Everything

PythonBeginner robot

Add hours on a 24-hour clock

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JavaScriptBeginner robot

Add hours on a 24-hour clock

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PythonBeginner robot

Add in parts

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JavaScriptBeginner robot

Add in parts

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JavaScriptBeginner robot

Add two numbers

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JavaScriptBeginner robot

Add up a list

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PythonBeginner robot

All the factors

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JavaScriptBeginner robot

All the factors

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PythonBeginner robot

Binary card values

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JavaScriptBeginner robot

Binary card values

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PythonBeginner robot

Cards from the biggest down

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JavaScriptBeginner robot

Cards from the biggest down

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PythonBeginner robot

Count the even numbers

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PythonBeginner robot

Does it divide?

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JavaScriptBeginner robot

Does it divide?

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PythonBeginner robot

Double it

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JavaScriptBeginner robot

Find the biggest number

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PythonBeginner robot

Greet someone

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JavaScriptBeginner robot

Greet someone

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PythonBeginner robot

How many cards do I need?

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JavaScriptBeginner robot

How many cards do I need?

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PythonBeginner robot

Inside angle of a shape

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JavaScriptBeginner robot

Inside angle of a shape

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PythonBeginner robot

Is it even?

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PythonBeginner robot

Power of a number

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JavaScriptBeginner robot

Power of a number

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PythonBeginner robot

Say hello

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JavaScriptBeginner robot

Say hello

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PythonBeginner robot

Spot a parity error in a row

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JavaScriptBeginner robot

Spot a parity error in a row

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PythonIntermediate alien

Add a parity bit

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PythonIntermediate alien

Add hours on a 12-hour clock

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JavaScriptIntermediate alien

Add hours on a 12-hour clock

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PythonIntermediate alien

Barcode: the last digit

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JavaScriptIntermediate alien

Barcode: the last digit

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PythonIntermediate alien

Book code: the last digit

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JavaScriptIntermediate alien

Book code: the last digit

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PythonIntermediate alien

Count the dots on the cards

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JavaScriptIntermediate alien

Count the dots on the cards

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JavaScriptIntermediate alien

Count the vowels

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PythonIntermediate alien

Count the words

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JavaScriptIntermediate alien

Factorial

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PythonIntermediate alien

Fizz and Buzz

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PythonIntermediate alien

Is it a prime?

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JavaScriptIntermediate alien

Is it a prime?

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PythonIntermediate alien

Leap years

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JavaScriptIntermediate alien

Leap years

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PythonIntermediate alien

Months later

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JavaScriptIntermediate alien

Months later

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PythonIntermediate alien

Name the music note

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JavaScriptIntermediate alien

Name the music note

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PythonIntermediate alien

Palindromes

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PythonIntermediate alien

Prime factors

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JavaScriptIntermediate alien

Prime factors

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PythonIntermediate alien

Reverse the words

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PythonIntermediate alien

Show a number with five cards

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JavaScriptIntermediate alien

Show a number with five cards

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JavaScriptIntermediate alien

Sort a list by hand

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JavaScriptIntermediate alien

Turn text around

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PythonAdvanced astronaut

Add two video lengths

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JavaScriptAdvanced astronaut

Add two video lengths

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JavaScriptAdvanced astronaut

Binary search

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PythonAdvanced astronaut

Card number: the last digit

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JavaScriptAdvanced astronaut

Card number: the last digit

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PythonAdvanced astronaut

Check any barcode

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JavaScriptAdvanced astronaut

Check any barcode

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JavaScriptAdvanced astronaut

Fibonacci, fast

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PythonAdvanced astronaut

Find the flipped card

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JavaScriptAdvanced astronaut

Find the flipped card

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PythonAdvanced astronaut

Find the prime numbers

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PythonAdvanced astronaut

Flatten a list

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PythonAdvanced astronaut

Is this book code real?

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JavaScriptAdvanced astronaut

Is this book code real?

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PythonAdvanced astronaut

Is this card number possible?

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JavaScriptAdvanced astronaut

Is this card number possible?

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PythonAdvanced astronaut

Write a number in binary

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Science projects Beginner robot

Binary numbers (unit)

Difficulty 1/5 On other sites Screen-free lesson

A CS Unplugged unit with several hands-on, screen-free lessons about binary numbers.

Science projects Beginner robot

Codes for letters using binary representation

Difficulty 1/5 Do it here Screen-free lesson

A hands-on, screen-free CS Unplugged lesson for ages 5-7 (about 45 minutes), part of the 'Binary numbers' unit.

Digital art Beginner robot

Colour by numbers

Difficulty 1/5 Do it here Screen-free lesson

A hands-on, screen-free CS Unplugged lesson for ages 5-7 (about 45 minutes), part of the 'Image Representation' unit.

Science projects Beginner robot

Divide and conquer

Difficulty 1/5 Do it here Screen-free lesson

A hands-on, screen-free CS Unplugged lesson for ages 5-7 (about 30 minutes), part of the 'Searching algorithms' unit.

