# Guess the Elf Boolean Coding Activity for Christmas

Have you ever played the game Guess Who? Then you’ve used Boolean logic! Learn about boolean and comparison operators with this Guess the Elf boolean coding activity!

Boolean logic sounds like a pretty complex concept, but it’s actually very easy to understand. Booleans are a type of data that has two values either true or false that can be used to evaluate logical questions.

Booleans are named after Philosopher and Mathematician George Boole, who first defined an algebraic system in the mid 19th century.

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## How are Booleans used in Coding?

Booleans are used to produce more effective search results by using Boolean functions to eliminate or provide search parameters for logical questions.

You start off with the idea that a statement is either true or false. It can’t be anything else. After your statement, you can form other statements that are true or false by combining the statements with a Boolean function such as AND and OR.

## About Guess Who? Santa’s Elves Boolean Coding Activity

This activity focuses on the comparison operators and boolean operators in selection statements.

== and != are comparison operators

AND and OR are boolean operators

== means “is equal to?” and != means “is not equal to?”

An Elf must meet both conditions in an AND statement and one condition of an OR statement.

Each comparison is a boolean and results in either a True or False answer. Use the selection and boolean statements to Guess the Elf.

## How to Play Guess the Elf Boolean Coding Activity

Print out the Guess the Elf Workbook and cut out the elves. Start with all of the elves facing up and flip them over as you work through the code.

### Guess Who? Santa’s Elves for Grades K-3

In the printable workbook, the left column shows the questions asked in typical Guess Who format and are great for grades K-3.

Use the questions and answers to present kids with statements regarding the elf. For example, if the question says “Does your elf have brown hair? TRUE” express it in a statement like “The elf we are looking for has brown hair.”

### Guess Who? Santa’s Elves for Grades 3-8

In the printable workbook, the right column presents selection and boolean operators and is ideal for grades 3-8. Make sure to go over the boolean and comparison operators before starting the activity.

Make copies of the handout and allow kids to work through the groups of code. Take a poll of which elf might be the answer and then go through the problem together.

## Guess the Elf #1

if hairColor == “Brown” OR hasHat == True: flipCardOver()

if hairColor != “Orange”: flipCardOver()

if hasRosyCheeks == True : flipCardOver()

FRITZ

### What does this question look like in a two-player Guess Who game?

Does your elf have brown hair? FALSE

Is your elf wearing a hat? FALSE

Does your elf have orange hair? TRUE

Does your elf have rosy cheeks? FALSE

## Guess the Elf #2

if gender != “Male” AND hasHat == True: flipCardOver()

if hairColor == “Black” OR hasRosyCheeks != True: flipCardOver()

if hasHat == True: flipCardOver()

if gender != “Female”: flipCardOver()

SPARKLE

### What does this question look like in a two-player Guess Who game?

Is your elf a male elf wearing a hat? FALSE

Does your elf have black hair? FALSE

Does your elf have rosy cheeks? TRUE

Is your elf wearing a hat? FALSE

Is your elf a male elf? FALSE

## Guess the Elf #3

if hasHat != True: flipCardOver()

if gender == “Female” OR hairColor == “Orange”: flipCardOver()

if hatColor != “Red” OR hasRosyCheeks == True: flipCardOver()

JOHNNY

### What does this question look like in a two-player Guess Who game?

Does your elf have a hat? TRUE

Is your elf a female elf? FALSE

Does your elf have orange hair? FALSE

Is your elf’s hat red? TRUE

Does your elf have rosy cheeks? FALSE

## Guess the Elf #4

if hasHat != True OR hatColor == “Green”: flipCardOver()

if hasRosyCheeks != True: flipCardOver()

if hairColor == “Orange” AND hairStyle != “Pigtails”: flipCardOver()

if hairColor == “Brown” OR hairColor == “Black”: flipCardOver()

TRUDY

### What does this question look like in a two-player Guess Who game?

Does your elf have a hat? TRUE

Is your elf’s hat green? FALSE

Does your elf have rosy cheeks? TRUE

Does your elf have orange hair and no pigtails? FALSE

Does your elf have brown hair or black hair? FALSE

## Check out more Christmas STEAM and coding activities!

PIN THIS IMAGE TO SAVE THIS CHRISTMAS CODING ACTIVITY

## Christmas Coding Activities

Find more Christmas coding activities to work on computational thinking and beginning coding skills!

## Meet Toni, the Maker Mom behind Our Family Code

Hey there, I’m Toni! I’m a software engineer and Maker Mom that finds my joy in unleashing my children’s curiosity by exploring STEAM concepts with my fantastic five!

When I’m not chasing toddlers or raising tweens, you can find me tearing things up and putting them back together over here at Our Family Code.

I am the owner and content creator of multiple educational websites designed to increase access to STEAM & STEM education with a focus on teaching computer science and coding to kids of all ages!

You can also find out more about me by visiting ToniGardner.com!

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