20 Questions

What Sprite Am I?

Adapted from CS4ALL NYC

Round one: Let’s Play!

• Find one friend from your table
• Person 1: silently choose a sprite from Array One (on the next slide)
• Person 2: ask only yes or no questions to guess the sprite
• Record each question asked
• Switch roles and play again!

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Array One:

Refine your questions

• Compare your question sets
• How many questions did you have to ask?
• What questions did you have in common?
• What questions helped to guess the sprite?
• What questions did not help?
• Create a set of questions to efficiently guess the correct sprite

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Round two: Test your questions

• Play again multiple times, testing out your question set
• Use only the set of questions to guess sprite
• Do not ask additional questions

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Array One:

Evaluate

• Evaluate the question set
• Were you able to guess correctly using only the question set?
• Did you need every question?
• Could you make your question set even more efficient??

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Create a question flowchart

• Work with your partner to create a flowchart of the most efficient algorithm to determine a sprite from this new array.

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Array Two:

Differentiation/Extensions:

• Heads Up Version
• Cut out individual sprites
• One member selects sprite from stack without looking at selected card
• Holds up sprite facing group
• Asks the group yes or no questions
• Group records questions
• Challenge students using Arrays Three or Four
• Use sprites from different platforms (like ScratchJr., Scratch, CodeSpark)

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Array Three:

Array Four:

Print Arrays

colored

Array One:

Array Two:

Array Three:

Array Four:

Print Arrays

black & white

Array One:

Array Two:

Array Three:

Array Four: