models of signed numbers © math as a second language all rights reserved next #9 taking the fear...
TRANSCRIPT
Models of
Signed Numbers
© Math As A Second Language All Rights Reserved
next
#9
Taking the Fearout of Math
© Math As A Second Language All Rights Reserved
nextDirections for the Teacher
Review signed numbers with your students.
Click each time next appears.
next
Students should respond orally to the questions and then click for
the answer.
next
next
© Math As A Second Language All Rights Reserved
The “Business Model”next
If the first transaction resulted in a $3 profit, what must the second transaction have to be
in order for the net result of these two
transactions to be a $0 profit?
+3-3
Profit/Loss
If the temperature increases by 3°C in the first hour, what must it do during the second
hour in order for the temperature to return to what
it was originally?
next
© Math As A Second Language All Rights Reserved
The Temperature Model
0+1+2+3+4+5+6+7
-1-2-3-4-5
next
incr
ease
sd
ecre
ases
If you move 3 units to the right of where you were, what must you do to return
to your starting point?
next
© Math As A Second Language All Rights Reserved
The Directed Distance Modelnext
0+3
-3
next
© Math As A Second Language All Rights Reserved
The “Business Model”next
“If the first transaction resulted in a $4 profit, what must the second transaction have to be
in order for the net result of these two
transactions to be a $0 profit?”
Profit/Loss
+4 -4
If the temperature increases by 6°C in the first hour, what must it do during the second
hour in order for the temperature to return to what
it was originally?
next
© Math As A Second Language All Rights Reserved
The Temperature Model
0+1+2+3+4+5+6+7
-1-2-3-4-5
next
incr
ease
sd
ecre
ases
If you move 7 units to the right of where you were, what must you do to return
to your starting point?
next
© Math As A Second Language All Rights Reserved
The Directed Distance Modelnext
0 +7
-7
next
© Math As A Second Language All Rights Reserved
The “Business Model”next
If the first transaction resulted in a $3 loss,
what must the second transaction have to be
in order for the net result of these two transactions to be
a $0 loss?
+3-3
Profit/Loss
If you move 3 units to the left of where you were, what must you do to return
to your starting point?
next
© Math As A Second Language All Rights Reserved
The Directed Distance Modelnext
0+3
-3
next
© Math As A Second Language All Rights Reserved
The “Business Model”next
If the first transaction resulted in a $4 loss,
what must the second transaction have to be
in order for the net result of these two
transactions to be a $0 loss?
Profit/Loss
+4-4
If the temperature decreases by 3°C in the first hour, what must it do during the second
hour in order for the temperature to return to what
it was originally?
next
© Math As A Second Language All Rights Reserved
The Temperature Model
0+1+2+3+4+5+6+7
-1-2-3-4-5
next
dec
reas
esin
crea
ses
If you move 7 units to the left of where you were, what must you do to return
to your starting point?
next
© Math As A Second Language All Rights Reserved
The Directed Distance Modelnext
0+7
-7
next
© Math As A Second Language All Rights Reserved
The “Business Model”next
If the first transaction resulted in a $3 profit, what must the second transaction have to be
in order for the net result of these two
transactions to be a $0 profit?
+3 -3
Profit/Loss
© Math As A Second Language All Rights Reserved
nextDirections for the Teacher
Students should click on the correct answer.
Students should read the question.
next
The correct answer will proceed to the next slide.
next
© Math As A Second Language All Rights Reserved
The “Business Model”
If the first transaction resulted in a $100 loss, what must the second
transaction have to be in order for the net result of these two transactions to
be a $0 loss?
$ - 100 $ +100
If the temperature increases by 10°F in the first hour, what must it do
during the second hour in order for the temperature to return to what it
was originally?
© Math As A Second Language All Rights Reserved
The Temperature Model
- 10o +10o
If you move 25 units to the left of where you were, what must you do to return
to your starting point?
© Math As A Second Language All Rights Reserved
The Directed Distance Model
- 25 units +25 units
© Math As A Second Language All Rights Reserved
The “Business Model”
If the first transaction resulted in a $250 profit, what must the second
transaction have to be in order for the net result of these two transactions to
be a $0 profit?
$ - 250 $ +250
If the temperature decreases by 15°F in the first hour, what must it do
during the second hour in order for the temperature to return to what it
was originally?
© Math As A Second Language All Rights Reserved
The Temperature Model
- 15o +15o
If you move 18 units to the right of where you were, what must you do to return
to your starting point?
© Math As A Second Language All Rights Reserved
The Directed Distance Model
- 18 units +18 units
© Math As A Second Language All Rights Reserved
The “Business Model”
If the first transaction resulted in a $255 loss, what must the second
transaction have to be in order for the net result of these two transactions to
be a $0 loss?
$ - 255 $ +255
If the temperature decreases by 12°F in the first hour, what must it do
during the second hour in order for the temperature to return to what it
was originally?
© Math As A Second Language All Rights Reserved
The Temperature Model
- 12o +12o
© Math As A Second Language All Rights Reserved
The “Business Model”
If the first transaction resulted in a $49 profit, what must the second
transaction have to be in order for the net result of these two transactions to
be a $0 profit?
$ - 49 $ +49
If you move 32 units to the right of where you were, what must you do to return
to your starting point?
© Math As A Second Language All Rights Reserved
The Directed Distance Model
- 32 units +32 units
© Math As A Second Language All Rights Reserved
nextnext
I am positive that these models helped you to understand
signed numbers.
Positively Amazing