Computer Science
Grade 3
20 min
Strong Passwords: Keeping Your Accounts Safe
Learn about creating strong and secure passwords.
What you'll learn
- Identify at least three different examples of strong passwords and explain why they are strong.
- Create a strong password that is at least 8 characters long and includes a mix of uppercase letters, lowercase letters, and numbers.
- Explain why using personal information, like your name or birthday, in a password makes it weak.
- Apply the concept of password strength by evaluating two different passwords and determining which one is stronger and why.
Tutorial Preview
1
Introduction & Learning Objectives
Learning Objectives
Identify the difference between a strong and a weak password.
List at least three ingredients of a strong password (uppercase letters, lowercase letters, numbers, symbols).
Explain why passwords should be kept private.
Create a strong password using a memorable phrase.
Use a simple conditional (IF-THEN) to check if a password meets strength criteria.
Explain that a password is a form of data that protects their information.
Imagine you have a secret treasure chest! 💎 What kind of special, tricky key would you create to make sure only YOU can open it?
Today, we are going to learn how to create special, secret keys for our online accounts, called passwords. A strong password acts like a super-strong lock, keeping our games, schoolwork, and private informa...
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Key Concepts & Vocabulary
TermDefinitionExample
PasswordA secret word or mix of letters, numbers, and symbols that you use to get into your accounts.A password for your game account could be 'Tr33Hous#1'.
AccountYour own special place on a website or app, like your character in a game or your profile for school.Your Google Classroom account or your Minecraft account.
Private InformationInformation about you that you should keep secret, like your full name, address, or your password.Your home address is private information.
Strong PasswordA password that is long and uses a mix of different character types, making it hard for others to guess.'R@inb0wDr@g0n!' is a strong password.
Weak PasswordA password that is short, simple, and easy for someone else to guess.'cat' or '1234'...
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Core Syntax & Patterns
The Mix-It-Up Rule
Strong Password = Uppercase Letters + Lowercase Letters + Numbers + Symbols
Don't use just one type of character. A great password is like a trail mix with lots of different ingredients. The more types of characters you use, the stronger your password is.
The Length Rule
IF a password has 8 or more characters, THEN it is stronger.
Short passwords are easy to guess. Always try to make your password at least 8 characters long. Think of it like building a longer fence to protect your yard.
The Secret Rule
Your password is for your eyes only.
Never share your password with anyone except a trusted grown-up, like a parent or teacher. Don't write it on a sticky note on your computer or tell your best friend. It's your secret key!
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Challenging
Maria's dad made a password rule: 'Take the name of your favorite planet, capitalize the first letter, add your age, and end with '#?'.' If Maria is 8 years old and her favorite planet is Mars, what is her password?
A.mars8#?
B.Mars8#?
C.mars#?8
D.Mars#?8
Challenging
Imagine a password system where 'e' is replaced with '3', 'o' is replaced with '0', and 't' is replaced with '7'. How would the phrase 'robot remote' be represented in this system?
A.r0b07 r3m073
B.robot r3mot3
C.r0bo7 rem0te
D.r0b0t r3m0t3
Challenging
A password checker gives `cat` a score of 1. It gives `Cats` a score of 3. It gives `Cats123!` a score of 9. What is the MOST LIKELY reason the score for `Cats123!` is so high?
A.Because it is a long word
B.Because it uses the word 'cat'
C.Because it uses four different types of characters (upper, lower, number, symbol)
D.Because it ends with an exclamation point
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Frequently asked questions
What grade level is "Strong Passwords: Keeping Your Accounts Safe"?
Strong Passwords: Keeping Your Accounts Safe is a Grade 3 Computer Science lesson on ExcelOS.
What will I learn in Strong Passwords: Keeping Your Accounts Safe?
You'll be able to: Identify at least three different examples of strong passwords and explain why they are strong; Create a strong password that is at least 8 characters long and includes a mix of uppercase letters, lowercase letters, and numbers….
Is "Strong Passwords: Keeping Your Accounts Safe" free to practice?
Yes. You can read the tutorial preview for free, and signing up for a free ExcelOS account unlocks the full tutorial and all practice questions with instant feedback.
How many practice questions are included with Strong Passwords: Keeping Your Accounts Safe?
This lesson includes 49 practice questions across multiple difficulty levels, each with instant feedback and explanations.