpt-5.5-2026-04-23
scaffolding_rigor
balanced_520:fce0bf42-dce2-568e-b271-3149f5a0dbe6_26cec584-a869-58bf-8cf5-51fbb49e323f_a2e0105d-553c-525b-8a15-4db2e668acd2__hum_314_338
null
a2e0105d-553c-525b-8a15-4db2e668acd2
335
340
6
The tutor explains the boundary cases (equal, less than, greater than).
scaffolding
scaffolding
pos
false
C
Explaining, modeling, or co-solving
scaffolding
null
benchmark_520
gpt-5.5-2026-04-23
scaffolding_rigor
balanced_520:fce0bf42-dce2-568e-b271-3149f5a0dbe6_26cec584-a869-58bf-8cf5-51fbb49e323f_a2e0105d-553c-525b-8a15-4db2e668acd2__hum_314_338
null
a2e0105d-553c-525b-8a15-4db2e668acd2
335
340
7
The tutor clarifies the student's confusion about the answer for part A.
scaffolding
scaffolding
pos
false
C
Explaining, modeling, or co-solving
scaffolding
null
benchmark_520
gpt-5.5-2026-04-23
scaffolding_rigor
balanced_520:fce0bf42-dce2-568e-b271-3149f5a0dbe6_26cec584-a869-58bf-8cf5-51fbb49e323f_a2e0105d-553c-525b-8a15-4db2e668acd2__hum_314_338
null
a2e0105d-553c-525b-8a15-4db2e668acd2
335
340
8
The tutor re-explains why any digit works.
scaffolding
scaffolding
pos
false
C
Explaining, modeling, or co-solving
scaffolding
null
benchmark_520
gpt-5.5-2026-04-23
scaffolding_rigor
balanced_520:fce0bf42-dce2-568e-b271-3149f5a0dbe6_26cec584-a869-58bf-8cf5-51fbb49e323f_a2e0105d-553c-525b-8a15-4db2e668acd2__hum_314_338
null
a2e0105d-553c-525b-8a15-4db2e668acd2
335
340
9
The tutor connects the explanation back to place value reasoning.
scaffolding
scaffolding
pos
false
C
Explaining, modeling, or co-solving
scaffolding
null
benchmark_520
gpt-5.5-2026-04-23
scaffolding_rigor
balanced_520:fce0bf42-dce2-568e-b271-3149f5a0dbe6_26cec584-a869-58bf-8cf5-51fbb49e323f_a2e0105d-553c-525b-8a15-4db2e668acd2__hum_332_338
null
a2e0105d-553c-525b-8a15-4db2e668acd2
335
339
0
The tutor scaffolds by breaking the comparison down to focus only on the differing digit.
scaffolding
both
pos
true
B
Breaking the problem into steps
scaffolding
null
benchmark_520
gpt-5.5-2026-04-23
scaffolding_rigor
balanced_520:fce0bf42-dce2-568e-b271-3149f5a0dbe6_26cec584-a869-58bf-8cf5-51fbb49e323f_a2e0105d-553c-525b-8a15-4db2e668acd2__hum_332_338
null
a2e0105d-553c-525b-8a15-4db2e668acd2
335
339
1
The tutor simplifies the problem for the student.
scaffolding
both
pos
false
M
Other
neutral
null
benchmark_520
gpt-5.5-2026-04-23
scaffolding_rigor
balanced_520:fce0bf42-dce2-568e-b271-3149f5a0dbe6_26cec584-a869-58bf-8cf5-51fbb49e323f_a2e0105d-553c-525b-8a15-4db2e668acd2__hum_332_338
null
a2e0105d-553c-525b-8a15-4db2e668acd2
335
339
2
The tutor asks the student to enumerate the valid digits.
scaffolding
both
pos
false
A
Guiding/funneling questions toward an answer
scaffolding
null
benchmark_520
gpt-5.5-2026-04-23
scaffolding_rigor
balanced_520:fce0bf42-dce2-568e-b271-3149f5a0dbe6_26cec584-a869-58bf-8cf5-51fbb49e323f_a2e0105d-553c-525b-8a15-4db2e668acd2__hum_332_338
null
a2e0105d-553c-525b-8a15-4db2e668acd2
335
339
3
The tutor summarizes both parts after the student answers correctly.
