Further beyond sudoku using logic puzzles to develop mathematical reasoning
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Further Beyond Sudoku: Using Logic Puzzles to Develop Mathematical Reasoning. Breedeen Pickford-Murray The Bay School of San Francisco.

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Further Beyond Sudoku: Using Logic Puzzles to Develop Mathematical Reasoning

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Further beyond sudoku using logic puzzles to develop mathematical reasoning

Further Beyond Sudoku:Using Logic Puzzles to Develop Mathematical Reasoning

Breedeen Pickford-Murray

The Bay School of San Francisco


Further beyond sudoku using logic puzzles to develop mathematical reasoning

A proof, that is, a mathematical argument, is [like] a work of fiction, a poem. Its goal is to satisfy. A beautiful proof should explain, and it should explain clearly, deeply, and elegantly…

-Paul Lockhart


Ccss mathematical practices

  • Make sense of problems and persevere in solving them.

  • Reason abstractly and quantitatively.

  • Construct viable arguments and critique the reasoning of others.

  • Model with mathematics.

  • Use appropriate tools strategically.

  • Attend to precision.

  • Look for and make use of structure.

  • Look for and express regularity in repeated reasoning.

CCSS Mathematical Practices


Further beyond sudoku using logic puzzles to develop mathematical reasoning

How Do You Know What to Do?

How Do You Record Your Thinking?

How Do You Convince Your Peers?


Puzzles

  • New Ideas

  • Engaging Format

  • Intuitive Yet Not Obvious

Puzzles


Yajilin

UnsolvedSolved

Yajilin

What is the goal of this puzzle?

What are the rules?

http://www.nikoli.com/en/puzzles/yajilin/


Further beyond sudoku using logic puzzles to develop mathematical reasoning

How Do You Know What to Do?

Make sense of problems and persevere in solving them.

Look for and make use of structure.


Yajilin1

UnsolvedSolved

Yajilin

http://www.nikoli.com/en/puzzles/yajilin/


Slitherlink

UnsolvedSolved

Slitherlink

What is the goal of this puzzle?

What are the rules?

http://www.nikoli.com/en/puzzles/slitherlink/


Further beyond sudoku using logic puzzles to develop mathematical reasoning

How Do You Record Your Thinking?

Reason abstractly and quantitatively.

Look for and express regularity in repeated reasoning.


Slitherlink1

UnsolvedSolved

Slitherlink

http://www.nikoli.com/en/puzzles/slitherlink/


Classic logic puzzle

Five NCTM participants ran a race.

  • Sadie came two places behind Christopher, but did not come in last.

  • Justin lost to Ashli, but beat Shauna.

  • Christopher did not come in first, Sadie did not come in last.

  • What place did each person come in?

  • Explain how you solved this puzzle, and prove that your answer is the only one that will work, using the statements above to support your argument.

Classic Logic Puzzle


Further beyond sudoku using logic puzzles to develop mathematical reasoning

How Do You Convince Your Peers?

Construct viable arguments and critique the reasoning of others.


Classic logic puzzle1

Five NCTM participants ran a race.

  • Sadie came two places behind Christopher, but did not come in last.

  • Justin lost to Ashli, but beat Shauna.

  • Christopher did not come in first, Sadie did not come in last.

  • What place did each person come in?

  • Explain how you solved this puzzle, and prove that your answer is the only one that will work, using the statements above to support your argument.

Classic Logic Puzzle


Further beyond sudoku using logic puzzles to develop mathematical reasoning

How Do You Know What to Do?

How Do You Record Your Thinking?

How Do You Convince Your Peers?


Further beyond sudoku using logic puzzles to develop mathematical reasoning

The Life-Cycle of Mathematics—Avery Pickford

Indirect reasoning

Induction

Two-column

Parity

Visual

Axiomatic

Be skeptical

Respectfully challenge

Reflect

Hunt for counter-examples

Estimate

Bound

Contextualize

Collect data

Pattern-sniff

Record results

How Do You Convince Your Peers?

How Do You Record Your Thinking?

How Do You Know What to Do?

Wild Guess

Educated Guess

Conjecture

Proof

Theorem


Q e d

  • Mathematical reasoning isn’t simple.

  • Start with something intuitive and engaging—but not obvious!

  • Push students to explain their thinking—at all levels.

  • Help students develop ways to record and organize their thinking.

  • Build formal written structures separately from introducing new mathematical content.

Q.E.D.


Further beyond sudoku using logic puzzles to develop mathematical reasoning

Gentlemen, that is surely true, it is absolutely paradoxical; we cannot understand it, and we don't know what it means. But we have proved it, and therefore we know it must be the truth.

-Benjamin Peirce


Further beyond sudoku using logic puzzles to develop mathematical reasoning

BreedeenPickford-Murray

The Bay School of San Francisco

[email protected]

@btwnthenumbers

The Space Between The Numbers

betweenthenumbers.wordpress.com


Further beyond sudoku using logic puzzles to develop mathematical reasoning

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