Thursday, July 28, 2022

Jacdac and Micro:Bit 2.0–First Look

Learning about Jacdac devices was my incentive to buy a Micro:Bit 2.0 The Micro:Bit 2.0 has a number of upgrades and new features from the original. These include a microphone and a speaker among others. That is probably justification enough to get an upgrade but being curious about the Jacdac devices, which requires the newer model, was the deciding factor. I am really enjoying spending time with external devices and the Jacdac devices are really easy to use.

I purchased the Micro:Bit from AdaFruit (micro:bit v2 Go Bundle - Batteries and USB Cable Included) Actually I bought two  because, well, why not? I bought the Kittenbot Jacdac Kit for micro:bit V2 from KittenBot My hope is that more manufacturers and suppliers will be offering Jacdac over time.

The kit comes with:

  • Jacdac Adapter – connects with Micro:Bit
  • Slider
  • Rotary Button
  • RGB Ring
  • 2 Keycap buttons
  • Magnetic Sensor
  • Light Sensor
  • Hub – for connecting even more devices
  • 5 cables of different lengths

Each part is labeled and has a QR code that will take you to documentation for that device. I took full advantage of that. One thing I learned the hard way but would have learned if I read the documentation is that the adapter has a switch that determines if the Micro:Bit powers the Jacdac devices or if the Jacdac (and some external power supply TBD) powers the Micro:Bit. Things worked much better with the switch in the right direction.

Once I got everything out and read some documentation I had to try something out. I started with the RGB Ring and the Rotary Button.  I started with individual example programs and then created my own. I had the rotor determine which LEDs were lit. Going backwards (negative numbers) had some issues of course. I might leave solving that to students if I were doing this in class.

I recommend starting at MakeCode Integration before you get to far on your own. It will step you though adding the Jacdac extensions to MakeCode, connecting to your Micro:Bit, and  other helpful information.

BTW, from MakeCode you can program using blocks (very easy) as well as either JavaScript or Python. You can move back and forth between languages as well. A lot of potential for learners there.

Next up I will be trying to think of some larger projects as well as experimenting with other sensors and gadgets.  I may even cut some boxes with my laser engraver for some projects. Making boxes with 3D printers is also an obvious thing to do.

Tuesday, July 19, 2022

Freedom To Teach Computer Science Our Way

Mike Zamansky had another interesting post (CS - it isn't all that) that got me thinking. The last three paragraphs started me going. For example

As CS becomes more part of the system I expect teachers to have less freedom in what they teach and how they teach. As a community we might be able to steer the ship towards keeping the good stuff but then again, we might not.

In talking to a lot of teachers at CSTA 2022, I realized that most CS teachers have a lot of freedom in what they teach as CS and how they teach it. Other than the Advanced Placement courses there are not many real limits on what and how we teach CS. One teacher said “as long as the students are happy I’m left alone.” That is both exciting and scary.

It’s exciting if a teacher with good content knowledge and skills in CS pedagogy says it, Scary if that is not the case. And the later is probably more common than the former. Of course there is a positive move in standards development and teacher certifiably rules that is trying to fix the problem of “anyone can teach CS.”

That has its risks as well. While most standards programs I am aware of are deeply involving experienced CS educators in their development, once standards start getting implemented by bureaucrats all bets are off. Standards can be inspiration or shackles. They can include people who are good at passing tests and exclude qualified people who don’t fit in the usual boxes.

Many, dare I say most, education administrators don’t really understand computers let a lone what it means to teach computer science. That is the source of some of our freedom but can also be a source of constriction if effective advocates for specific curriculum and teaching resources convince them to push things top down on classroom educators. I see it all too often “My administration wants me to use [some well sold curriculum]. Is it any good?”  Seems to me that excluding subject matter experts in the school should be making those decisions not people inexperienced with teaching the subject.

How we teach today is going to be influential If we teach everyone well we are more likely to keep some freedom in how we do things in the future. People tend to teach the same way they were taught. Given how much we still have to learn about how to teach CS we need to avoid that trap AND to promote a growth mindset that is open to new ways of teaching and learning.

