MR:    OK, what happened here? 11:09

 

 

11:08:00

Sham:  The rope is too skinny (comotion

 

 

 

 

[Teacher waits until class is quiet]

 

11:10:

MR:    Now itŐs my turn to speak up here, and I want to select speakers rather than having conversations go on here.  What happened here now?  Amanda?

 

 

 

Ama:   the pulley was stronger than half the class

 

 

 

MR:    who was, did the pulley do anything?

 

 

 

Xs:      yeah

 

 

 

MR:    who pulled?

 

 

 

Xs:      we do

 

 

 

Xs:      you

 

 

 

MR:    I pulled, but I got some help you mean?

 

 

 

Xs:      yeah, a lot

 

 

 

MR:    So, (3) Devin?

 

 

 

Xs:      You

 

 

 

Dev:    Ahm you were pulling the pulley and I think that gave you the advantage over 8 or 9 of us or 10, and you were winning till IanŐs wheel stopped and then you had an advantage over us

 

 

 

Sham:  Ahm (2) ˙ You were pulling your own string, though, like one end of the string was tied to tha tha end thing, and you were just pulling it, and the pulley was attached to the thing, so when you pull, the whole pulley moves and everyone on the string moves with you.

[T selects him through pointing] [pointing to blackboard] [pulling movement]

 

 

MR:    So you are saying that one pulley is attached, one side attached?

[begins drawing pulley]

 

 

Sham:  to the, to the banister, over //there]

 

 

11:11

MR:    and] the other side was not attached?

 

 

 

Sham:  no, the other side we were trying to pull.  If we had let go, you would be off somewhere=

 

 

MR:    =where was I, on which side was I?

 

 

 

Kian:   ˇAˇ

 

 

 

Don:    no, you were on B

 

 

 

X:        B

 

 

 

MR:    Don, why do you think I was on B?

[points to BB]

 

 

Don:    because you were pulling on the little rope attached the pulley, and we were just going in a circle

 

 

 

MR:    You, you were pulling this string (.)

 

 

 

Don:    yeah (.)

 

 

 

MR:    and I was pulling on the side that was?

 

 

 

Rile:    ˇletŐs switch sidesˇ

 

 

 

Don:    supports, strong supports

[T draws on the blackboard]

 

 

MR:    who supported me?

 

 

 

X:        you see the?)

 

 

 

X:        (Don?)

 

 

 

MR:    sh:sh: who supported me? where (2)

 

 

 

Mac:    the pulley

 

 

 

MR:    OK, the pulley (.)

 

 

 

AJ:      us, that supported us, ˇ(there was no one to hold it?)ˇ

 

 

 

MR:    out loud AJ

 

 

 

AJ:      never mind

 

 

 

MR:    no, I DO mind

 

 

 

AJ:      OK, I forgot

 

 

 

MR:    out loud

 

 

 

AJ:      I forGOT

 

 

 

MR:    Sh::sh: (3) Carla?

 

 

 

Car:     the railing out there

 

 

11:12:

MR:    the railing out there, the railing there helped, the railing helped part and what helped me to make use of the railing?

 

 

 

Ril:      the pulley

 

 

 

MR:    Amanda?

 

 

 

Ama:   the pulley

 

 

 

MR:    the pulley, the pulley sort of helped me to make use of the (.) of the railing, and I have you pull on the open end.  See this, what would have happened if we had rigged up the pulleys like, like Shamir wants me to do?  Something like, (.) what would have happened if we had set up the pulleys like this? (3)

 

 

[drawing]

 

Kian:   yeah

 

 

 

MR:    what would have happened in this case?  Jennifer?

 

 

 

Jen:     well, it would have been easier for the class to pull you (.)

 

 

 

MR:    because?

 

 

 

Jen:     because there is nothing helping you, only you

 

 

11:13

MR:    so in this case, when you have a pulley fixed somewhere, and I pull one open end, and the class pulls the other open end, I donŐt stand a chance (2)

 

 

Sham:  but

 

 

 

MR:    there was a question? (2)

 

 

 

Sham:  but, when we were pulling on that other one, we were pulling, we were just pulling the banister string

 

 

MR:    No, you were pulling here, this pulley

[open end, A]

 

 

Sham:  yeah, but it was attached to the banister, if we pulled really hard then the (.)

 

 

 

Don:    I know, I //know]

 

 

 

Sham:  if we] pulled the hardest, then the banister would fly

 

 

 

Dani:   we were pulling where the pulley is

[T walks to the block and tackle]

 

 

(12)

 

 

 

Dani:   tough guy

 

 

 

MR:    you guys were pulling on this one here

[T holds the string, see Figure 1]

 

 

Don:    thatŐs a strong //support]

 

 

 

Asl:     but you would] have lost if there was a 1000 people on //there]

 

 

 

Chan:  It wou]ldnŐt have moved because I think //it is attached]]

 

 

 

Asl:     //Yeah, exactly]

 

 

 

Sham:  see, he is, ] actually it does

 

 

 

MR:    it is attached to that pulley, but that pulley isnŐt att//ached]

 

 

 

Sham:  no, but] itŐs attached to the banister

 

 

 

Chan:  (and so?) what are you

 

 

 

MR:    No, my rope is attached to the banister

 

 

 

Sham:  you had your support, if all of us let //go,] you would have been //in] Kelowna 11:14 ((laughter, 1))

 

 

 

X:        no]

 

 

11:14

Sham:  You would have been //in] Kelowna

[Laughter]

 

 

X:        no no]

 

 

 

MR:    Don?

 

 

 

Don:    the class was your strong support, we were holding it, because if we hadŐa let go you wouldŐa

 

 

 

Sham:  we were holding you up

 

 

 

Don:    yeah,

 

 

 

Sham:  because of that pulley

 

 

 

MR:    oua, no, I donŐt know who held who up? (.) Chantelle?

 

 

 

Chan:  well if the other rope is hold on to there, then we wouldnŐt be pulling anything, Ôcause itŐs itŐs stuck onto there, so