All posts by Steve Dickie

Apparently I’m a Total Nerd

So today I’m geeking out a bit. The school’s 3D printers are in another room on the other side of the building from my office. If you’ve ever used a desktop 3D printer then you know they have a tendency to fail. This can be a problem when you are not near the printer. A while ago I figured out that I could use a cheap webcam and stream the operation of our printers live to YouTube. It’s not riveting video, but it lets me keep an eye on things. However, when things go wrong I still have to run down the hall to stop the printer.

Enter Chrome Remote Desktop. This lets you use Chrome to remotely access a computer that you are signed into. It’s pretty easy to set up and I can even access it from outside of the school building. If I use the same computer that is running the 3D printer I can cancel the print job remotely. This means I could start a long print job and still monitor it from home. If things go wrong I can stop the printer from making a pile of spaghetti.

Is Keynote the best app to create widgets for your iBooks?

The cool thing about eBooks created with iBooks Author is they can be interactive. However, most of the traditional publisher offerings are only slightly better than their print counterparts. By and large, they don’t do a good job capitalizing on the features offered in this relatively new medium.  Most teacher created textbooks, by contrast, do a much better job using interactivity and are therefore much more compelling.

This interactivity typically comes in the form of widgets. The widgets built into iBooks Author will only take you so far. Before long teachers are looking for ways to create their own widgets. I’m going to contend that Keynote is the best app you can get to create custom widgets for your iBooks. That said, I should also mention that I’m a big fan of Tumult Hype, but I believe Keynote is the best place for most teachers to start. There are lots of great general tutorials out there for learning the basics of Keynote, some created by me and some created by other very talented people. These will get you up and running in Keynote, but are not focused specifically on using Keynote with iBooks.
I’ve created a number of posts showing how to use Keynote to enhance your iBooks. So, in an effort to win you over to my way of thinking, here are a variety of ways you can use Keynote to enhance your students’ learning.
Creating Interaction:
  • Interactive Maps – Create maps like the ones showed off in E.O. Wilson’s Life on Earth books. The same technique could also be used in a variety of widgets where you want to highlight or contrast various parts of an image.
  • Math Practice Widget – Build something like Tara Maynard’s ultra cool math practice widget. This is set up to allow students to get the level of help they need while working on problems.
  • Interactive Videos – Have a dialog with your students through video, where your students’ answers to questions lead to different responses from you. Get your students think, not just watching.
Creating other Cool Stuff:
Keynote is not nearly as powerful nor versatile as Hype, iAd Producer, or straight HTML and JavaScript. It is, however, much more accessible. In most cases if you have a Mac it’s most likely already on your hard drive and you’ve probably already used it.

Downsize Your iBook using Keynote

I like to embed a lot of videos in my iBooks Author projects. These videos can often push the size of my iBooks up to an unacceptable size. One way I get around this is to create YouTube widgets in a program like Hype or using a web service like Bookry. However, this means students must have in internet connection to view the videos. Requiring the internet can sometimes be a problem which is why I like to try to include full videos when possible.

As it turns out, many of my videos are screencast tutorials. These often simply show a static screen with my mouse moving to and clicking a button to bring us to the next static screen. This can easily be reproduced with a series of screenshots put into Keynote. I use an Animate Action or Magic Move Transition to move a cursor from one location on the screen to another, or to highlight a a particular item.  Then all I need is a voice over.

Currently audio files will not autoplay on the iPad, but videos will. So in-order to add a voiceover I need to add in a video. Now this seems like it might be a bit counter productive as I was trying to not add a video in the first place. The video I make for this is tiny, consisting of only a solid background and recorded audio. I make these using Quicktime. Simply select “New Screen Recording” from the “File” menu and then drag a rectangle over a plain white portion of your screen when prompted. I discussed using a video for a voiceover in my video on Tara Maynard’s Interactive Math Practice Widget.

You can see some examples of my finished video replacements in an iBook on using Google Drive in education I made for my school last summer. The content is slightly outdated now, but you can still see how I used Keynote to replace screencasts. In this iBook I didn’t use a single video nor HTML5 widget.

I should note that videos playing in a Keynote widget will not have video controls, so there is no way to pause them nor replay them. With this in mind I’d recommend adding linked buttons to replay a slide as well as buttons to go forward or back as needed. The replay button was not something I added to the Keynotes in my book, but I will in the future.