It will be hard to keep computer science from being constrained in someone’s idea of neat little boxes. That is what bureaucrats like to see. As CS continues to grow we have to be flexible and we have to promote the need to be flexable to all the publics we deal with.

Monday, July 18, 2022

A Summary Look Back at #CSTA2022

CSTA 2022 was energizing! After three years of not seeing people in person it was awesome to reconnect with people. And to meet new people. The energy level was high through the whole event. Masks and proof of vaccination were required which I thought was great. It seemed to work out well at SIGCSE. Quite frankly, after lots of stories' of people getting COVID at ISTE which did not have those requirements I really apricated the carefulness of CSTA.

Masks did make it harder to recognize people. I’m glad I wore my trademark hat which one person told me was more famous than I am.

Sessions were very good as one expects. The exhibit hall had about 75 exhibitors and everyone was staffed by engaged, knowable, and upbeat people. The hallway track was really fun. I learned a lot from friends old and new in discussions. As I understand it there were about 1,700 people in attendance for everyone to talk to.

The venue, McCormick Place was huge. It needed to be to all all of the concurrent sessions. We only took up a small part of the place though. If you explored to far you could easily get lost. And I did. There was food available for purchase in the back of the exhibit hall. It wasn't bad. It was nice not to have to go far and wide to search for food. There were many good places to eat nearby however. I liked that I could get from the conference hotel to the conference without going outside. Especially the day it rained all day.

A good number of people approached me to say that they read and value this blog and/or my Twitter feed. I can't tell you how much that means to me. Thank you to all of you. You made CSTA extra special.

It looks like next year’s CSTA will be virtual. Sigh. I know that it will make it possible for a lot of people who can’t travel to an in-person conference to get valuable knowledge from sessions. A virtual exhibit hall doesn’t excite me though. And I will miss the hallway conversations. On the other hand, maybe we can have even more sessions and have them available to more people.

My previous posts on CSTA 2022

Sunday, July 17, 2022

My Day Four at #CSTA2022

It’s a short day today but with plenty to learn. Last night was a great party at the Museum of Science and Technology. I left early (age?) but I know that a lot of people stayed late and partied hardy. There may be some tired faces in sessions this morning. It was a great community building event so well worth it.

First session for me was “You CAN Teach Cyber Security with CYBER.ORG’s Cyber Learning Standards. CYBER.ORG is probably the premier Cybersecurity learning/teaching resources. CYBER.ORG is funded by the US Department of Homeland Security. We heard about a lot of their programs. It seems like they have something for almost everyone. I would start there for Cybersecurity resources for teaching.CYBER.ORG funded a large group of educators to write a set of Computer Science Learning Standards.

I had several good options for the last time slot but Nifty Assignments is a must see for me. The version at SIGCSE is always standing room only but apparently it is not as well known at CSTA yet. Baker Franke does a great job of putting this session together. For reference, CSTA Nifty Assignments are archived at CSTA Nifty Assignments SIGCSE Nifty Assignments are archived at Nifty Assignments. I was paying to much attention to take much in the way of notes but the archive should be updated soon. One of them can be played at Mind Reader - App Lab - The archive is updated and I can’t wait to try some of these when I get home.

That’s a wrap for me. I skipped the closing keynote to get to the airport early. I feel a little guilty but I’m also tired and my brain is kind of full. Some more general thoughts tomorrow.

Saturday, July 16, 2022

My Day Three at #CSTA2022

I got an early (for me ) start this morning. I attended a briefing session for session proctors (after missing yesterday’s) so that was good. A hot up of tea and some review of the schedule and I was good to go.

First session for me, Developing Cyber Sleuths (link to slides here) Cyber security is a rapidly growing area of need and of course creation. The latter not as fast as the former. One of the key early topics was related to the people side of security – policies and training for people. Hacking people is a key security flaw. New to me term, Purple Team. Combining Red Teams who try to break security and Blue Teams who try to stop hackers. Several interesting resources were shared. You can find them in the slides or course but I like Cybersecurity and Infrastructure Security Agency as a place to start. This sessions wasn’t quite what I was expecting but I feel like the links I got were worth my time.

