3Doodler Start: Learn to Doodle 3D Shapes

Time Required: One 45-60 minute session
Skill Level: Beginner
Recommended Grades: K to 8th

In this activity, students will work in pairs to learn how to use the 3Doodler Start, practicing how to weld two-dimensional doodles to create three-dimensional doodles, as well as layer or spiral doodles.

Note: Any links outside of the3doodler.com are optional resources. We can’t ensure their upkeep or accuracy.

Lesson Plan


Step 1 - Preparation
  1. Print out and/or make copies of the Learn to Doodle Even More! Practice Packet for students.
  2. *Optional: Laminate Practice Guide as a reusable resource.
  3. Doodle 5 squares that will be used during instruction to weld together as a cube.
Step 2

Whole group: Ask students to compare and contrast 2D and 3D shapes. How are they different or the same? Note that 2D shapes, like squares, can be assembled to make a cube.

Step 3

Show 3D shape blocks and ask students to identify which 2D shapes are in each 3D block. Example: In a cube, there are 6 squares.

Step 4

Share the goal: Students will create a cube by welding together 6 doodled squares. Define the meaning of the word "welding" as used in doodling, i.e., to attach doodles together using warm Eco-Plastic. *Optional: Share the Poem.

Step 5

Model how to weld a cube using the Learn to Doodle Even More! Practice Packet. Doodle 1 square using the stencil in the Practice Packet. *See Learn to Doodle for tips on outlining and filling shapes.

Step 6

Show students the 5 squares you doodled before the lesson. Trim off any snags from sides of squares with a scissor. Weld squares together, two at a time, side by side, doodling a zigzag seam of plastic joining the two edges. Bend the two squares at a 90-degree angle. Continue joining squares, 2 at a time, until you've formed a cube.

*Weld sides of square first. Then weld on top and bottom. *If you do not want your seams to show, use the same color plastic for both the seam and fill.

Step 7

Hand out 3Doodlers and Practice Packets to partners. Circle to assist and assess as students work on doodling and welding squares to make cubes.

Step 8

Call students back to demonstrate how to create thickness or height by retracing lines as layers. Refer to the Practice Packet. When building up the height of an outline, use the index finger of your non-doodling hand to guide and keep layers straight. Stop to fix layers while plastic is still warm. Create spirals by doodling a string of plastic around a cylindrical object, like a pencil. Pull plastic off pencil when cool.

Step 9

Send students back to work in Practice Packets doodling layers and spirals.

Step 10

Call students back to the whole group: Demonstrate how to change colors. Eject an Eco-Plastic stick by double-clicking the orange button on the 3Doodler. Note that Eco-plastic will not eject if the plastic has been used to a short length. Suggest sharing/swapping 3Doodlers when an alternative color is needed.

Wrap Up

  • Have students share their cubes with the class.
  • Share on Twitter #3DoodlerEDU


  • The teacher will assess students' work based on their doodled products from the Practice Packet.
  • Ask: What did you find most challenging about welding/layering/spiraling? How did you overcome challenges?

Possible Extensions

Students will work with a partner to doodle a set of dice for a game with rules and instructions. Students will create a cube with different colors on each side.



  • Welding - Freshly extruded plastic can be used to weld two already finished pieces. The hotter the plastic used to weld two pieces, the better they will stick together. Touching the hot nozzle of the 3Doodler to the two pieces being joined just before beginning to extrude can remelt the pieces and help create an even stronger connection.

Educational Standards

Common Core

Engage effectively in a range of collaborative discussions (one-on-one, in groups, and teacher-led) with diverse partners on grade 3 topics and texts, building on others' ideas and expressing their own clearly.

In This Lesson

Students will participate in collaborative and partner discussions regarding the usage of the 3Doodle START to weld, layer, spiral shapes, and outlines to add thickness and dimension.

Common Core

Ask questions to check understanding of information presented, stay on topic, and link their comments to the remarks of others.

In This Lesson

Students ask questions and link comments to check their understanding of information regarding the usage of the 3Doodler START to weld, layer, spiral shapes, and outlines to add thickness and dimension.

CS Teachers

Decompose (break down) a larger problem into smaller sub-problems with teacher guidance or independently.

In This Lesson

Students will break down the process of learning how to use the 3Doodler START to weld, layer, spiral shapes, and outlines to add thickness and dimension.


Use technology to seek feedback that informs and improves their practice and to demonstrate their learning in a variety of ways.

In This Lesson

Students will use the 3Doodler to learn how to weld 3-dimensional doodles for curriculum-related projects.


Create original works or responsibly repurpose or remix digital resources into new creations.

In This Lesson

Students will use a 3Doodler to weld, layer, spiral shapes and outlines to add thickness and dimension.


Use collaborative technologies to work with others, including peers, experts or community members, to examine issues and problems from multiple viewpoints.

In This Lesson

Students will seek feedback from peers as they learn how to use the 3Doodler START, doodling lines, shapes and fill.

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