Showdown Teacher Guide Sign Rule Showdown
Teacher Facilitation Guide
Grade: 7th Grade
Subject: Mathematics
Duration: 45-50 Minutes
Learning Objective
Students will build fluency in dividing integers without manipulatives by identifying sign patterns (Same Signs = Positive; Different Signs = Negative).
Key Concept
"If the divisor is negative, flip the result to its opposite."
Lesson Timeline
5 MIN
Warm-Up: Negative Skip-Counting
Challenge students to skip count backwards starting from 0.
Sequence: -3, -6, -9, -12, -15, -18, -21, -24, -27, -30.Ask: "If we are at -30 and want to get back to 0 by jumps of 3, how many jumps would that take?" (Introduction to division as repeated subtraction/groups).
10 MIN
Video Practice Rounds
Use the "Showdown Instructional Slides" to display these segments.
Round 1 (5:40-7:18): Same-sign division. Students shout out or write down the answer before the narrator reveals it.Round 2 (8:40-10:07): Different-sign division. Increase the pace!Misconception Check: Ensure students aren't just memorizing "two negatives make a positive" but understand it as the "opposite of a negative group."
25 MIN
Activity: Integer War
Students play in pairs using a modified deck of cards.
Red Cards (♥/♦): Negative Integers
Black Cards (♣/♠): Positive Integers
Cards are flipped in pairs. Calculation: Top card ÷ Bottom card.
If the quotient is a whole number (divides evenly), the player keeps the cards.
If it doesn't divide evenly, cards go to a "Peace Pile" (discard).
5 MIN
Closure: Quick Write
"How is dividing integers similar to dividing whole numbers? How is it different?"
Preparation Checklist
Projector/Screen for Showdown Instructional Slides
One Integer War Card Deck per pair (cut and ready)
One Integer War Game Pack (Record Sheet) per student
Sign Rule Exit Tickets (half-sheets)
Showdown Instructional Slides SIGN RULE SHOWDOWN
Mastering Integer Division Fluency
Grade 7 Math
Warm-Up: Skip Count!
Can you beat the clock? Count backwards by -3 starting from 0!
0
-3
?
?
?
-15
?
?
?
-30
THINK: How many jumps of -3 are in -30?
The Golden Rules
SAME SIGNS
Positive ÷ Positive
POSITIVE (+)
DIFFERENT SIGNS
Positive ÷ Negative
NEGATIVE (-)
PRACTICE ROUND 1
SAME SIGNS
Try to beat the narrator to the answer!
Embedded media
PRACTICE ROUND 2
DIFFERENT SIGNS
Shout it out before the reveal!
Embedded media
Integer War
Pair-vs-Pair Division Duel
HOW TO PLAY
Split the deck between you.
Both players flip a card at the same time.
Divide: Top Card ÷ Bottom Card .
If it divides EVENLY , the first to call the answer wins the cards!
CARD COLORS
RED CARDS
NEGATIVE INTEGERS
BLACK CARDS
POSITIVE INTEGERS
Quick Write Closure
"How is dividing integers similar to dividing whole numbers? How is it different?"
Record your response on your Exit Ticket.
Integer War Game Pack Integer War
Player Rules & Reference
THE SETUP
1 Split the deck equally between 2 players.
2 Red cards are negative (-).
3 Black cards are positive (+).
HOW TO WIN
Each round, flip two cards. Divide the Top Card by the Bottom Card.
Example:
Top: Black 8 (+8) | Bottom: Red 2 (-2)
+8 ÷ -2 = -4
If the result is a whole number, shout it out! First one wins the cards.
The Sign Rules
Same Signs
(+) ÷ (+) OR (-) ÷ (-)
POSITIVE (+)
Different Signs
(+) ÷ (-) OR (-) ÷ (+)
NEGATIVE (-)
Game Record Sheet
Student Name: ____________________________
Record your evenly-divisible rounds below. Check the sign twice!
Round Equation (Top ÷ Bottom) Quotient Winner Initials 1 2 3 4 5 6 7 8 9 10
Integer War Card Deck Cut along solid lines Black Deck: Positive Integers (+)
1 +1 1
2 +2 2
3 +3 3
4 +4 4
5 +5 5
6 +6 6
7 +7 7
8 +8 8
9 +9 9
10 +10 10
11 +11 11
12 +12 12
15 +15 15
18 +18 18
20 +20 20
24 +24 24
Cut along solid lines Red Deck: Negative Integers (-)
1 -1 1
2 -2 2
3 -3 3
4 -4 4
5 -5 5
6 -6 6
7 -7 7
8 -8 8
9 -9 9
10 -10 10
11 -11 11
12 -12 12
15 -15 15
18 -18 18
20 -20 20
24 -24 24
Sign Rule Exit Ticket Integer Insight
Exit Ticket • Division Fluency
Name: ________________________
Date: _________________________
How is dividing integers similar to dividing whole numbers?
How is it different? (Think about the signs!)
Self-Check: I am confident with sign rules! [ ]
Integer Insight
Exit Ticket • Division Fluency
Name: ________________________
Date: _________________________
How is dividing integers similar to dividing whole numbers?
How is it different? (Think about the signs!)
Self-Check: I am confident with sign rules! [ ]