I wouldn’t replace all of my screencast videos but I will be using Keynote more and more in the future to replace videos. One of the things I like about replacing videos with Keynote is you can easily have playback require student input to progress. This is important for two reasons. First is the student is more likely to pay attention if they have to click to continue and secondarily the passes can give time for reflection or note taking.

CK12 to iBooks Author

Finding the perfect textbook for your class really is an impossible task. Each one you look at is missing some critical component or if one does have everything, it uses an approach that you think won’t work with your students. Even if you somehow find the perfect book, it is typically the most expensive book you’ve looked at. In the end you end up selecting a book that is the best compromise of several competing factors. Not the best but instead, the least bad. The alternative is to not use a textbook or to create your own textbook.

With this in mind I encouraged the teachers of our freshman Integrated Science Class to create their own textbook for the first year of our 1:1 iPad deployment. This was a huge undertaking so I encouraged them to dive into ck-12 to assemble a series of books to use with their students. The books were saved as ePubs and distributed through iTunesU.

The ePubs, while very nice, have some limitations. The ck-12 materials often have videos and interactive elements scattered throughout. In order to use these, the students must leave their book and go onto the web. Not a big deal, but often once students leave their books many never make it back again. For next year we want to make the books more encapsulated, removing the need for students to leave the book to work with the interactive elements. Enter iBooks Author. The last update Apple gave iBooks Author the ability to import ePubs. Now we can take the work that was already done and repurpose it.

Workflow:

  1. Create flexbook on ck-12 and download as ePub (done already)
  2. Import into your iBooks Author template of choice. All of the content will come in as a single chapter.
  3. Create a new chapter for each of the chapters in your original ePub
  4. From your chapter with everything copy all of the content for a chapter and paste it into the chapter you created for it. Keep going until you’ve done this with all the chapters.
  5. Work on Formatting: All of your images are “inline” you might want to use the Inspector to change them to Floating or Anchored so you can put them where you want them to be.
  6. More Formatting: Edit the text/paragraph styles used by ck-12 to be something you want (totally optional)
  7. Create Widgets for interactive content.
  8. Export as iBook and distribute or publish
Point 7, “Create Widgets” is the hard part. iBooks Author doesn’t give you the ability to embed most web content directly. It does, however, give you the ability to add in HTML5 widgets. I typically build my HTML5 widgets in Tumult Hype. Totally awesome program. I haven’t looked at the newest update yet but I will probably buy it. They do offer an educational discount, making it much more affordable. A less nerdy, as well as free, way would be to use Bookry to make your widgets. Once we get some of the books converted I’ll post them here.
Below is my walkthrough of using Hype to embed a YouTube video in your iBook. You could use the same process for a lot of other web content as well.

Presentations for Mercy TechTalk

I’ll be giving to presentations today at Mercy Tech Talk. Here are the links from my presentations:

3D Printing in Education – 11:10 in N-17
Curious about 3D printing? We will walk through the basics of 3D printing and introduce simple programs for creating 3D models suitable for printing. No previous 3D modeling experience is needed. We will also look at some ways 3D printing can be worked into the curriculum and for fundraising.

Flipping with an iPad – 1:00 in Drama Studio
Have you thought about making videos to support your instruction? Maybe even a full flip? With an iPad you can create and distribute videos for your students. We will investigate several apps and accessories you can use to make compelling content for your students without the need for a computer.

Interactive Maps with Keynote and Gimp

When people are learning to make iBooks with iBooks Author they often want to have cool widgets for their students to interact with. As I’ve shown in previous posts, you can create some pretty easily with Keynote. I really like showing teachers how to use Keynote to do this because if they use a Mac they already have it. When you couple this with a free image editor, Gimp, you can do some really cool stuff.

The example here is not one I’ve used to teach my students, but one I used at last year’s iBookHack. From a teaching standpoint it might not be very good, I’m not really sure since I don’t teach social studies. It’s just an example of how you might create an interactive map to use with your students. The first video below walks you through using Gimp to create your maps. The second shows you how to use Keynote to bring them together as an interactive widget you can drop into an iBook.


Interactive Practice Widget Built in Keynote

I’ve been involved in iBooks Author teacher training with Anthony DiLaura for a few years now. You can find out about our hackathon coming up this summer at the ibookhack site.

