Lesson 20: For Loops with Artist


In this lesson, students continue to practice for loops, but this time with Artist. Students will complete puzzles combining the ideas of variables, loops, and for loops to create complex designs. At the end, they will have a chance to create their own art in a freeplay level.


Creativity and critical thinking come together beautifully in this lesson. Students will continue their practice with for loops and variables while they create jaw-dropping images. This lesson inspires a creative mind while teaching core concepts to computer science.


Warm Up (15 min)

Main Activity (30 min)

Wrap Up (15 min)

View on Code Studio


Students will be able to:

  • Use `for` loops to change loop several times with different values.
  • Recognize when to use a `for` loop and when to use other loops such as `repeat` and `while` loops.



Heads Up! Please make a copy of any documents you plan to share with students.

For the Teachers

For the Students


  • For Loop - Loops that have a predetermined beginning, end, and increment (step interval).


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Teaching Guide

Warm Up (15 min)


On a board displayed to the entire class, draw (or display via projector) one of the final projects from the Course F Online Puzzles - 2018 - Website associated with this lesson. We recommend one of the following:

Ask the class how a computer might draw the drawing you displayed.

After a few predictions have been said, reply with for loops of course!

Tell the students they will soon be learning how to create these fine drawings using for loops and variables.

Main Activity (30 min)

Course F Online Puzzles - 2018 - Website

These puzzles are super fun, but it may be helpful for students to have protractors and scratch paper to see these designs made in the physical form. If that isn't an option in your class, try to get the students to trace on the computer screen with their fingers.

Wrap Up (15 min)


Having students write about what they learned, why it’s useful, and how they feel about it can help solidify any knowledge they obtained today and build a review sheet for them to look to in the future.

Journal Prompts:

  • What was today’s lesson about?
  • How did you feel during today’s lesson?
  • Draw one of the designs you made today. What was the code needed to create it?
  • What are some designs you would like to create? How do you think for loops or variables could help create those?

Standards Alignment

View full course alignment

CSTA K-12 Computer Science Standards (2017)

AP - Algorithms & Programming
  • 1B-AP-09 - Create programs that use variables to store and modify data.
  • 1B-AP-11 - Decompose (break down) problems into smaller, manageable subproblems to facilitate the program development process.

Cross-curricular Opportunities

This list represents opportunities in this lesson to support standards in other content areas.

Common Core English Language Arts Standards

L - Language
  • 5.L.6 - Acquire and use accurately grade-appropriate general academic and domain-specific words and phrases, including those that signal contrast, addition, and other logical relationships (e.g., however, although, nevertheless, similarly, moreover, in addition).
SL - Speaking & Listening
  • 5.SL.1 - Engage effectively in a range of collaborative discussions (one-on-one, in groups, and teacher-led) with diverse partners on grade 5 topics and texts, building on others’ ideas and expressing their own clearly.
  • 5.SL.1.a - Come to discussions prepared, having read or studied required material; explicitly draw on that preparation and other information known about the topic to explore ideas under discussion.
  • 5.SL.4 - Report on a topic or text or present an opinion, sequencing ideas logically and using appropriate facts and relevant, descriptive details to support main ideas or themes; speak clearly at an understandable pace.
  • 5.SL.6 - Adapt speech to a variety of contexts and tasks, using formal English when appropriate to task and situation.

Common Core Math Standards

G - Geometry
  • 5.G.2 - Represent real world and mathematical problems by graphing points in the first quadrant of the coordinate plane, and interpret coordinate values of points in the context of the situation.
MP - Math Practices
  • MP.1 - Make sense of problems and persevere in solving them
  • MP.2 - Reason abstractly and quantitatively
  • MP.4 - Model with mathematics
  • MP.6 - Attend to precision
  • MP.7 - Look for and make use of structure
  • MP.8 - Look for and express regularity in repeated reasoning
NBT - Number And Operations In Base Ten
  • 5.NBT.5 - Fluently multiply multi-digit whole numbers using the standard algorithm.

Next Generation Science Standards

ETS - Engineering in the Sciences
ETS1 - Engineering Design
  • 3-5-ETS1-1 - Define a simple design problem reflecting a need or a want that includes specified criteria for success and constraints on materials, time, or cost.