Datasets:
NationalTutoringObservatory
/
MathEd-PII

Dataset card Data Studio Files
xet
 Community
1
role
stringclasses
2 values
content
stringlengths
0
2.1k
session_id
int64
10
21.7k
sequence_id
int64
0
2.38k
annotations
listlengths
0
8
student
betweent the 2 triangles
15,029
10
[]
volunteer
yeah, that's one way of saying it
15,029
11
[]
student
oh
15,029
12
[]
student
whats the other way?
15,029
13
[]
volunteer
a line is not really a midpoint
15,029
14
[]
volunteer
a midpoint is a point
15,029
15
[]
volunteer
but, if you find the midpoint between A and A', and the midpoint between C and C', and draw a line between those points, then you'll have the line of reflection
15,029
16
[]
student
then divide it by 2?
15,029
17
[]
volunteer
divide what by 2?
15,029
18
[]
student
like say the lor was 14 between A &A'
15,029
19
[]
student
then you split it and youd get 7
15,029
20
[]
student
or no?
15,029
21
[]
volunteer
you aren't describing this very clearly
15,029
22
[]
student
sorry
15,029
23
[]
volunteer
find the difference in x-coordinate between A and A'.
15,029
24
[]
volunteer
Divide that in half. Move that many spaces from A to get the x-coordinate for the midpoint
15,029
25
[]
volunteer
Do the same for y
15,029
26
[]
student
do i need to make a coordinate graph?
15,029
27
[]
volunteer
you need to draw on the image you uploaded
15,029
28
[]
student
okay
15,029
29
[]
volunteer
from A, how many units to the right and up do you need to go?
15,029
30
[]
student
<6,2>
15,029
31
[]
volunteer
no
15,029
32
[]
volunteer
remember to divide by 2 after finding the difference
15,029
33
[]
student
so
15,029
34
[]
student
6/2/2
15,029
35
[]
student
i mean
15,029
36
[]
student
6-2/2
15,029
37
[]
student
which is 2
15,029
38
[]
volunteer
no
15,029
39
[]
volunteer
let's start with x
15,029
40
[]
student
i dont get it
15,029
41
[]
volunteer
how far from A to A'
15,029
42
[]
volunteer
?
15,029
43
[]
student
6
15,029
44
[]
volunteer
divide that by 2
15,029
45
[]
student
3
15,029
46
[]
volunteer
yes
15,029
47
[]
volunteer
now do the same for y
15,029
48
[]
student
so what did i do wrong
15,029
49
[]
student
ohhh
15,029
50
[]
volunteer
did you tell me 3?
15,029
51
[]
student
was it because i subtracted?
15,029
52
[]
volunteer
you told me how far from A to A'
15,029
53
[]
volunteer
I was asking how far from A to where you need to graph the midpoint
15,029
54
[]
volunteer
the midpoint is halfway, so you divide by 2
15,029
55
[]
student
oh okayy
15,029
56
[]
student
so now i do C and C'?
15,029
57
[]
volunteer
after you draw the midpoint for A and A' on the whiteboard where I can see it
15,029
58
[]
student
like that?
15,029
59
[]
volunteer
draw a point where those lines intersect, then delete the lines
15,029
60
[]
student
there
15,029
61
[]
volunteer
good
15,029
62
[]
volunteer
now do the same for C and C'
15,029
63
[]
volunteer
you don't need to draw intersecting lines
15,029
64
[]
student
12
15,029
65
[]
volunteer
you can find the x and y differences, divide by 2, just count that many lines to the right and up
15,029
66
[]
volunteer
12 from C to C'
15,029
67
[]
student
is it 12/2 which is 6
15,029
68
[]
student
yes
15,029
69
[]
volunteer
yes, 6 for the midpoint
15,029
70
[]
volunteer
x
15,029
71
[]
student
so
15,029
72
[]
volunteer
no
15,029
73
[]
student
oh
15,029
74
[]
volunteer
your point has the same y as C'
15,029
75
[]
volunteer
it's supposed to be halfway between C and C'
15,029
76
[]
student
im confused
15,029
77
[]
volunteer
what are you confused about? your new point is correct
15,029
78
[]
student
ohh
15,029
79
[]
volunteer
the first one was wrong
15,029
80
[]
student
oh
15,029
81
[]
volunteer
now draw a line through those points and you'll have your answer
15,029
82
[]
student
okay
15,029
83
[]
student
like that?
15,029
84
[]
volunteer
looks right to me. does it look like the line of reflection to you?
15,029
85
[]
student
yes
15,029
86
[]
volunteer
it is correct
15,029
87
[]
student
wait i have to put it
15,029
88
[]
volunteer
still working on it?
15,029
89
[]
student
yes
15,029
90
[]
student
keep saying its wrong
15,029
91
[]
student
but i graphed it right
15,029
92
[]
volunteer
want to upload a picture of the answer you put it?
15,029
93
[]
student
yes but it changed it but ik the midpoint for each one
15,029
94
[]
volunteer
what more can I do for you at this point? the answer you drew on the whiteboard here is correct
15,029
95
[]
student
no like it put a different problem
15,029
96
[]
student
but i know the midpoint to it
15,029
97
[]
volunteer
that lower blue dot
15,029
98
[]
volunteer
is its y the same as B or halfway between B and B'?
15,029
99
[]
student
isnt it 9
15,029
100
[]
volunteer
I'm asking about y, not x
15,029
101
[]
student
i dont know what your saying
15,029
102
[]
volunteer
up/down, not right/left
15,029
103
[]
volunteer
you picked a point whose y-coordinate is the same as point B
15,029
104
[]
volunteer
it is supposed to be halfway between B and B'
15,029
105
[]
volunteer
do you see?
15,029
106
[]
student
so its not 9?
15,029
107
[]
volunteer
x-coordinates have difference of 18. 18/2 is 9.
15,029
108
[]
volunteer
I'm not talking about x
15,029
109
[]