Blockchain
Explorer (Ages 8-12)
How Blockchain Works
Transactions are grouped into blocks, hashed cryptographically, and chained together. Tampering with one block breaks all later ones.
15 min
+15 XP
Cryptocurrency Wallets — Keys, Not Coins
A crypto wallet stores keys that prove you own coins. Private keys must be kept secret; lose them and you lose your money.
15 min
+15 XP
Ethereum and the EVM
Ethereum is a blockchain that runs programs called smart contracts. The EVM is its global computer.
15 min
+15 XP
What Blockchains Actually Are
A blockchain is a shared digital ledger. Many computers keep identical copies, making the data hard to fake.
15 min
+15 XP
Stablecoins And Value
Discover Stablecoins And Value as a core part of Blockchain. This lesson explains what it means, walks through a real example, introduces key terms, and includes three hands-on activities to help you understand and apply the idea.
15 min
+16 XP
Cryptocurrency Basics
Discover Cryptocurrency Basics as a core part of Blockchain. This lesson explains what it means, walks through a real example, introduces key terms, and includes three hands-on activities to help you understand and apply the idea.
15 min
+15 XP
Hash Functions Explained
Discover Hash Functions Explained as a core part of Blockchain. This lesson explains what it means, walks through a real example, introduces key terms, and includes three hands-on activities to help you understand and apply the idea.
15 min
+16 XP
Solidity Language Tour
Discover Solidity Language Tour as a core part of Blockchain. This lesson explains what it means, walks through a real example, introduces key terms, and includes three hands-on activities to help you understand and apply the idea.
15 min
+16 XP