While working on the iBookHack project I’ve gotten to meet some amazing educators. One of these is Tara Maynard. Tara saw a cool HTML5 math practice widget in an iBook and she wondered if it would be possible to put something like it in her own books. I showed her how she might reproduce the basic idea of the widget in Keynote and she went on to create this great template. She has shared it so you can use it as a starting point for your own practice widget. If you need a little help you can check out my video below.

The problem is shown, if there are accessibility concerns a button is included that will read the problem aloud to the student. Each problem can provide a hint to help aid students in independent practice and finally the solution is provided so students can get instant feedback to see if they were correct. Since it is made in Keynote the problem, hints, or solution can include pictures or videos as well. Overall it is a great interactive element to include in an iBook and doesn’t take a lot of technical skills to implement.

The core idea of this widget centers on creating a “Links Only” presentation in Keynote. If you need a little more information on this you should check out another video I made, which is also included below.

Getting Started with 3D Printing – Find a problem to solve

This week I went high-tech to go low-tech. When I taught physics I taught with a student centered pedagogy called Modeling Physics. In Modeling we have student collect data and then use that data to construct models to explain physics. Basically students do labs, graph the data, find an equation that fits their graph and then they turn that equation into a generic equation that can be used in other situations. Everything works great if you can get the students to collect really clean data and if you can actually convince them to think.

I don’t teach physics anymore, but our new physics teacher, Vance, also uses the Modeling Method. He built some apparatuses last week end to collect really good acceleration data. This is just a wood disk with a golf tee glued to the center of each side. This rolls down a pair of rails and is slow enough to allow students to get some really good data. I’d thought about building these myself in the past, but I knew it would be hard to do and that I’d probably screw it up. So I never constructed any. Vance did a fine job in his construction, but he ended up having all the problems I knew I would have had.

Enter the 3D printer. Looking at Vance’s system I knew I could knock something out on the 3D printer that would work. This is one of the coolest things about owning a 3D printer. You will see problems and begin to envision solutions. Once you start doing this the easier it becomes. The only risk is that you will quickly assume the 3D printer is the best tool for all jobs. As awesome as it is, it is not always the best way to solve every problem.

I spent about 10 minutes in Tinkercad on my design and then it took about an hour and a half to print. Vance tells me it worked great for the lab. I’m already envisioning modifications for future investigations. The design could be easily modified to investigate rotational inertia and energy, but maybe I’ll leave it to students to create these new designs.

Acceleration Paradigm Lab – Teacher Notes

Materials (for each group):

  • 2 bricks with holes or grooved sides
  • 2 five foot sections of electrical conduit
  • 1 wood disk with a golf tee sticking out of the center of each side, or 1 3D printed disk with cones out of each side
  • Dry erase marker
  • A metronome set to 60 peats/minute (or a computer program) – One for the entire class
Basic Procedure:
  • Set the conduit up as a pair of rails spaced appropriately for your rolling disk
  • Let the disk roll down the rails
  • Mark the position of the disk at 1 or 2 second intervals
  • Create a position vs. time graph and find the equation that fits the data (should be a quadratic)
  • Create a velocity vs. time data set and graph from the position data using the secant line created by each pair of points on the position graph. This graph should be linear.
  • Note: If the incline is too steep it will slide rather than roll.
Class discussion:
  • I always have students use the actual variables in their equations, no x’s or y’s. In addition all constants need units.
  • Once students have equations for both their position and velocity graphs I ask them what each constant represents and how they know. This is pretty easy for the velocity graph, but a little harder for the position graph. It leads to some great conversations and ultimately to a pair of generic equations we will use for the rest of the kinematics unit.
My 3D Model:
This is a part 6 of my series on 3D Printers in Education. Go back to earlier parts in the 3D printer series: Part 1Part 5

