Archive for the ‘STEM’ Category
We’re excited to announce a huge update to our brand new Expedition Atlantis Virtual World. The update includes nearly 100 fixes and improvements to the deep sea game. For a full overview of the game, check out the original announcement here. And the best news is, Expedition Atlantis is completely free through the end of the year!
If you downloaded and tried out Expedition Atlantis, please take 2-3 minutes and give us your feedback in this survey.
The Robot Virtual World team has just released a beta version of it’s latest game, Expedition Atlantis! It’s the year 2023 and Atlantis has been discovered deep in the ocean, off of the coast of Africa. A team of elite scientists and engineers have been sent to investigate the underwater ruins, and you’re one of them! Use your skills to to maneuver the teams underwater vehicles in this expedition to Atlantis!
Proportional problems are embedded everywhere. Expedition Atlantis provides students with the big ideas needed to become proficient proportional thinkers. Check out this video to see how:
The game begins with your submarine being deployed from a large mothership, beginning your expedition to Atlantis. A large underwater storm throws the submarine off course and into a cliff side!
Fortunately, the submarine was equipped with an escape pod! The underwater storm is still acting up, so you’ll need to move the robot to areas with cover between outbursts. The mothership will transmit how far away the next safe zone is; you’ll need to calculate how many wheel rotations it will take to get there. Be careful not to move too far or too little or you’ll be blown around the ocean floor!
A special training mode is available to help you learn how proportional relationships work, like how turning a number of wheel rotations translates into moving forward a certain distance.
Expedition Atlantis can be played with four different difficulty levels: Cadet (Easy), Explorer (Medium), Admiral (hard), and Custom. With custom mode, you can set how many problems you need to solve in each level of the game, and how hard the problems are. You’ll also notice that there are 4 main levels to the game.
After completing Level 1, the Minoan Megaliths, you’ll reach Level 2, the Pillars of Hercules. Underwater platforms appear to allow your escape pod to cross the chasm. You’ll need to calculate how much the robot needs to turn to line itself up with the next platform, before the robots thrusters engage. Be careful or your robot will thrust itself right to the bottom of the chasm!
Once you cross the chasm, you’ll reach the Atlantis Base and be equipped with a robot capable of catching cargo from the mothership. The storm is still acting up and throwing the cargo off course, so you’ll need to calculate how much the robot needs to turn and move forward to catch the cargo in Poseidons Courtyard.
The cargo you catch contains upgrades for your robot, which will be crucial for the final part of your mission. Take the cargo back to base to equip the upgrades!
In the underwater base, you’ll be able to equip all of the upgrades that you caught in Poseidons Courtyard. Upgrades range from different wheels, different robot bodies (chassis), powerful attachments, and even paint colors.
With your upgraded robot, you’ll be ready to explore the Heart of Atlantis. You’ll be completely in charge of marking where your robot needs to go, performing the calculations to get it there. Be careful! Ancient Atlantis was highly advanced technologically – it has a reactor core and portal network which is still operational today, but sensor readings indicate that they are unstable. Your robots radiation shield will protect it from the radiation, but will also slowly drain its batteries.
As you make progress in Atlantis, you’ll be rewarded with achievements. These achievements will also show up on your “My Achievements” page on CS2N, if you logged into the game with your CS2N username!
Why Use Expedition Atlantis?
- Proportional problems are embedded everywhere
- Widely applicable
- Students with math IEPs especially need proportional reasoning skills
- Expedition Atlantis provides students with the big ideas needed to become proficient proportional thinkers
- High student engagement through underwater robotics game
- Mechanistic approach
- Proportional thinking, not just proportional methods
- Repeated, contextualized practice
- Unified approach
- Aligns with the Common Core Standards
- Immediate teacher and student feedback
- Differentiation for high- and low-performing students (manual and automatic)
Expedition Atlantis is designed to be a fun, educational tool to teach and reinforce proportional relationships. When complete, it will be accompanied with a full Teacher’s Guide that provides information on its use in the classroom, ties into mathematical standards, and other valuable information. It’s also available completely for free during our Beta and Feedback period, so download it today!
