MATH: Old MacDoodle’s-Doodles (Shapes, Sorting, Categorizing)

Time Required: Two 45-minute sessions
Skill Level: Beginner
Recommended Grades: K to 2nd

In this activity, students will work in pairs to analyze a set of shapes, determine common attributes and then draw a stencil for another shape that would fit into each of Old MacDoodle's shape sets. In the final phase of this activity, students will assemble their shapes to create a doodle-animal to place on Old MacDoodle's farm.

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Lesson Plan


Step 1

Whole Group: Review different attributes of shapes, i.e., number of sides, length of sides, vertices, straight and curved lines.

Step 2

Introduce the Old MacDoodle Song. Pass out the Old MacDoodle Song Worksheet. First sing alone, and then together with students.

Step 3

Project your tablet or computer screen on the board. Review the first set of shapes titled, "MacDoodles" from Old MacDoodle's Doodles Worksheet. Emphasize that some of the shapes on the page are MacDoodles and some are not. Go through the questions and prompt students to note each shape's attributes, commonalities, and differences.

Step 4

Instruct students on how to write up the rules for a MacDoodle based on their previous responses to questions on the Old MacDoodle's Doodles Worksheet.

1. MacDoodles are made up of straight lines.

2. All sides are the same length.
*MacDoodles may have 2 or 3 sides.
*Note that all rules must be true in order for a shape to be a MacDoodle.

Step 5

Demonstrate how to draw another shape that is also a MacDoodle, e.g., a rhombus with 4 sides of the same length.

Step 6

For Kindergarten students, complete the entire worksheet together.

For first and second grade students, allow the students to complete the remainder of shape-sets with a partner.

Step 7

Model how to use the 3Doodler to outline and fill the shapes that students have drawn stencils for, i.e., MacDoodles, Doodle-Diddles, and Oodle-Doodles.

*It is easier to fill by segmenting off shapes into two fill areas.


Create a rectangular base for the doodle to stand on. Weld the doodle to the base with extruded filament.

Wrap Up

Model how to assemble and weld the 3Doodled shapes together to create a new doodle for Old MacDoodle's farm. It can be an animal or a made up creature. Allow students to decorate their assembled doodle with the 3Doodler, adding eyes, a nose, a mouth, ears, a tail, etc...

Students will share their assembled doodles with the class. Note which shapes were used. Students will share their doodles on Twitter. @3Doodler #3DoodlerEDU


The teacher will observe students' work and input during discussions.

Possible Extensions

Students will create a shape farm for Old MacDoodle. Students will use colored paper, markers and 3Doodlers to create a background for Old MacDoodle's farm.


  • attributes - qualities or characteristics ascribed to someone or something.

  • categories - any of several fundamental and distinct classes to which entities or concepts belong.

  • classification - systematic arrangement in groups or categories according to established criteria.

  • collaboration - to work jointly with others or together especially in an intellectual endeavor.

  • compare - to examine the character or qualities of especially in order to discover resemblances or differences.

  • contrast - to set off in contrast : compare or appraise in respect to differences

  • polygon - a plane figure with at least three straight sides and angles, and typically five or more.

  • problem-solving - the process or act of finding a solution to a problem.

  • rectangle - a parallelogram all of whose angles are right angles; especially : one with adjacent sides of unequal length.

  • rhombus - a parallelogram with four equal sides and sometimes one with no right angles.

  • shapes - the quality of a distinct object or body in having an external surface or outline of specific form or figure.

  • square - a two-dimensional shape with four sides of equal length and four right angles.

  • trapezoid - a quadrilateral having only two sides parallel.

  • triangle - a polygon having three sides.

Educational Standards

Common Core

Recognize and draw shapes having specified attributes, such as a given number of angles or a given number of equal faces.

In This Lesson

Students will doodle shapes, weld shapes together, and add embellishments with the 3Doodler.

Common Core

Participate in collaborative conversations with diverse partners about grade 2 topics and texts with peers and adults in small and larger groups.

In This Lesson

Students will discuss shapes and rules with the whole class and with their partners.

Common Core

Sort words into categories (e.g., colors, clothing) to gain a sense of the concepts the categories represent.

In This Lesson

Students will determine common attributes of shapes and sort them into categories.

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 classifying shapes, and will address their differences and commonalities. They will answer questions, draft rules, draw stencils and doodle shapes.


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 create doodled shapes in accordance with specific attributes.


Exhibit a tolerance for ambiguity, perseverance and the capacity to work with open-ended problems.

In This Lesson

Students will demonstrate willingness and competency within an open-ended task, which has more than one possible outcome.


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

In This Lesson

Students will use a 3Doodler to creatively reinterpret shapes.


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 throughout all phases of this activity.

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