Hour of Code

Join over 1,000,000 Grokkers from around the world and do an hour of code! No experience required.

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Suitable for Grades 3-12. Pick a fun activity and get started!

Monster Maker! (Blockly)

Use drag-and-drop blocks to write your own programs, learn about sequence and ordering, and create fun monster characters!

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Is Eliza Human? (Python)

Use the programming language Python to build a friendly chatbot called "Eliza". Can she fool your friends into thinking she's a human?

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Flags of the World (Python Turtle)

Use the programming language Python and instruct a turtle to draw flags from around the world! How many countries do you know?

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Frozen Fractals (Python Turtle)

Use the programming language Python and instruct a turtle to draw fantastic snowflakes with code! Brrr, is it getting cold in here?

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Frozen Fractals (Blockly Turtle)

Build programs using friendly blocks and instruct a turtle to draw fantastic snowflakes with code! Brrr, is it getting cold in here?

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Virtual Pet (Python micro:bit)

Get started with the BBC micro:bit. Use the Python programming language to make a pet that you can feed and play with! No micro:bit required.

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Virtual Pet (Blockly micro:bit)

Get started with the BBC micro:bit. Use friendly blocks to make a virtual pet that you can feed and play with! No micro:bit required.

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Hydrangea Danger (Blockly Turtle)

This activity is designed to introduce branching. Use the Blockly version of Python and its turtle module to draw and colour hydrangea flowers!

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Emoticon Madness (Python)

Ever wanted to create your own emoticon? Use the programming language Python to explore emoticons and text manipulation.

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Space (Blockly Python)

Use the visual programming language Blockly to investigate space and reach for the stars.

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Disease Epidemic (Python)

Use the programming language Python to model a disease outbreak. Can you solve the curious case of the glowing nose?

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The Dark Tunnel (Python)

Use the programming language Python to create a simple game (or MUD). Can you find your way through the dark tunnel?

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Teach an Hour of Code today!

Track student progress

Register your students for free accounts so you can track ther progress on our state-of-the-art teacher dashboard. Get quick updates at a glance, or drill down to see submissions.

Teacher notes included

Teacher notes are embedded in the tutorials providing a relevant guide right where it’s needed. We also provide lesson plans with fun unplugged activities!

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