After a couple of great hallway track conversations it was time for Creating All Year with APCS Principles. There were a couple of interesting sessions in this time slot so distance was a tie breaker. Of course, the create task is a special part of the APCS P exam (30% of the grade). This session was packed!

Jill Westerlund has her students create a video of their program running at the beginning of the school year.Videos must be in AP submission format and include what the create task requires. What a great idea for getting a jump on what they will need to the exam later! Snipping tools are introduced and required early as well. Require at least one mock task before they have to do the real thing. And grade it based on what they need for the exam. View it as formative assessment. Its about feedback to make sure they know how to do the real task. Be sure the mock task is not something they could turn in as a real CPT. Jill suggests requiring the official create task before your spring break. 

Bonus link: Jen Manly on Three Keys to a 40 Hour CS Teacher Work Week Jen is amazing. I love her short videos. I’ll bet this was a great session.

I spent lunch break and most of the first session period in the exhibit hall talking to people and catching up with some friends. Following people in social media is nothing like catching up in person. Another post on the exhibit hall is in the works. I took pictures.

My afternoon session was “Fun, Formative Feedback, and Assessments to Improve Learning” Slides are here. One of the first topics was Parsons Problems – one of my favorite tools. Apparently,  there is a Free, open-source graphical Parsons problem creator tool: Next they talked about rubrics as tools to help and advise students. Next up was peer programming Here is a link to a CSTA Presentation - Pair Programming. Next up was some Autograding tools (links in their presentation)I encourage you to look at their slides for more information and resource links.

Friday, July 15, 2022

My Day Two at #CSTA2022

Day two started off great as I connected with several people from my home CSTA Chapter –CSTA New Hampshire. The CS community in New Hampshire is growing and the CSTA Chapter has been a part of that. I’m planning on getting more involved in chapter stuff  in the future.

My first session of the day was about teaching ethics when teaching artificial intelligence. Jeremy Keeshin (a last minute replacement as I understand it) from CodeHS was the presenter.  Seems like some good small group discussions took place. Maybe I was tired but I didn’t get into it very well. My fault. Wasted opportunity. I did get a copy of Jeremy’s book “Read Write Code” which I look forward to reading.

Next up for me was a session on preparing the future developers of the metaverse.  The presenters were from Carnegie Mellon. First I have heard of XR as a generic term to include Augmented Reality, Virtual Reality, and Modified Reality. We had some really interesting discussion of using virtual worlds in school. One school had a virtual birthday party in Minecraft. Minecraft has moved from pure play to an educational platform.

Students are picking different virtual worlds to play in as they age.It occurs to me that younger kids are building things in games like Minecraft and Roblox but older students, especially boys, and moving to games like Call of Duty which are more destructive. Something to think about.

My number one to look more into is Arena XR – An Augmented Reality Edge Network Architecture.

I really enjoyed this session and had some good interactions and learning with my tablemates. Slides for this session are at CSTA2022 NoStudentLeftBehind.pdf - Google Drive

Lunch break and more time in the exhibit hall. I got a close look at the Jacdac devices for use with a Micro:Bit. I may splurge and buy a starter kit. Note that I posted a brief look at Microsoft and other big companies exhibits at Amazon, Google, Meta, and Microsoft at #CSTA2022

First afternoon session was about writing for Hello World magazine. I was proctor and arrived before it started but after most people entered the room. Watching the clock is important as it is so easy to get distracted with so much going on. Anyway, the slides for this talk are available at CSTA_Writing Workshop Presentation.pptx - Google Slides  A lot of good stuff here. I hope this gets more teachers to write for the magazine.

Next up was a session on cryptography with an exercise in creating a Pringles can Enigma machine. We started the session with an brief introduction to and with an introduction to the Pigpen Cipher. (Note that this is one of the ciphers covered in my (PDF) free Tiny Book of Simple Cryptography)  We had some fun creating our mini Enigma machines and working though how they work. We only used one rotor but I brought home some sheets to make a larger one with a larger can when I get home.

Overall, a pretty good day. Some very good sessions, some good conversations at the exhibit hall, and many amazing face to face conversations with friends. I am exceedingly glad to be here this year.