scaffolding
both
pos
false
C
Explaining, modeling, or co-solving
scaffolding
null
benchmark_520
gpt-5.5-2026-04-23
scaffolding_rigor
balanced_520:fce0bf42-dce2-568e-b271-3149f5a0dbe6_26cec584-a869-58bf-8cf5-51fbb49e323f_a2e0105d-553c-525b-8a15-4db2e668acd2__hum_332_338
null
a2e0105d-553c-525b-8a15-4db2e668acd2
335
339
4
The tutor pushes for rigor with a quick comprehension check.
scaffolding
both
pos
true
K
Affirmations, check-ins, and confirming answers
neutral
null
benchmark_520
gpt-5.5-2026-04-23
scaffolding_rigor
balanced_520:fce0bf42-dce2-568e-b271-3149f5a0dbe6_26cec584-a869-58bf-8cf5-51fbb49e323f_a2e0105d-553c-525b-8a15-4db2e668acd2__hum_332_338
null
a2e0105d-553c-525b-8a15-4db2e668acd2
335
339
5
The tutor asks the student to explain why a specific digit does not work.
scaffolding
both
pos
false
G
Prompting for explanation, justification, or reasoning
rigor
null
benchmark_520
gpt-5.5-2026-04-23
scaffolding_rigor
balanced_520:fce0bf42-dce2-568e-b271-3149f5a0dbe6_26cec584-a869-58bf-8cf5-51fbb49e323f_a2e0105d-553c-525b-8a15-4db2e668acd2__hum_62_87
null
a2e0105d-553c-525b-8a15-4db2e668acd2
80
85
0
The tutor scaffolds by confirming the student's intermediate results.
scaffolding
both
pos
true
K
Affirmations, check-ins, and confirming answers
neutral
null
benchmark_520
gpt-5.5-2026-04-23
scaffolding_rigor
balanced_520:fce0bf42-dce2-568e-b271-3149f5a0dbe6_26cec584-a869-58bf-8cf5-51fbb49e323f_a2e0105d-553c-525b-8a15-4db2e668acd2__hum_62_87
null
a2e0105d-553c-525b-8a15-4db2e668acd2
80
85
1
The tutor reduces the answer to two options for where the products go in the fraction.
scaffolding
both
pos
false
E
Hints, reminders, and narrowing support
scaffolding
null
benchmark_520
gpt-5.5-2026-04-23
scaffolding_rigor
balanced_520:fce0bf42-dce2-568e-b271-3149f5a0dbe6_26cec584-a869-58bf-8cf5-51fbb49e323f_a2e0105d-553c-525b-8a15-4db2e668acd2__hum_62_87
null
a2e0105d-553c-525b-8a15-4db2e668acd2
80
85
2
After the student answers correctly, the tutor pushes for rigor by asking the student to identify a common error.
scaffolding
both
pos
true
G
Prompting for explanation, justification, or reasoning
rigor
null
benchmark_520
gpt-5.5-2026-04-23
scaffolding_rigor
balanced_520:fce0bf42-dce2-568e-b271-3149f5a0dbe6_26cec584-a869-58bf-8cf5-51fbb49e323f_a2e0105d-553c-525b-8a15-4db2e668acd2__hum_62_87
null
a2e0105d-553c-525b-8a15-4db2e668acd2
80
85
3
The tutor asks the student why someone might choose a wrong answer choice.
scaffolding
both
pos
false
G
Prompting for explanation, justification, or reasoning
rigor
null
benchmark_520
gpt-5.5-2026-04-23
scaffolding_rigor
balanced_520:fce0bf42-dce2-568e-b271-3149f5a0dbe6_26cec584-a869-58bf-8cf5-51fbb49e323f_a2e0105d-553c-525b-8a15-4db2e668acd2__hum_62_87
null
a2e0105d-553c-525b-8a15-4db2e668acd2
80
85
4
The tutor extends with another quick-check question.
scaffolding
both
pos
false
K
Affirmations, check-ins, and confirming answers
neutral
null
benchmark_520
gpt-5.5-2026-04-23
scaffolding_rigor
balanced_520:fce0bf42-dce2-568e-b271-3149f5a0dbe6_26cec584-a869-58bf-8cf5-51fbb49e323f_a2e0105d-553c-525b-8a15-4db2e668acd2__hum_62_87
null
a2e0105d-553c-525b-8a15-4db2e668acd2
80
85
5
The tutor asks the student to rewrite a whole number as a fraction.
