3 of 12

Notes for teachers

This lesson should take place in a classroom for 1 or more hours.

Students may work individually with collaboration with other students.

Emphasis on measurement both the cookie cutter and cookie dough..

This lesson also involves precision and scale.

List of Materials

3D printer
PLA Filament
3D printing software (We will use tinkercad)
3D printing hardware (A computer with slicing software such as Cura)
Chromebooks
Rulers with centimeters
Drawing materials / IDEAS engineering journal

4 of 12

Standards

7.G.A Draw, construct, and describe geometrical figures, and describe the relationships between them.

7.MP.6 Mathematically proficient students clearly communicate to others using appropriate mathematical terminology, and craft explanations that convey their reasoning. When making mathematical arguments about a solution, strategy, or conjecture, they describe mathematical relationships and connect their words clearly to their representations. Mathematically proficient students understand meanings of symbols used in mathematics, calculate accurately and efficiently, label quantities appropriately, and record their work clearly and concisely.

Standards

7.CS.HS.1 Design projects that combine hardware and software to collect and exchange data. Collecting and exchanging data involves input, output, storage, and processing. When possible, students should select the hardware and software components for their project designs by considering factors such as functionality, cost, size, speed, accessibility, and aesthetics.

5 of 12

Objective:

The student will design a 3D printed cookie cutter that is no more than 12 cm tall, 8 cm wide and 20cm deep.

6 of 12

Agenda (50 minutes)

10 minutes: Brainstorm the project/ constraints of making cookie cutter

10 minutes: Research and narrow down cookie cutter idea

30 minutes: Create cookie cutter design

Print time depends on size of project

7 of 12

Intro

You own a custom cookie business and just had an order come in for some fun never before seen cookies. You want to go all out and come up with a custom shaped cookie. Keep in mind that the cookie dough may spread when you bake it. Your cookie cutter must be no more than 12 cm tall and 8 cm wide and should cut through a quarter inch sheet of cookie dough.

8 of 12

Hands-on Activity Instructions

Find a partner. *Someone you can bounce ideas off of. You will be responsible for your own project.
Google search “your shape” svg file free download.

9 of 12

Hands-on Activity Instructions

Download your file and save it to your computer.
Open up tinkercad select your profile and create a new design.
Select import from the screen and import your SVG file you just saved.
Select your image and do an outer line fill with rounded corners height of 5 mm width of 15 mm.
Copy/paste the image but DO NOT MOVE IT. change the color of the new shape. Do an inner line fill with sharp corners height of 15 mm and width of 3 mm.
Group the images before adjusting scale and shape. If you have extra time you may allow students to create their own measurements.

10 of 12

Hands-on Activity Instructions

After getting basic properties down students can adjust their images as needed. They may need larger or smaller cookies, remove or add details, adjust heights.
Students can download their work from Tinkercad or your designing software and load them in to your slicing program depending on your 3D printer.
Print and adjust. You can limit the amount of prints each student gets to help them focus on their design.

11 of 12

Assessment

Scale drawing / schematic- Students should draw a life size image of their drawing including measurements down to the mm before printing.

Engineering journal with documented changes.

The student will have a final product that is usable or showed growth from first prototype to 3rd.

12 of 12

Differentiation

Students can be allowed to work with a partner throughout the entire project.

Students can create a simple cookie cutter design with the Scribble tool

Remediation

Extension/Enrichment

Students can figure out how to create 3D cookie cutter designs. These have parts that are cut out like a normal cookie, and other parts that are imprinted/pressed to make a pattern. (Dinosaur spots in this example)