1. Models of Signed Numbers © Math As A Second Language All Rights Reserved next #9 Taking the Fear out of Math

2. © Math As A Second Language All Rights Reserved next Directions for the Teacher Review signed numbers with your students. Click each time next appears. Students should respond orally to the questions and then click for the answer.

3. © 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 -3-3 Profit/Loss

4. 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 -2 -3 -4 -5 next increases decreases

5. 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 Model next 0 +3+3 -3-3

6. © 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 -4-4

7. 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 -2 -3 -4 -5 next increases decreases

8. 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 Model next 0 +7+7 -7-7

9. © 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 -3-3 Profit/Loss

10. 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 Model next 0 +3+3 -3-3

11. © 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 -4-4

12. 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 -2 -3 -4 -5 next decreases increases

13. 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 Model next 0 +7+7 -7-7

14. © 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 -3-3 Profit/Loss

15. © Math As A Second Language All Rights Reserved next Directions for the Teacher Students should click on the correct answer. Students should read the question. The correct answer will proceed to the next slide.

16. © 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

17. 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 - 10 o+ 10 o

18. 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

19. © 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

20. 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 - 15 o+ 15 o

21. 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

22. © 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

23. 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 - 12 o+ 12 o

24. © 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

25. 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

26. © Math As A Second Language All Rights Reserved next I am positive that these models helped you to understand signed numbers. Positively Amazing