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4 Unplugged Classroom Activities for Hour of Code

Jacqui Murray

Hour of Code arrives December 3-9, 2018. This is a time when teachers show students why they should love – not fear – coding. Students find out that these classroom activities -- often seen as geeky or impossible -- aren't. They're actually fun. Every year in preparation for December, I post lots of coding classroom activities that students can complete with their computers, on the Internet, or using iPads, but this year, I want to do something different. Let's go back to the roots of coding. The idea started as a clever way to teach students to think critically and problem-solve. The easiest way was to gamify coding, put students on a digital device they loved, and set them free. One hour, according to Hour of Code, would show them that deep thinking was fun and problem-solving was exhilarating.

I happen to agree. Some of my most gratifying moments are when I accomplish the impossible, unravel a Mobius Strip-like problem, or force myself to do what I've never before done. Hour of Code does that every year for many students. But here's my issue: Too often, kids forget that the goal is to practice critical thinking and problem solving, not pursue a career in programming.

This year, I want to reinforce that goal by stepping away from technology. I want students to recognize that these skills -- critical thinking and problem-solving -- apply to any part of life, even without a computer, iPad, or smartphone in hand. All kids need is their brain, which happily, every child carries with them.

Here are some of my favorite unplugged classroom activities:

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Classroom Activities: Hour of Code Unplugged

Ages 4 and up, the grandfather of Hour of Code offerings, recognizes the importance of critical thinking outside of coding and programming. To reinforce this, they offer a slew of unplugged critical thinking activities to pursue during the Hour of Code week.  This includes non-computer activities such as Happy Maps, Graph Paper Programming, Dice Race, Binary Bracelets, Mad Glibs, Unspotted Bugs, and more. These cover coding topics such as:

  • Abstraction
  • Algorithms
  • Binary images
  • Computational thinking
  • Conditionals
  • Debugging
  • Functions
  • Loops
  • Variables

These projects variously include a lesson plan, instructions, assessments, a video on understanding the topic and the activity, and more. When you click on the link, it provides lesson plans with preferred age groups and a grid filled with 39 unplugged activities organized by age and concept.

Thinkersmith's Unplugged Hour of Code Activity

Ages 4-7

My Robotic Friends is a one-hour introductory non-computer activity where students learn to program a human robot. Break students into pairs and have one student write the steps required to do something (the video suggests stacking cups). The second student (called a robot) takes those directions and follows them exactly to see if they can do what is asked. If they can't, the student who wrote the steps debugs their instructions until they are clear and the robot student can accomplish what was expected. Here's a full lesson plan on My Robotic Friends (also available in Spanish) and a quick video.

This is a fun and thought-provoking way to discuss sequencing, attention to detail, and debugging problems and is easily completed in one hour though kids may want to take longer.

Computer Science Unplugged

Ages 5-14

CS Unplugged is a collection of free teaching materials that teach computer science through engaging games and puzzles, many accomplished with cards, string, crayons, and lots of running around. This teacher-oriented website provides everything you need to teach computer science without a computer. If you're thinking that's an oxymoron, then you're exactly who this is intended for. Topics include binary numbers, kidbots, sorting networks, error detection and correction, and searching algorithms. Each topic variously includes unit plans, lesson plans, teaching videos, curriculum integration activities, printables, and programming exercises -- all without a computer.

This is one of the original unplugged websites and includes a link to the classic offerings if you're looking for those.

Code HS Color by Pixel

Ages 12-17

In this one-hour artistic project, students "Code" their own art with pixels by learning about coordinates, the purpose of pixels, and how to create drawings by setting pixels to different colors. The lesson first teaches the basics of computer graphics before setting students loose to create their own color by pixel program. There are four parts, each covering a specific topic. The lesson plan includes class discussion, vocabulary, questions, examples, and step-by-step directions.

This is a great introduction to graphic design for art students interested in that side of art.


It's easy to conflate coding with computers but its core is problem-solving and critical thinking. These existed before digital devices and will prevail if an EMP Pulse wipes out everything with electronics. Remind kids that their brains are bigger than computers, more resilient than digital devices, and more portable than any other type of assistant.

-- published first on TeachHUB

More on Games and Simulations

Zapzapmath–Gamify any Math Curriculum

5 Resources to Gamify Student Writing

C-STEM Studio — A Great Way to Blend Math and Robotics

Hour of Code Bundle of Lesson Plans

Jacqui Murray has been teaching K-18 technology for 30 years. She is the editor/author of over 100 ed-tech resources, including a K-8 technology curriculum, K-8 keyboard curriculum, K-8 Digital Citizenship curriculum. She is an adjunct professor in ed-tech, Master Teacher, webmaster for four blogs, an Amazon Vine Voice reviewer, CAEP reviewer, CSTA presentation reviewer, freelance journalist on ed-tech topics, contributor to NEA Today and TeachHUB, and author of the tech thrillers, To Hunt a Sub and Twenty-four Days. You can find her resources at Structured Learning.