Lesson: SuperStar Rocketry 2 – 3D Printing Lesson

When I first started teaching I got offered an incredible budget to set up my STEM program. The only caveat was that I buy a 3D printer with some of the money. The challenge however, was that I’d never heard 3D printing before, let alone how to design a 3D Printing Lesson. What I needed was something simple, engaging, adaptable, and quick to learn. I did internet research, and though there are some good resources now, at the time there really weren’t. Instead I designed my own curriculum for grade 7 & 8. After twelve or so refinements I came up with the 3D Printing Lesson you’re about to read.

The below 3D Printing Lesson assumes that you already know how to use your 3D printer, and are familiar with model rocketry in general. As of this posting, I don’t have a recommendation for a 3D printer. That said, Make Magazine does a great annual article evaluating what’s out there. Depending on which make & model printer you buy, training may be available from the manufacturer. Alternatively there are lots of how to articles, and videos online. One day I hope to buy a kit, and make my own printer. When/if that happens I will document the process. If you are unfamiliar with Model Rocketry though, I have good news. Why you should use model rocketry is covered here, and Lesson 1 in the series is here. This lesson will refer back to lesson 1 often so, give it a read if you haven’t already.

In case you haven’t read my other Lesson posts it is worth noting that my style of writing a lesson plan isn’t what you may be used to. I write out the plan in a manner that is meaningful to me as a teacher. The first thing I typically need to know is what materials I need, followed by what to teach, followed by how to teach it, and finally the applicable standards. Here we go!

3D Printing Lesson: Introduction.

In this lesson students design several model rocket nose cones based on established shapes using computer aided design software. Students print out each nose cone, equip a model rocket with it, launch the rocket, and record the data. The same rocket body is used for each launch to protect the integrity of the data. This lesson is designed for use in grades 7 or 8, and takes approximately 1 academic quarter the way I teach it.

I have my students build rockets from scratch, but if you use kits this lesson could take less time. This lesson could also take less time if you give students measurements to work with. I ask my students to develop size specs on their own. This lesson could certainly be used as a performance task for performance based assessment. I also teach this lesson along with Rocketry Lesson 1 as opposed to separating them in order to save time.

3D Printing Lesson: Materials.

• 3D Printer & Supplies.
• Rocketry Supplies (see Lesson 1).
• A computer (Chromebooks work fine), or tablet for each student.

 

3D Printing Lesson: What to Teach.

• Computer Aided Design.
• 3D printing.
• The Iterative Design Process.
• The Use of Data in Design Decisions.
• Everything from Rocketry Lesson 1.

 

3D Printing Lesson: How to Teach

If you are using kits, begin with constructing the kits. If you are doing a from scratch build to a certain set of instructions like I do, you can start with that. In either case, while construction is happening, I go over the Parts of a Model rocket from lesson 1, but as I am having my students design the nose cone for the model rocket, I go into greater detail on the nose cone as shown below.

I apologize for the quality of the drawing, clearly I teach Tech Ed not Art. Since we are creating the nose cones we need to have a shared vocabulary when discussing a given design. When we get to the actual design phase I will give my students some specifications for measurements, but for now they just need to know what the various parts are called.

Baseline Launch or CAD?

Once you have a shared vocabulary established, and rockets assembled you can go one of two ways. You could put some standard nose cones on the rockets, have a launch, and record data for a baseline.  I take the other tack,  which is to begin with the use of the Computer Aided Design tool. Great News! If you use the tool I use (which is free, web based, and functions well on Chrombooks) called TinkerCad, it comes with a whole suite of fantastic tutorials that guide your students through the various aspects of the software. For this 3D printing lesson you can allow students time in class to work through the tutorials, assign it as homework, or do a combination of the two.

I have my students do the tutorials in Basics, Accessories, Gadgets, and Miniatures. One word of caution here, if your students are under the age of 13 setting up an account takes parental approval. The site uses a question about birth date to verify age when an account is set up, but doesn’t do any other type verification.

Design

Once you & your students have established a shared vocabulary, learned how to use CAD software, and have built rockets you can begin to design nose cones. Prior to beginning the actual design of their first nose cone I ask my students to research model rocket nose cone shapes. I am trying to get them to find conical, ogive, parabolic, and blunt shapes. At this point I ask them to make a prediction about which nose cone will give the rocket the highest altitude. Once they have done their research I give my students a set of digital calipers, and have them get the interior diameter of their rocket air-frame. The should also measure the exterior diameter. Their first assignment is to design a Conical Nose Cone.