Amazon, Google, Meta, and Microsoft at #CSTA2022

I blog about what interests me or stirs my curiosity. One thing that fits that is what are the really big tech companies doing to support CS education. So I am going to write briefly about the presence of Amazon, Google, Meta, and Microsoft (alphabetical order). Anyone else notice that we never see Apple at CSTA?

All of these companies have sessions at their booths and as regular conference sessions to talk about what they offer. If you are at CSTA you should at least stop by and see what they have to offer. It’s a lot.

Amazon and the Amazon Future Engineer Program

Amazon had one of the large end cap booths with a lot of people and materials. Their main emphasis was the Amazon Future Engineers program. This program offers curriculum for all levels of K-12 as well as resources and opportunities for teachers.

Amazon Future Engineer is a comprehensive childhood-to-career program aimed at increasing access to computer science education for children and young adults from underserved and underrepresented communities.

Google and programs' for CS Teachers Another big booth on an end cap. Lots of color and fun graphics. And swings! Also free messages.

The big thing here is Google’s CS First program. This is a great collection of curriculum and supporting resources that can be used during the school day or as an afterschool program

Meta and Meta Engineer for a week. You’re probably not surprised that the link for more information on this is at Facebook. Engineer for the Week | Facebook but also at Engineer for the Week ( The curriculum has a strong “coding for good” component.

Started in 2018, Meta's Engineer for the Week is a free program that introduces engineering to learners (ages 11-18) historically underrepresented in STEM. Over the course of 15 - 20 hours, learners work alongside adult facilitators to build tech prototypes that address a social issue of their choice.

Microsoft and MakeCode, MakeCode Arcade, and Minecraft

Also a nice sized booth on an end cap. Not as fancy as Google’s it gives the impression it was designed by software people not marketing experts. The emphasis was on writing code, especially with micro:bits, using MakeCode, games with MakeCode Arcade, and teaching CS using Minecraft. Lots of things including Micro:bit powered arcade games to touch and explore.

Thursday, July 14, 2022

Day One #CSTA2022

Well it was day one for me. I know that some people got in yesterday or earlier either because they were taking a workshop today or were part of the Chapter Leadership program. For me, today was about getting settled, meeting with old friend (and making some new ones), and the exhibit hall. Wow! has the exhibit hall grown. The conference as well. Apparently there are about 1700 attendees registered. I remember thinking 300 was big some years ago. Looks like about half the attendees are first timers as well. That is amazing and wonderful

My trip was good. I checked in for my flight with an app. I paid for the El (Chicago’s mass transit trains) with an app, and checked into my hotel with an app. Travel seems to be all about the apps these days.

The exhibit hall was open soon after I arrived at my hotel so I went right in after registration. Proof of vaccination is required to attend and wearing masks is required as well. I’m good with that. I hear a lot of people got COVID at ISTE and these measures make me feel safer. It seemed to work at SIGCSE!

I met many old friends while in the exhibit hall and walking around the conference. Catching up was great. We also talked about CS issues of course. So great to have people who share ideas. I couple of people I have not met in person before but who I know from social media visited with me as well. It is so good to put faces with names and be able to get to know each other. If you are at CSTA and are a blog reader or Twitter follower I would love to chat with you.

I walked through the exhibit hall several times to get a feel for what themes there are. I’ll be blogging for about that as the conference goes on but I’ll share a few first thoughts here now. Physical computing is big in the exhibit hall. Lots of robots but also many other programable gadgets. Cyber security was represented by several exhibitors as well. We really need to teach more of that in the US so I was glad to see thing. Several artificial intelligence programs were being highlighted in the exhibit hall. I want to dig into that more this conference.

Lots of curriculum providers are exhibiting which is not surprise. They’ve all be exhibiting at CSTA for several years. The companies with hardware all have curriculum as well. It’s not like the old days when people dumped some hardware and said “here. Figure out something interesting to do with this.” Progress I think.

Google, Microsoft, Meta, and Amazon have booths as well. There is a set of swings in the Google booth (Pictures tomorrow) I’ll write about their programs as well when its not 11PM my body time after getting up at 6AM and travelling all day.

Today was everything I wanted my first day at in-person CSTA. Still more friends to meet and make and lots more to learn.