Science projects Beginner robot

Error detection and correction (unit)

Difficulty 1/5 On other sites Screen-free lesson

A CS Unplugged unit with several hands-on, screen-free lessons about error detection and correction.

Science projects Beginner robot

Finding shapes

Difficulty 1/5 On other sites Screen-free lesson

A classroom activity linking the 'Kidbots' unit with geometry (ages 5-7). For an adult to run with children.

Science projects Beginner robot

Fitness unplugged

Difficulty 1/5 Do it here Screen-free lesson

A hands-on, screen-free CS Unplugged lesson for ages 5-7 (about 45 minutes), part of the 'Kidbots' unit.

Science projects Beginner robot

Growing into a butterfly

Difficulty 1/5 On other sites Screen-free lesson

A classroom activity linking the 'Sorting networks' unit with biology (ages 5-7). For an adult to run with children.

Science projects Beginner robot

How binary digits work

Difficulty 1/5 Do it here Screen-free lesson

A hands-on, screen-free CS Unplugged lesson for ages 5-7 (about 45 minutes), part of the 'Binary numbers' unit.

Science projects Beginner robot

How many guesses?

Difficulty 1/5 Do it here Screen-free lesson

A hands-on, screen-free CS Unplugged lesson for ages 5-7 (about 30 minutes), part of the 'Searching algorithms' unit.

Science projects Beginner robot

Image Representation (unit)

Difficulty 1/5 On other sites Screen-free lesson

A CS Unplugged unit with several hands-on, screen-free lessons about image representation.

Science projects Beginner robot

Investigating variations using the Sorting Network

Difficulty 1/5 Do it here Screen-free lesson

A hands-on, screen-free CS Unplugged lesson for ages 5-7 (about 30 minutes), part of the 'Sorting networks' unit.

Science projects Beginner robot

Kidbots (unit)

Difficulty 1/5 On other sites Screen-free lesson

A CS Unplugged unit with several hands-on, screen-free lessons about kidbots.

Science projects Beginner robot

Move to a number

Difficulty 1/5 On other sites Screen-free lesson

A classroom activity linking the 'Kidbots' unit with numeracy (ages 5-7). For an adult to run with children.

Science projects Beginner robot

Moving in a shape

Difficulty 1/5 On other sites Screen-free lesson

A classroom activity linking the 'Kidbots' unit with geometry (ages 5-7). For an adult to run with children.

Science projects Beginner robot

Parity magic

Difficulty 1/5 Do it here Screen-free lesson

A hands-on, screen-free CS Unplugged lesson for ages 5-7 (about 30 minutes), part of the 'Error detection and correction' unit.

Science projects Beginner robot

Reinforcing numeracy through a Sorting Network

Difficulty 1/5 Do it here Screen-free lesson

A hands-on, screen-free CS Unplugged lesson for ages 5-7 (about 45 minutes), part of the 'Sorting networks' unit.

Science projects Beginner robot

Reinforcing sequencing in binary number systems

Difficulty 1/5 Do it here Screen-free lesson

A hands-on, screen-free CS Unplugged lesson for ages 5-7 (about 60 minutes), part of the 'Binary numbers' unit.

Science projects Beginner robot

Rescue Mission

Difficulty 1/5 Do it here Screen-free lesson

A hands-on, screen-free CS Unplugged lesson for ages 5-7 (about 30 minutes), part of the 'Kidbots' unit.

Science projects Beginner robot

Retelling a story

Difficulty 1/5 On other sites Screen-free lesson

A classroom activity linking the 'Sorting networks' unit with speaking (ages 5-7). For an adult to run with children.

Science projects Beginner robot

Searching algorithms (unit)

Difficulty 1/5 On other sites Screen-free lesson

A CS Unplugged unit with several hands-on, screen-free lessons about searching algorithms.

Science projects Beginner robot

Sorting networks (unit)

Difficulty 1/5 On other sites Screen-free lesson

A CS Unplugged unit with several hands-on, screen-free lessons about sorting networks.

Science projects Beginner robot

Squeezing pictures into less space

Difficulty 1/5 Do it here Screen-free lesson

A hands-on, screen-free CS Unplugged lesson for ages 5-7 (about 45 minutes), part of the 'Image Representation' unit.

Science projects Beginner robot

Storytelling

Difficulty 1/5 On other sites Screen-free lesson

A classroom activity linking the 'Kidbots' unit with speaking (ages 5-7). For an adult to run with children.

Science projects Beginner robot

Binary Art

Difficulty 1/5 On other sites Screen-free lesson

A classroom activity linking the 'Binary numbers' unit with art (ages 8-10). For an adult to run with children.

Science projects Beginner robot

Binary Candles or Normal Candles on your Cake

Difficulty 1/5 On other sites Screen-free lesson

A classroom activity linking the 'Binary numbers' unit with writing (ages 8-10). For an adult to run with children.

Science projects Beginner robot

Binary Name Necklaces

Difficulty 1/5 On other sites Screen-free lesson

A classroom activity linking the 'Binary numbers' unit with art (ages 8-10). For an adult to run with children.

