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# Addition Games & Subtraction Games in One - Clobber is Perfect for Math Centers

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Addition Game & Subtraction Game in One -

- 1 Doubles, Doubles + 1 & Doubles +2 Board, 1 Friends to 10 Board,
2 Different Friends to 20 Boards & 1 Subtraction Facts Board. Oh... and there are really, really cute cavemen with big sticks that students love hehehe

::: PLUS ::: - There's a PowerPoint file included in the download to aid the teaching of the game and Number Talks.

About the Game:Clobber is a very new abstract strategy game, having only just been invented in 2001 by mathematicians. The original game is played on a blank board, but the GoTeachThis version requires the answering of algorithms allowing your students to receive a real mental workout while learning their basic facts. Since 2005 Clobber has been played as part of the Computer Olympiad, a worldwide annual competition that pits players against each other to determine who is the “world’s best player.”

Game in a Nutshell:

Players use counters to challenge the position of the other player, adding more counters across the board in an attempt to get the most. Once a player has challenged for a position, then must correctly solve the associated algorithm.

Teacher Tip: Preview the algorithms with your students before you start playing initially in order to make sure they are developing efficient strategies to arrive at the answers to the algorithms. Knowing what to expect will help them to enjoy the game.

What You Need:

- 2 players
- 1 Clobber Game Board
- 15 white counters
- 15 black counters

Note: Counters don’t have to be black and white - any colored counters will do.

Before the Game:

Review the rules with students, in particular the way that counters move and what kinds of math problems might be involved. Also review strategy for winning.

All moves must be orthogonal (right angles only along the horizontal and vertical). Review the definition of orthogonal with students. DIAGONAL MOVES ARE NOT PERMITTED

Game Play:

1. The person whose birthday is the next becomes Player One and plays white.
2. Player One picks up one of their counters and taps one of their opponent's counters which is seated on a vertically or horizontally adjacent square. This move is called a 'clobber'.
3. Player One removes the 'clobbered' counter, answers the algorithm which is revealed and then occupies the space with the their counter.
4. Player Two then repeats Steps 2 & 3.
5. Play continues in this fashion until no legal move can be taken.

Notes on Game Play:

- Every move MUST to be a capture.
- Players cannot slide their pieces onto an empty square.
- Orthogonal moves ONLY (right angles) no diagonals.
- Players cannot capture their own pieces.

During the Game:

- Consider having students stop and record each algorithm if they are ‘struggling’.
- Encourage students to get excited about “clobbering” their opponent! Sound effects are always welcome.
- Offer students strategy hints like:
- Try not to leave your pieces out on their own so they cannot move.
- Try to force your opponent to leave their pieces out on their own so they cannot move.

Winning:

The winner is the LAST player able to make a legal move i.e. when a player can no longer 'clobber' any of their opponent's pieces they lose.

Possible Reflection Questions:

- What strategies have you developed to give you a better chance of winning?

- Clobber is such a new game players don't yet know what is a good way to start. What do you think is the best way to open?

Possible Extension Activities:

- Invent a different shaped game board.

- Use different dimensions for the board. How does the game play change?

- This is the general rule for making Clobber boards: n x (n+1) where n stands for number. Ask students what could n x (n+1) mean? Now try making a board with these dimensions.

- Computer Olympiads Clobber is played on 10x10-boards - Give a 10x10 board a go!

Possible Reflection Questions:

- What strategies have you developed to give you a better chance of winning?
- Clobber is such a new game players don't yet know what is a good way to start. What do you think is the best way to open?

Possible Extension Activities:

- Invent a different shaped game board.
- Use different dimensions for the board. How does the game play change?
- This is the general rule for making Clobber boards: n x (n+1) where n stands for number. Ask students what could n x (n+1) mean? Now try making a board with these dimensions.
- Computer Olympiads Clobber is played on 10x10-boards - Give a 10x10 board a go!

- 5 full color boards
- 5 low color boards (printer friendly version)
- 1 PowerPoint Presentation with all full color boards for easy Number Talks

Enjoy!

PLEASE CHECK OUT MY MEGA BUNDLE! - The package includes ALL the Math and Literacy games currently in my store PLUS every resource I create for the next YEAR for FREE!!! It's like a great classroom resource that just keeps on giving. :-)

PS A HUGE thanks goes out tohttp://www.VectorState.com for the excellent cavemen in this game. Visit them when you need graphics!!!
Total Pages
13 pages
N/A
Teaching Duration
Lifelong tool
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