Dual Extrusion DNA Tiles

thingiverse

Lesson plans and lab work are now available on my teacher pay teacher site, https://www.teacherspayteachers.com/Product/Dual-Extrusion-DNA-RNA-Manipulative-Lab-1-3452084. This is a dual extrusion remix of my popular DNA/RNA manipulative set. When I tested this in class, some students had trouble seeing the letters on the tiles if the room lighting was dim. To help with visual impairments, you can print these in bold contrasting colors. Future versions will include braille on the pieces. This is a remix of http://www.thingiverse.com/thing:1259352. It's designed to model DNA, RNA, DNA/RNA coding, and all other processes of DNA/RNA transcription. I'm also working on a CRISPER/Cas9 restriction enzyme expansion set so students can explore gene editing technology. Printing instructions: The base tiles are marked as ptA, while the letter inlays are ptB. Use dual extrusion settings in Cura to print them together. You can use this with the restriction enzyme set or amino acid set to learn how to transcribe DNA to RNA to protein. Print Settings: Printer Brand: LulzBot Printer: TAZ 5 Rafts: Doesn't Matter Supports: Doesn't Matter Resolution: .3 - .1 Infill: 5% Notes: Printed on a dual extruder, print with an ooze shield and tower. Post-Printing: Remove the ooze shield and sand off any rough edges. These should lie flat to stack easily. How I Designed This: This is a remix of my original DNA/RNA manipulative set that I made in TinkerCAD. I'll post a video on how to set up files for dual extrusion. Custom Section: Project Dual DNA/RNA Use the instructions from http://www.thingiverse.com/thing:1259352 to write your lesson plan. This dual-colored set of tiles provides a vibrant splash of color for this set. You can use this to test and explore dual 3D printing in class. If you have students with visual impairments, or poor lighting in your room, these high-visibility tiles can help in class. Overview & Background: For this project, you can do the following: Explore how to 3D model a dual extrusion print. Use this file as a set for dual extrusion 3D printing. Use this set to explore DNA/RNA. All other overviews can be seen in the remix http://www.thingiverse.com/thing:1259352. Beforehand, review basic inheritance, Mendelian genetics, and heredity. Audience: This is intended for middle school to college-level biology classes. This works great for home school students. Subjects: Middle School, High School, AP, and college-level biology. Possibly include coding in computer programming. Standards: See http://www.thingiverse.com/thing:1259352 for standards. Lesson / Activity: See http://www.thingiverse.com/thing:1259352 for activity and lessons. Duration: This can take 2 weeks to a month or more depending on the depth of your lesson plan. Preperation: See http://www.thingiverse.com/thing:1259352 for teacher prep. You'll need a dual extrusion 3D printer to print this set of tiles. I used a Luzbot Taz 5 with a dual extruder. References: The tiles came from a paper design in a popular middle school science textbook. Use your text to model how DNA and RNA is replicated. Assesment: See http://www.thingiverse.com/thing:1259352 for assessment. Handouts: Lesson plans and handouts will be posted for sale on my teacher Pay Teacher webpage.