Science projects Beginner robot

Binary Patterns

Difficulty 1/5 On other sites Screen-free lesson

A classroom activity linking the 'Binary numbers' unit with art (ages 8-10). For an adult to run with children.

Digital art Beginner robot

Binary Tunes

Difficulty 1/5 On other sites Screen-free lesson

A classroom activity linking the 'Binary numbers' unit with music (ages 8-10). For an adult to run with children.

Science projects Beginner robot

Codes for letters using binary representation

Difficulty 1/5 Do it here Screen-free lesson

A hands-on, screen-free CS Unplugged lesson for ages 8-10 (about 45 minutes), part of the 'Binary numbers' unit.

Science projects Beginner robot

Divide and conquer

Difficulty 1/5 Do it here Screen-free lesson

A hands-on, screen-free CS Unplugged lesson for ages 8-10 (about 30 minutes), part of the 'Searching algorithms' unit.

Digital art Beginner robot

Drama or video activity

Difficulty 1/5 On other sites Screen-free lesson

A classroom activity linking the 'Searching algorithms' unit with drama, art (ages 8-10). For an adult to run with children.

Science projects Beginner robot

How binary digits work

Difficulty 1/5 Do it here Screen-free lesson

A hands-on, screen-free CS Unplugged lesson for ages 8-10 (about 45 minutes), part of the 'Binary numbers' unit.

Programming languages Beginner robot

How binary digits work: programming challenges

Difficulty 1/5 On other sites Screen-free lesson

Programming challenges (Scratch, Python or blocks) to go with the 'How binary digits work' lesson, from the 'Binary numbers' unit. Best done with a grown-up.

Science projects Beginner robot

How many guesses?

Difficulty 1/5 Do it here Screen-free lesson

A hands-on, screen-free CS Unplugged lesson for ages 8-10 (about 30 minutes), part of the 'Searching algorithms' unit.

Science projects Beginner robot

Instructional writing

Difficulty 1/5 On other sites Screen-free lesson

A classroom activity linking the 'Error detection and correction' unit with writing (ages 8-10). For an adult to run with children.

Science projects Beginner robot

Investigating variations using the Sorting Network

Difficulty 1/5 Do it here Screen-free lesson

A hands-on, screen-free CS Unplugged lesson for ages 8-10 (about 30 minutes), part of the 'Sorting networks' unit.

Digital art Beginner robot

Music activity

Difficulty 1/5 On other sites Screen-free lesson

A classroom activity linking the 'Searching algorithms' unit with music (ages 8-10). For an adult to run with children.

Science projects Beginner robot

Parity magic

Difficulty 1/5 Do it here Screen-free lesson

A hands-on, screen-free CS Unplugged lesson for ages 8-10 (about 30 minutes), part of the 'Error detection and correction' unit.

Programming languages Beginner robot

Parity magic: programming challenges

Difficulty 1/5 On other sites Screen-free lesson

Programming challenges (Scratch, Python or blocks) to go with the 'Parity magic' lesson, from the 'Error detection and correction' unit. Best done with a grown-up.

Science projects Beginner robot

Product code check digits

Difficulty 1/5 Do it here Screen-free lesson

A hands-on, screen-free CS Unplugged lesson for ages 8-10 (about 30 minutes), part of the 'Error detection and correction' unit.

Programming languages Beginner robot

Product code check digits: programming challenges

Difficulty 1/5 On other sites Screen-free lesson

Programming challenges (Scratch, Python or blocks) to go with the 'Product code check digits' lesson, from the 'Error detection and correction' unit. Best done with a grown-up.

Science projects Beginner robot

Quick card flip magic

Difficulty 1/5 On other sites Screen-free lesson

A classroom activity linking the 'Error detection and correction' unit with numeracy (ages 8-10). For an adult to run with children.

Science projects Beginner robot

Reinforcing numeracy through a Sorting Network

Difficulty 1/5 Do it here Screen-free lesson

A hands-on, screen-free CS Unplugged lesson for ages 8-10 (about 45 minutes), part of the 'Sorting networks' unit.

Science projects Beginner robot

Reinforcing sequencing in binary number systems

Difficulty 1/5 Do it here Screen-free lesson

A hands-on, screen-free CS Unplugged lesson for ages 8-10 (about 60 minutes), part of the 'Binary numbers' unit.

Science projects Beginner robot

Sending a rocket to Mars

Difficulty 1/5 Do it here Screen-free lesson

A hands-on, screen-free CS Unplugged lesson for ages 8-10 (about 30 minutes), part of the 'Kidbots' unit.

Programming languages Beginner robot

Sending a rocket to Mars: programming challenges

Difficulty 1/5 On other sites Screen-free lesson

Programming challenges (Scratch, Python or blocks) to go with the 'Sending a rocket to Mars' lesson, from the 'Kidbots' unit. Best done with a grown-up.

Science projects Beginner robot

The Great Number Hunt (Sorted)

Difficulty 1/5 Do it here Screen-free lesson

A hands-on, screen-free CS Unplugged lesson for ages 8-10 (about 45 minutes), part of the 'Searching algorithms' unit.