scaffolding
both
pos
false
A
Guiding/funneling questions toward an answer
scaffolding
null
benchmark_520
gpt-5.5-2026-04-23
scaffolding_rigor
balanced_520:fce0bf42-dce2-568e-b271-3149f5a0dbe6_26cec584-a869-58bf-8cf5-51fbb49e323f_a2e0105d-553c-525b-8a15-4db2e668acd2__hum_62_87
null
a2e0105d-553c-525b-8a15-4db2e668acd2
80
85
6
The tutor reinforces a prerequisite skill.
scaffolding
both
pos
false
C
Explaining, modeling, or co-solving
scaffolding
null
benchmark_520
gpt-5.5-2026-04-23
scaffolding_rigor
balanced_520:ff261620-0993-5c65-8a2a-768bfff606a3_b787f081-b630-5db5-8756-96c930cf11e3_877efa6e-9d8b-549d-b52d-f405972a9d4e__hum_106_143
null
877efa6e-9d8b-549d-b52d-f405972a9d4e
115
119
0
The tutor is scaffolding by breaking the area problem into sequential sub-steps.
scaffolding
scaffolding
pos
true
B
Breaking the problem into steps
scaffolding
null
benchmark_520
gpt-5.5-2026-04-23
scaffolding_rigor
balanced_520:ff261620-0993-5c65-8a2a-768bfff606a3_b787f081-b630-5db5-8756-96c930cf11e3_877efa6e-9d8b-549d-b52d-f405972a9d4e__hum_106_143
null
877efa6e-9d8b-549d-b52d-f405972a9d4e
115
119
1
The tutor sets up each multiplication for finding the width and length.
scaffolding
scaffolding
pos
false
B
Breaking the problem into steps
scaffolding
null
benchmark_520
gpt-5.5-2026-04-23
scaffolding_rigor
balanced_520:ff261620-0993-5c65-8a2a-768bfff606a3_b787f081-b630-5db5-8756-96c930cf11e3_877efa6e-9d8b-549d-b52d-f405972a9d4e__hum_106_143
null
877efa6e-9d8b-549d-b52d-f405972a9d4e
115
119
2
The tutor provides the structure of the expression.
scaffolding
scaffolding
pos
false
C
Explaining, modeling, or co-solving
scaffolding
null
benchmark_520
gpt-5.5-2026-04-23
scaffolding_rigor
balanced_520:ff261620-0993-5c65-8a2a-768bfff606a3_b787f081-b630-5db5-8756-96c930cf11e3_877efa6e-9d8b-549d-b52d-f405972a9d4e__hum_106_143
null
877efa6e-9d8b-549d-b52d-f405972a9d4e
115
119
3
The tutor asks the student to fill in the result.
scaffolding
scaffolding
pos
false
A
Guiding/funneling questions toward an answer
scaffolding
null
benchmark_520
gpt-5.5-2026-04-23
scaffolding_rigor
balanced_520:ff261620-0993-5c65-8a2a-768bfff606a3_b787f081-b630-5db5-8756-96c930cf11e3_877efa6e-9d8b-549d-b52d-f405972a9d4e__hum_106_143
null
877efa6e-9d8b-549d-b52d-f405972a9d4e
115
119
4
The tutor assembles the final area multiplication.
scaffolding
scaffolding
pos
false
F
Supplying answers, steps, or corrections
scaffolding
null
benchmark_520
gpt-5.5-2026-04-23
scaffolding_rigor
balanced_520:ff261620-0993-5c65-8a2a-768bfff606a3_b787f081-b630-5db5-8756-96c930cf11e3_877efa6e-9d8b-549d-b52d-f405972a9d4e__hum_106_143
null
877efa6e-9d8b-549d-b52d-f405972a9d4e
115
119
5
The tutor asks the student to compute and simplify it.
scaffolding
scaffolding
pos
false
H
Withdrawing support / independent work
rigor
null
benchmark_520
gpt-5.5-2026-04-23
scaffolding_rigor
balanced_520:ff261620-0993-5c65-8a2a-768bfff606a3_b787f081-b630-5db5-8756-96c930cf11e3_877efa6e-9d8b-549d-b52d-f405972a9d4e__hum_147_157
null
877efa6e-9d8b-549d-b52d-f405972a9d4e
156
160
0
The tutor scaffolds by clarifying the source of the student's earlier error.
