1. Interactive Whiteboard Knockout Game
Combining Like Terms
Interactive Whiteboard Knockout Game
CCSS 7.EE.A.1 & 8.EE.C.7
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2. Directions: For this game, each student has their own score card where you show your work and the answers they choose. Each character in the game is in one of the boxes, so complete each question in the appropriate character’s box.
How to play-
Open the presentation by selecting IMPORT TO KEYNOTE. Open and select the BEGIN ARROW.
Take turns to choose the character for the each question. Clicking on the character will bring up the question.
Each student answers the question on their score card. Each slide contains a point value. After students have responded, click on the presentation again and the answer will appear. If a student gets the answer correct, they add their points to the column on the right side to be totaled at the end of the game. All students answer every question, and each student keeps track of his/her own points.
Click the “Back” button to return to the game board and choose the next character/question. When the game is finished, turn in your student score cards.
Math Standards Addressed:
CCSS 7.EE.A.1 & 8.EE.C.7
©IDEA GALAXY

4. 100
Back
Simplify this expression:
x + 2x + 5x 8x

5. 100
Back
Simplify this expression:
5c + (-2c)+ c 4c

6. 100
Back
Simplify this expression:
3y + 11y- 2y
12y

7. 100
Back
Simplify this expression:
25h + (-4h)+ 9h
30h

8. 100
Back
Simplify this expression:
z + 7z +7z + 3z
18z

9. Bonus
Back
All students in your row,
pod, or group get
500 points

10. 100
Back
Simplify this expression:
3x x
5x - 3

11. 100
Back
Simplify this expression:
14n
14n + 1

12. 100
Back
Simplify this expression:
5 – 4m – 2m
-6m + 5

13. 500
Back
Simplify this expression:
(-2c + 3)+ (c + 7)
-c + 10

14. Bonus
Back
Sorry,
Lose All Your Points!

15. 500
Back
Simplify this expression:
(2y + 4) + (5y – 3)
7y + 1

16. 500
Back
Simplify this expression:
(81h + 13)+ (16h + 12)
97h + 25

17. Bonus
Back
Sorry,
lose 500 points

18. 500
Back
Simplify this expression:
(9y – 4) + (-4y + 12)
5y + 8

19. 1000
Back
Simplify this expression:
2(x + 3) + 5
2x + 11

20. 1000
Back
Simplify this expression:
-(3y + 7) – 8
-3y – 15

21. 1000
Back
Simplify this expression:
-3(x -5) + 11
-3x + 26

22. Everyone who gets the next question correct will earn double points.
Bonus
Back
Congratulations!
Everyone who gets the next question correct will earn double points.

23. Original problem: Simplify –(3y + 5) – 2
5000
Back
A student simplified an expression. Find the error and explain why it’s wrong:
Original problem: Simplify –(3y + 5) – 2
Step 1: -3y + 5 – 2
Step 2: -3y + 3
The error is in Step 1. The student didn’t apply the distributive property correctly. Both terms inside the parentheses should have been multiplied by -1. The correct answer is -3y – 7