Nose Cone Design Requirements

• The nose cone must fit snugly into the rocket air-frame.
• The nose cone must have a shock cord mount.
• The height of the cone is twice the exterior diameter of the body tube (2D).
• The total height of the full nose cone including body tube mount is three times the exterior diameter (3D).
• The shoulder will measure 2 millimeters.

 

In all likelihood, your students will need to go through 2-3 iterations just to get the nose cone to fit inside the air-frame correctly, and meet the specifications. Here is one I designed for the project. See the Pro Tips below to learn from my experience.

Design & Printing Pro Tips:

• Print the shock cord mount beside the cone & superglue it onto the bottom.
• Make an indent in the bottom of the cone for the shock cord mount to sit in.
• In your 3D printing Software, there should be an add feature to add several additional objects to your print, use it.
  • If you follow this pro tip assign students a number or letter to have as a unique identifier such as the “X” on my example nose cone.
• Make certain to have your students name the files in a descriptive way.
  • For instance, if the class is grade 7 quarter 1, the student’s name is John Smith, and the nose cone is conical I have them name the file: G7Q1ConicalNCJS.
• Teach students how to use the Align Tool in TinkerCad so you can have everything centered.
• Students will save themselves heartache if they fully understand the Ruler Tool in TinkerCad.
• For each design after the first they copy (Ctrl+C) & paste (Ctrl+V) their body tube, and shock cord mount assembly from the successful conical design. Those two features don;t change from cone to cone.
• When printing nose cones set the initial fill setting to 0.00%. This gives you a very light nose cone.
  • You can expand this lesson by messing with the fill, and seeing how much the weight of the nose cone changes with the fill percentage. You can further expand it by seeing how much nose cone weight effects altitude.

 

Next Steps

Once you’ve got conical nose cones that fit snugly into the students rockets you’re ready to move on. Schedule a launch, launch rockets, collect data, and go over that data as a class. I go into more detail on both data collection, and expansions in Lesson 1. After the first launch move to a different nose cone shape, and do as many launches as you can. The more launches your class does, the more interesting your data will be. For comparison, the most launches I have achieved within a quarter was 3.

Standards:

• All Standards covered in lesson 1.
• Future Tech from 3D printing.
• CAD introduction from TinkerCad.
• Additional math standards based on the calculations you have your students perform.

 

Expansion, Assessment, & Conclusion

I have expanded this lesson by complicating the nose cones in various ways. One good way to complicate the design of a nose cone includes eliminating the square shoulder in favor of a parabolic shoulder. One way to complicate the data, and analysis of a launch is to include meteorological data. The data can be further complicated by adding speed, and velocity calculations. This lesson really is almost infinitely expandable with a bit of creativity.

To assess this unit I have posed questions relating to a fictional rocket launch in short answer form. If you are working towards performance based assessment, you can give your students a design challenge with a goal of highest, or lowest altitude as an assessment.

Have found this lesson useful? If so, please use the social media to share it with as many teachers as you know. If you would like to keep up to date with new STEM lessons, research, learning tools, and book reviews please sign up for updates.

 

Lesson: SuperStar Rocketry 1 – Intro to Rocketry & Data

 

5…4…2…1…LAUNCH, LAUNCH, LAUNCH! Finally, the moment you’ve been waiting for; an actual lesson plan for rocketry! Without a solid foundation of common vocabulary, data use, aerodynamics, and science any other lesson in rocketry will fail to launch (Sorry, I couldn’t resist), as such we need to begin at the beginning. Don’t worry, this isn’t rocket science. Wait, it IS rocket science (Last one, I promise)! Still, don’t worry even if you don’t have any experience teaching a rocketry lesson. After reading this post I am certain you’ll be able to guide your students to learn everything they need to know to get started. Also, rockets are fun!