Interactive Video Widgets in iBooks

For the last couple of summers I had the pleasure to work along Tony DiLauraDave Bast and some great educators committed to making their own content with hopes of replacing traditional textbooks at iBooks Hackathons. I’d put together some material for those hackathons and I thought I’d share some of it here.
When I teach I try to always ask questions and never give answers. I want my students to struggle a bit and discover the answers through experimentation and discussion. This is very difficult to do in the videos I make. Due to the nature of video I don’t really give students time to think, nor do I give them a chance to investigate different answers. Derek Muller hit on a solution to this on his Veritasium YouTube Channel. YouTube allows you to put clickable hotspots on videos. Derek uses these to link to other videos he’s made. He set up a kind of choose your own adventure allowing viewers to think about different answers to questions and each answer has it’s own video.
I thought this was an awesome way to get students thinking and set out to try it myself. But as it turns out, these hotspots don’t work on mobile devices, including iPads. We’re in the midst of becoming a 1:1 iPad school, so I don’t want to rely on cool internet features that I know won’t work on mobile devices.
After some though, I realized I could create the same sort of effect using either Keynote or Tumult Hype. Once created I can drop them into an iBook as an interactive widget and my students will be able to actually grapple with questions in their book rather than simply being presented with the answers. Each solution has its own advantages and disadvantages. Here’s the version I made with Hype (I’m not sure this link will work correctly) to use with my students.
One big advantage with Keynote is it is easy to work with and if you have a Mac you probably already have it. Keynote’s biggest disadvantage is there is no way to control the video once it starts in an iBook widget. The video starts and then runs to completion, no pausing or rewinding.
In Hype you do have the video controls. The other big advantage in Hype is you can embed YouTube videos. I don’t know of any way to have YouTube videos auto-play in Hype. As far as I know, there is currently no way to embed a YouTube video in a Keynote. Embedding YouTube videos means you must have internet access to view, but it keeps the iBook size down to manageable levels. Unfortunately Hype is not free. It costs $30, but if you’re going to be making iBooks it might be worth it in the long run. Make sure you buy it through the Tumult Education Store to get the discounted price.

Instructions:

Make your Keynote Presentation “Links Only”:

Keynote for Interactive Video:



Hype for Interactive Video:

Putting YouTube Videos in Hype:

Getting Started With 3D Printing – PLA vs. ABS

There are two main types of plastic used in most FDM printers, polylactic acid (PLA) and acrylonitrile butadiene styrene (ABS). ABS is the same plastic Legos are made from and PLA is a bioplastic typically derived from corn starch. I will not go into a lot of the technical differences, but will instead focus on the practical issues related to each type of plastic.

Each plastic has its own advantages and disadvantages. Most of the newest low cost printers available today will only print with PLA. In order to complete a successful print, the plastic must stick well to the print bed. Sometimes it may be beneficial to heat the print bed to 40-50°C for PLA. However, it is often not necessary and many commercially available printers designed to print with PLA do not have the ability to heat the print bed at all. ABS requires a heated print bed for parts to stick. It is necessary to heat the print bed to 110-130°C when printing with ABS. This is quite hot, remember water boils at 100°C.

There are other practical concerns related to both plastics to consider. ABS shrinks substantially more than PLA while cooling. This can often cause parts to warp. When a part warps the edges or corners lift off the platform. This can lead to a part becoming completely unstuck from the platform or even if it stays in place may be completely unusable. ABS also gives off some fumes while printing. They are not overwhelming, but they are noticeable. One of my colleagues has sever allergies and asthma and reacts to just about any type of smell or fumes in the air. She never had a problem with the ABS fumes in the room.

Since PLA doesn’t shrink as much as it cools it is much less prone to warping and the finished parts are much closer to the intended dimensions. This difference often doesn’t mean much. However, if you are printing something like a phone case it is much easier to design one that fits just right if you print with PLA rather than ABS.

Given the minimal shrinkage, lack of fumes, and no need for a heated bed you might be wondering why I’m even presenting a choice between ABS and PLA. PLA seems to be far superior in almost all respects. One factor to note, however, is it is far more finicky to print with. With PLA, if things are not perfect the printhead can become clogged. This is not a problem I’ve ever had with ABS.

I was so fed up with problems related to ABS that I’ve been printing exclusively with PLA for the last couple of years. For the 9 months, with my first generation Replicator, I have not been able to print something that takes more than an hour and a half before the print head jams. Often it jams much sooner. Newer printers may be more reliable, but I don’t have experience to speak to that. Yesterday I switched back to ABS and was able to do a two hour print of a comet and a five hour print of a fossil skull with no problems. For my printer I may switch over to mostly ABS and just print in PLA when I need something that fits precisely.

While I’m talking about Plastic I should mention that both types should be stored in sealed containers. Over time they will both absorb moisture and this could cause problems while printing. I use a container designed for long term storage of food and I toss in some silica gel to absorb moister. The container I use was less than $15 on Amazon and will hold two spools of plastic. The other bonus with using containers for storage is it will keep your plastic relatively dust free. If dust accumulates on the filament it can cause the print head to become clogged.

Go Back to earlier parts in the series: Part 1Part 4