Survey

* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project

Document related concepts
Transcript
```On your sheet of paper…
• Write down your daily steps to enter into
the classroom.
doing AND what your mouth is doing during
Entering into the classroom
• Greet Ms. Diehl at the door.
• Silently grab your daily handouts from the
back table.
• You may check your outbox if you are
expecting graded work, but you have to be
sitting in your seat by the time the bell
rings or you are considered tardy.
• Silently begin working on your Do Now
before class gets started.
• HW on the right side
• 1 sheet of paper for your Do Now on the
desk.
• Do Now:
1. -3 + 4 =
3. -9 + -9 =
2. -5 + 2 =
4. 5 + -3 =
5. How are negatives and positives the
same?
1.
2.
3.
4.
-3 + 4 =
-5 + 2 =
-9 + -9 =
5 + -3 =
5. How are negative
and positive
numbers the same?
•
•
•
•
1
-3
-18
2
• Negative numbers are
the opposite of
positive numbers.
What three tools did we learn
yesterday?
• Number line
– Identify the starting point.
– Moving to left or right?
– How many spaces?
• Holes and Hills
– Holes are negative and hills are positive
– How many match up and cancel out?
• The Rules
Which method did you use?
Why do you like it the best?
I can add AND subtract integers
using a variety of tools!
• Get out your notes from yesterday. Turn it
over, and look at the back side.
War!
•
•
•
•
•
•
•
Black Cards are negative
Red cards are positive
1. Each person flips over two cards
Jack = 11
at a time.
2. Add the cards you have.
Queen = 12
3. Whomever has the biggest
number wins and collects the pile of
King = 13
cards.
4. You must write your problem in the
Ace = 14
first box, work in the second, and
answer in the third. YOU MUST
Joker = 15
RECORD EACH TIME!
5. Your goal is to collect all the cards
in the stack.
6. Play 3 games.
GAME TIME!
Two groups from yesterday join to make
one large group of 4.
If you were a group of 3 stay put and
don’t join with anyone.
1 Deck of cards per team. Divide the
deck of cards evenly between
members.
4 team members = 13 each
3 team members = 17 or 18 each
integers using a variety of
tools
Why?
I can add AND subtract integers
using a variety of tools.
• Tools
– Same Opposite Opposite
– Counters
– The Rule
Think…
• If negatives and positives are
opposites…then what is the opposite of
– SUBTRACTION!
• 8 and -8
• -6 and 6
• 4+9
4 -9
Subtracting Integers
• Subtracting an integer is the same as
• How do we know which signs to change?
Examples
1. 7 – 4 = 7 + (-4)
2. 12 – (-5) = 12 + 5
3. The temperate started off at -12
degrees in New York City. By the end
of the day, the temperature fell
another 3 degrees.
4. (-22) – (-40) = (-22) + 40
Re-write!
• Re-write each equation to be an addition
method. Remember our strategies!
• -9 -2 =
• 15 - -4 =
• -7 - -3 =
I can add AND subtract integers
using a variety of tools.
Practice with Counters
• You have a bag with blue and green
counters. Green are positive, blue are
negative.
• Place the number of negative signs and
the number of positive signs for each
number you have.
• Eliminate any pairs of negative and
positives.
• The number you have remaining is your
Solve these problems
1.
2.
3.
4.
5.
6.
7.
-4 – 9 =
-3 - -8 =
5 – 10 =
10 - -5 =
-4 - - 8 =
9 – 11 =
-12 – 36 =
8. -5 – 9 =
9. 17 – 6 =
10. 0 - - 9 =
11. -4 – 0 =
12. 25 - -8 =
• Brenda had a balance of -\$52 dollars in
her bank account. The bank charged her
\$10 for overdrawing her account. What
does her account balance look like? Write
an equation to solve this problem? Solve