This particular lesson is designed for middle school (Grades 6-8) with solid fuel model rockets in mind, but with a little creativity you could easily adapt it to Bottle Rockets, or perhaps even Stomp Rockets. I teach this lesson as part of any rocketry unit I do. Whether the kids have been given this info before or not, they get it again. The purpose for the repetition is that often, my students won’t see me for a year or more. In that instance their brains have been stuffed so full of other stuff that the likelihood of them remembering Newton’s Laws, The Parts of a Model Rocket, Safe Launch Procedures, How to Collect Launch Data, or How to Use an Electronic Spreadsheet are exceptionally low.

It is also worth noting that my style of writing a lesson plan isn’t what you may be used to. I write out the plan in a manner that is meaningful to me as a teacher. The first thing I typically need to know is what materials I need, followed by what to teach, followed by how to teach it, and finally the applicable standards. Here we go!

Lesson Materials:

• A Rocket Launch System: This would include the launch platform, and the launcher itself. There are many, many options. I recommend a launch system that requires two buttons to be pressed before the rocket fires. That way the teacher can control one button, and the student rocketeer the other. That said, any rocket launch system will have a safety switch, so don’t break the bank.
• An educator bulk pack of model rocket kits (along with whatever additional materials the kit recommends): You are looking for enough kits for each student to have a rocket, and you want them to be on the heavier side (between .8 and 1 ounce is ideal). The reason for this is that  most schools are launching on sports fields so, you want a relatively low altitude which will result in a smaller potential landing area. Alternatively, you can scratch build rockets by a wide variety of methods. I will eventually cover how to scratch build a rocket while only ordering a few pieces I haven;t figured out how to fabricate yet, but this isn’t that post.
• An educator bulk pack of Model Rocket Engines. You are looking for the A8-3 sized engine. Again, this is a low power engine which will limit your altitude.
• Altitude tracking system: I use the one here (starting on page 109), but I found plans for this one while looking for a link to the one I use, and may be moving to it in the near future. You could also buy this one. You will need three systems that are exactly the same.
• Three Stop Watches
• Three Clipboards
• Paper & Pencils
• Video Recording Device that can record in Slow Motion & Take high quality photos.

 

What to Teach:

 

• Parts of a Model Rocket (Technology): If you later do any design units you will want to revisit this topic. Rocket design with 3D printing will be covered in another post.
• How to build a Model Rocket (Technology)
• Newtons Laws of Motion (Science): You can get math heavy or math light with this topic depending on what your students can manage.
• Aerodynamics (Science)
• Model Rocket Safety Code (Technology)
• Using spreadsheet software (Technology)
• Collecting & Using Data (Math)
• Engineering Documentation (Engineering)

 

How to Teach:

 

• Parts of a Model Rocket: I have taught this bit before as a lecture, and as a research project. I have found that for my particular program lecture works best because I combine this unit with a study of how Nose Cone shape effects altitude. As such I have more pieces to discuss than are found on kit based rockets. Whether you have the kids research it first or not, make sure you have a discussion about it, that way you can be certain you’re all on the same page in terms of vocab.
• How to build a Model Rocket: Depending on the age level you work with, and the ability of your students you can either go through the instructions step by step, or have the kids try to read the instructions that come with the kits. I have done kits with 4th graders and gone through all the steps, 6th graders and let the kids figure it out, and 8th graders where I went through each step. You know your students best, and should make the determination about how much hand holding to give them.
• Newton’s Laws of Motion/Aerodynamics: I really love these topics as research tasks. My school happens to be a google school so we have access to google classroom. This is one of those instances where google classroom is fantastic. For this lesson, students do online research about Newton’s Laws, define them, and detail how they apply to model rocketry in the classroom. Students cite their sources by providing links to their research after the body of their post.  Aerodynamics is taught similarly, and ask them to detail how aerodynamics will effect the altitude of a model rocket. I prefer to do it this way because my class time is better spent building rockets than lecturing. This method also shows me exactly what each student knows, as opposed to a lecture where I have no immediate feedback.
• Data Collection/Using Data/Spreadsheet Software: These topics we work through as a class. On Launch day I have the students collect altitude data using the altimeters, and flight time data with the stop watches. I also have them write down if the recovery device deployed or not as well as any other observations they want to make. You can make up a worksheet for this or just have the kids write it out. I have had them write it out thus far, but plan on using a worksheet moving forward. After the launch, we put the data into a spreadsheet, and find averages. We also attempt to determine why any variation occurred in our data by recalling observations. With google classroom I can give my students each a copy of a spreadsheet with the basic structure, but no data. This saves a lot of time.
• Engineering Documentation: As the students are building their rockets, I try to have them take build in progress pictures. Students are not the designers of this build, but I want to teach them about documentation because later units are design focused. For me, efficiency is critical, and as such I teach as many skills a possible in a unified manner. I also have them digitize any notes they take by photographing them. Again, I am prepping them for design units later on.
• Model Rocket Safety Code: This portion is always done by modeling. We discuss the safety code generally then go through launch procedures several times before we go out to the launch area. Safety is absolutely crucial to model rocketry. Part of that is developing good launch procedures and sticking too them. There is a ton of information on the National Association of Rocketry web site about what good launch procedures look like.