scaffolding
both
pos
true
C
Explaining, modeling, or co-solving
scaffolding
null
benchmark_520
gpt-5.5-2026-04-23
scaffolding_rigor
balanced_520:ff261620-0993-5c65-8a2a-768bfff606a3_b787f081-b630-5db5-8756-96c930cf11e3_877efa6e-9d8b-549d-b52d-f405972a9d4e__hum_147_157
null
877efa6e-9d8b-549d-b52d-f405972a9d4e
156
160
1
The tutor confirms the correct intermediate result.
scaffolding
both
pos
false
K
Affirmations, check-ins, and confirming answers
neutral
null
benchmark_520
gpt-5.5-2026-04-23
scaffolding_rigor
balanced_520:ff261620-0993-5c65-8a2a-768bfff606a3_b787f081-b630-5db5-8756-96c930cf11e3_877efa6e-9d8b-549d-b52d-f405972a9d4e__hum_147_157
null
877efa6e-9d8b-549d-b52d-f405972a9d4e
156
160
2
The tutor asks a guiding question to lead the student through the final conversion step.
scaffolding
both
pos
false
A
Guiding/funneling questions toward an answer
scaffolding
null
benchmark_520
gpt-5.5-2026-04-23
scaffolding_rigor
balanced_520:ff261620-0993-5c65-8a2a-768bfff606a3_b787f081-b630-5db5-8756-96c930cf11e3_877efa6e-9d8b-549d-b52d-f405972a9d4e__hum_147_157
null
877efa6e-9d8b-549d-b52d-f405972a9d4e
156
160
3
The tutor pushes for rigor by asking the student to explain what the numerator and denominator represent in context.
scaffolding
both
pos
true
G
Prompting for explanation, justification, or reasoning
rigor
null
benchmark_520
gpt-5.5-2026-04-23
scaffolding_rigor
balanced_520:ff261620-0993-5c65-8a2a-768bfff606a3_b787f081-b630-5db5-8756-96c930cf11e3_877efa6e-9d8b-549d-b52d-f405972a9d4e__hum_147_157
null
877efa6e-9d8b-549d-b52d-f405972a9d4e
156
160
4
The tutor elaborates on the student's explanation to deepen conceptual understanding.
scaffolding
both
pos
false
C
Explaining, modeling, or co-solving
scaffolding
null
benchmark_520
gpt-5.5-2026-04-23
scaffolding_rigor
balanced_520:ff261620-0993-5c65-8a2a-768bfff606a3_b787f081-b630-5db5-8756-96c930cf11e3_877efa6e-9d8b-549d-b52d-f405972a9d4e__hum_64_90
null
877efa6e-9d8b-549d-b52d-f405972a9d4e
90
94
0
The tutor pushes for rigor.
rigor
both
pos
true
null
null
null
pure_stance
benchmark_520
gpt-5.5-2026-04-23
scaffolding_rigor
balanced_520:ff261620-0993-5c65-8a2a-768bfff606a3_b787f081-b630-5db5-8756-96c930cf11e3_877efa6e-9d8b-549d-b52d-f405972a9d4e__hum_64_90
null
877efa6e-9d8b-549d-b52d-f405972a9d4e
90
94
1
The tutor asks the student to verify the answer using an alternative method — computing the full dimensions and multiplying.
rigor
both
pos
false
J
Prompting self-assessment / reconsideration
rigor
null
benchmark_520
gpt-5.5-2026-04-23
scaffolding_rigor
balanced_520:ff261620-0993-5c65-8a2a-768bfff606a3_b787f081-b630-5db5-8756-96c930cf11e3_877efa6e-9d8b-549d-b52d-f405972a9d4e__hum_64_90
null
877efa6e-9d8b-549d-b52d-f405972a9d4e
90
94
2
After the student succeeds, the tutor asks a metacognitive question: why do the two methods yield the same result?
rigor
both
pos
false
G
Prompting for explanation, justification, or reasoning
rigor
null
benchmark_520
gpt-5.5-2026-04-23
scaffolding_rigor
balanced_520:ff261620-0993-5c65-8a2a-768bfff606a3_b787f081-b630-5db5-8756-96c930cf11e3_877efa6e-9d8b-549d-b52d-f405972a9d4e__hum_64_90
null
877efa6e-9d8b-549d-b52d-f405972a9d4e
90
94
3
The tutor provides a formal algebraic explanation showing how the expressions are equivalent through regrouping.
rigor
both
pos
false
C
Explaining, modeling, or co-solving
scaffolding
null