Classroom videos included on CD that accompanied:

Thinking Mathematically: Integrating Arithmetic and Algebra in Elementary School
Thomas P. Carpenter, Megan Loef Franke, and Linda Levi, Heinemann:Portsmout. 2003

EDU 614 directory

Movie title on CD
Section and Time
Topic
Notes
Kevin
2.1 - 1:40

Equality:
Solving the a number sentence
4+5=__+3

Read number sentence and tell me what to put in the box; Reads says "same as" for = ; Can you tell ... __ ; counts on fingers ...
David
2.2 - 3:02

Equality:
Using Relationships to solve number sentences
6+2=__+3
57+38=56+39

First grade
Why 5? Didn't knowif 5 or 7 ...
Same as the 6+2, because 57&56 are related like 38&39
Lillian
2.3 - 10:19

Equality:
Developing Children's Conceptions of Equality

8+4=___+5
7=3+4
3+4=7
7=7
...
15+4=__ + 11

Fourth grade
Class discussion
fourth grade
Think about number fit in box...; 12; How many think 12?; All
Backwards... Misconception...
... 6=6; 5=5; 10=10;
5=4+1... Same on both sides (teacher asks at 5:00) ...
Goes back to 5+4=__12__+5 ; talk to partner....
should we leave the 12 there? How many people?; ...
So what need to do?; ...
Put 19 in box? ... need to be very careful what you mean...

Emma
3.1 - 17:45

Relational Thinking
Learning to Think Relationally

7+6=__+5

14+6=__+13
43+28=__+42
15+16=15+__
28+32=27+__
67+83=__+82

Second grade
Add 7+6 and count; knew this was 13 so...
Think 7; why; 14+6=20 so something +..
Those are 71; How know? left to right; Think what... count up... help if use blocks? 42... then used ones to 71; then group to get 29 ... ; how get that?; another way to get that answer? ...
How do that so quickly? look at numbers...
No... Asked how do 15+16... could do something like that? no; want to do it the other way? yes...; so what goes in box?... 30 something... 33; why? one more...; One more? tell me again what is so exciting?
What about this? 60; why? it's kinda of like this one. Which one? 68; why pick 68? ... ;
Learn something from all of thes?; What did you figure out? ....

Megan
3.2 - 6:11

Relational Thinking
Children Generating Number Sentences

7+6=__+5
14+6=__+13
43+28=__+42
15+16=15+__
28+32=27+__
67+83=__+82

Second grade
Write true false; How did you know that was true so fast?;
say again, I am not sure I am hearing it...;
How know without ever adding the numbers?; ... ; Prove to me; They are in a different order of adding them; Have to have two numbers can't switch them around in the number... (((Why didn't teacher explore this?)))
What am I doing with switching?...
A lot of conjectures... Need to write down to keep track of....
............................
Kenzie
3.3 - 4:59

Relational Thinking
Using Relationships to Generate Number Facts

3*7=7+7+7
4*6=12+12
3*7 = 14+7
4*6 = 12+12
4*7=__

Third Grade

How many sevens did I say?; Why don't you read it?; True because * is same
True, can we go back up here?; yes; ...
True; ?; 4 sixes; 32; have a way to check it? Oh 10+10...
Tell me what you would put in the box. 28; How know? used 3*7 = 7+7+7; 4*7=14+7; 4*6=12+12; 4*7=28

KF111400
4.1 - 4:10

Conjectures:
Generating a Conjecture Using Number Sentences

98+0=98
841+0=__

First/second combination
Class discussion

10+0=__; Student demonstrates with 10 blocks; Think we have a conjecture going here; Writes, If you add 0 to a number, then ...
Maybe any number minus zero...
Susie
4.2 - 8:01
Conjectures
A Conjecture Comes Up in Class Discussion

Conjecture, read out loud, is it true? a+b-b=a

Second grade
Try numbers, regular, super high, super low... Work with different types; Not completely, because can't do infinity;
1/2+11-11=1/2; 5+5-5=5; 5+ -5 --5 =5;
rewrite the conjectures; b-b is always 0 ; other conjecture is a+0=a; If you put two conjectures together and they are always true, then it would prove the third is true. Which is better way to prove? this way would take your hole life...
Allison16
5.1 - 2:41

Open Number Sentences
Solving the Equation

b+b+b-20=16

Fourth grade
Add, then put into three groups (10,10,10; ||,||,||) prove by adding; then prove by plugging into equation.
How do you know that adding wouild give what all these were?

Cody
5.2 - 1:52

Open Number Sentences
Solving the Equation

k+k+13 = k +20

Fourth grade
What would k have to equal for that to be a true number sentence? What made you think to try 7? Why did you know that k+13=20?
Allison
7.1 - 1:29

Justification
Justifying a Conjecture About Even and Odd

Odd + odd = even

Conjecture - proves by drawing lines on white board and pairing.
Thad
7.2 - 3:08

Justification
Developing an Understanding Numbers (chapter 7)

0*5=5*10
5+5+5=10+5
1+1+1+1+1=5+0

Second grade
Class discussion
Can you say that this is true?
I think that is true; Why?
How id you know that?;...; What happens whenever add zero?;...

Mike
8.1 - 3:28

Further Justification
Using Symbols in Proof

If you add odd to odd you get even

Fourth grade
m + m + 1; Matter what m is? No it is the mathematician's role. What if m = 3 1/2? Can't be a fraction.; Then I will add another b+b+1 and if add both of them, get m + m + 1 + b+b+1 = 2m + 2b + 2 ...
Can never do every sample that's out there.