 

(Protip: Make certain you put together a kit, and launch a rocket yourself before doing it with the kids. Sometimes strange instructions are given,and you will want to be prepared. You will also find likely trouble spots during your own build where you will want to give extra instruction. Don’t be afraid of not knowing the answer, but make sure you are setting reasonable expectations with your students.)

 

Applicable Standards:

 

NGSS Middle School:

 

Forces and Interactions

Energy

Common Core Math Grade 7:

The below standards are just what I have come up with. You apply math standards in how you present, and analyze the data. The great thing about rocketry is that since it is so data heavy, you can use whatever math you want to in order to present that data.

The Number System

Expressions & Equations

Geometry

Engineering & Technology:

There really isn’t a design task with this unit, but it is prep for some major design lessons. The best I would say for engineering is that you make an argument for teaching engineering mindset. We teach engineering mindset through the collection of data, and taking build in progress pictures. Again, as no national standards exist teachers need to see what they can fit in, and where to fit it in. The same with technology, this unit is all about transportation technology, and uses a lot of information technology as vehicles to teach the science & math.

Teaching Technology & Engineering in this manner is perfectly fine, these subjects should be integrated in everything we do in Science & Math. We need to make certain however, that we have other lessons where our students can actually make something.  For those occasions where they can’t, a good thing to do is to find away to integrate the Engineering Habits of Mind into your lessons.

That about covers the first rocketry lesson. This could be the beginning of a unit, or a stand alone event. It could build to design tasks using 3D prionters, or fabricating rockets from found materials. In any case you always need to start somewhere, in terms of rocketry as a vehicle for SuperStar STEM integration this is a perfect place to start. Thanks for your time, and don’t forget to sign up for updates in the footer below.

Books as SuperStar STEM Teaching Resources: Top 5

 

Despite the massive tonnage of information available on the internet from places like this little ‘ol blog I found that when I started my STEM teaching journey I really didn’t even know what to look for. Couple that with my lifelong love of reading (including a Masters in English), and it’s only natural that I’d turn to books. Specifically, books on Amazon, and ideally books that I could pop onto my kindle reading app with nothing more than a click of a button. Even with the incredible ease of purchase, there was still the matter of finding the right book, and reading it of course.

If you do a search for STEM on Amazon (or anywhere else for that matter) you get a pile of stuff that you don’t really know is applicable, genuine, good, or even useful for what you are doing. It is my humble hope here to give you some incite about what books I have found to be good investments to increase my effectiveness as a STEM teacher.

In the list below I have linked the Amazon listing where possible. I have linked the actual physical book even in cases where there is a Kindle option to give you the choice of what format to buy it in. Unless noted otherwise, I have actually read the books listed below and applied some or all of what they contain to my actual classroom practice. In the interest of full disclosure I want you to know that if you buy one of these books after clicking on the link provided below I will get a small commission from Amazon. Buying in this manner will help to keep the site up and running while keeping me motivated to create more free content for you to enjoy.

First, lets discuss classroom management. I put this first because without a solid classroom management system in place you won’t be able to effectively teach anything, let alone project based STEM. The very best resource on classroom management that I have ever seen is:

Whole Brain Teaching for Challenging Kids: (and the rest of your class, too!)

by Chris Biffle

 

I use the advice in the book above many times per day every day. It teaches teachers how to set, and enforce classroom expectations while at the same time keeping the classroom environment light, and conducive to engaged learning. I recommend this book to literally every single teacher I meet.

Next, I want to recommend a book on STEM as a generalized topic of education. Regardless of the specific STEM content you are working with, there is a general way I feel professional educators should go about teaching it. We need to be encouraging a few specific traits in our students that STEM lends itself well to. Traits such as problem solving, growth mindset, creativity, and grit are crucial not only to real world STEM endeavors, but to life in general. As such we should be developing our curriculum as a set of design challenges. In order to figure out the best way to do this I found this book:

Invent To Learn: Making, Tinkering, and Engineering in the Classroom

by Sylvia Libow Martinez, and Gary S. Stager 

 

 

I have read this book several times, and am always inspired to make my lessons better when I do. It talks about the history of Project Based Learning, and gives STEM teachers some valuable advice about how to teach the engineering design process. Just by absorbing this book you will become a more effective STEM educator.

We started out here with classroom management, and moved into STEM generally. Now it’s time to dive into some specific content areas. For me, one of the most effective content tools for STEM Education is model rocketry. In fact, I have written a whole post on why I think its effective, what national standards apply to it, and why you should have it as one of your units. That post can be found here. If you are going to dive into rocketry in your classroom, whether your dive is shallow or deep, there is one definitive book out there that will cover everything you need to know to get started. It has been revised seven times to keep up with advancing understanding, and was initially written by one of the founders of the model rocketry hobby. This book is literally, THE resource for model rocketry.

Handbook of Model Rocketry, 7th Edition (NAR Official Handbook)

by G. Harry Stine, and Bill Stine 

 

 

This book is not only a fantastic read, but covers the subject in such incredible detail that it’s hard not to be able to teach rocketry well after reading it. I have been doing rockets with my students in one form or another for the past three years, and still refer to this text at least once per week. If you are going to do rocketry you need this book.

The two main systems I work with in my classroom are rockets & robots. Specifically, in terms of robots I use Lego Mindstorms Ev3 for Education. I have already outlined general rocketry in a post, and will do the same with robots in the future (though as of this posting my next post is going to be a rocketry lesson plan) Books on Ev3 for educaiton are few, and far between, at least when I was looking so most of my lesson ideas have come from a collection of web based portals (which I will outline in another post), but there is one book I have found to be indispensable to my teaching practice.  When I had 1 week to figure out how to teach robotics this book saved my bacon.

Classroom Activities for the Busy Teacher: EV3 Paperback

by Dr Damien Kee

 

This particular book is a bit on the spendy side at almost $55.00, and only comes in print, but it really is a fantastic resource. I encourage anyone who is just starting an Ev3 curriculum, or even seasoned pros to give it a read. When I was starting it really helped me get through the sticky bits of this stupendous learning tool.

Finally, I would be remiss in a Top 5 STEM Teaching Books post if I didn’t have a Raspberry Pi book. I mention the Pi in my Top Five STEM Learning Tools post, and fully intend to spend a good deal of time on the blog writing about projects, lessons, and uses for the Pi. As such I wanted to make sure I listed a book. Unfortunately, unlike the Lego Ev3 book challenges there are just so many great Raspberry Pi books that picking just one is tough to do. What I had to do is narrow down my selection by focusing on a book that will fit into my own curriculum. Here’s what I came up with:

Programming the Raspberry Pi, Second Edition: Getting Started with Python Paperback

by Simon Monk

 

 

Again, in the interest of full disclosure I actually have the First Edition of this book, and though I have read it, I haven’t applied it in my classroom yet. Programming with Python, which is actual coding is a bit of a sticky wicket for the grade levels I teach. I have done some Linux & Python work with some of my more advanced grade 7 & 8 students, but hesitate to add coding into my curriculum as an actually unit. As I have learned in the past three years, there are some concepts that even I can’t teach to every single 7th or 8th grader in 21, 45 Minutes sessions (the average number of days in a standard quarter which is all I get them for). That said, if I ever move to High School, or ever feel bold enough to try it in grade 8, this book would be the basis of my unit.

That wraps up our Top 5 Books post, but stay tuned to the site for more Top 5 posts, Lesson Plans, product evaluations, and general discussion about STEM education. The very best way to do that is to sign up for my newsletter in the lower right hand corner of this page. Thanks for stopping by!