We appreciate any feedback you have about Expedition Atlantis. Feel free to share it at the ROBOTC.net Forums.
The ROBOTC Curriculum contains quizzes to help assess what students have learned, or for that matter, what they haven’t learned. However, as we discussed in a previous blog post, one of the great things about teaching ROBOTC is the ability to differentiate instruction to your students. This can present some issues when it comes to assessment. If a student is progressing quickly through the curriculum, he/she cannot have more assessments than another student. Students all have to be assessed equally. This then begs the question of how you can have the students move through the curriculum at different rates while still assessing them equally.
One of the ways I’ve been able to address this is through the use of rubrics, like the one below:
The programmer uses Pseudocode within the comments to display a logical plan to solve the Mission.
Unsatisfactory - No Pseudocode included.
Satisfactory - Pseudocode is included but it does not display a logical plan to solve the mission.
Good - Pseudocode is included and it displays some logical thinking and something of a plan to solve the mission.
Exemplary – Pseudocode displays a logical plan to solve the mission. The plan is well thought out and clear.
The programmer is able to solve the Mission efficiently and repeatedly.
Unsatisfactory - Less than 70% of the mission is completed.
Satisfactory - Between 70 and 80% of the mission is completed.
Good - Between 80-90% of the mission is completed.
Exemplary - All of the mission is completed, and is able to be completed repeatedly.
Unsatisfactory - Code is hard to read and understand.
Satisfactory - Code is readable but is difficult to understand completely.
Good - Code is readable and understandable, but unclear is certain places.
Exemplary - The code is tabbed well and takes good advantage of white space in order to make it very easy to read.
Unsatisfactory - No Comments included.
Satisfactory - Basic Comments are included but some important parts of the code are not explained.
Good - All of the code is commented but explanations could be more complete.
Exemplary - All of the code is commented and the comments are thorough and comprehensive.
The nice thing about this rubric is that the student does not have to complete the programming challenge in order to be assessed. Just like in any other class, students might not learn a concept to mastery on its initial presentation. You never want a student to reach their frustration level, so this gives the teacher an opportunity to clear up misconceptions while still assessing the student.
Another thing that a teacher can do is utilize Exit Slips. Once again, if students are working at different instructional paces, then the Exit Slips can general. You can ask questions like, “What part(s) of the programming challenge were you able to finish today?” This type of metacognition is valuable for students as they complete projects that last several days. Or, the exit slip can be a review of previously learned concepts. Either way, Exit Slips can play an important role in both teaching and assessing.
Fortunately for teachers, robotc.net contains a wealth of information for extension activities. The ROBOTC blog contains a section entitled “Cool ROBOTC Projects.” Here, there is a wealth of ideas that teachers can look at in order to create an interesting activity.
Moreover, the ROBOTC forum contains a section dedicated to projects. This can also be researched in order to find ideas or interesting projects for your class. Also, the forum can be used to ask questions as you begin to plan and implement a project. Here, you really get the best of both worlds: A wealth of ideas and choose from and a dedicated community willing to help you with those ideas.
Have a great school year!
So your class has gone through the ROBOTC Video Trainer Curriculum (VEX or LEGO), are comfortable programming in ROBOTC, and the robots are starting to zip across the room: however, some students are absorbing the programming knowledge quickly, while others are taking a little longer to grasp the core concepts. Where should a teacher look to if a student (or classroom) advances beyond the pace of the class? In this post, we will take a look at some of the many advanced programming resources available for ROBOTC.
Because ROBOTC is a C-based programming language, there are many C programming features that students can lean about and implement in their code. The first resource to investigate is the ‘Programming Tips and Tricks’ section of the ROBOTC wiki. This special subsection contains samples of some of the more advanced C-based operations that can be executed using ROBOTC and are pulled from a variety of sources. Topics include structs, switch statements, tertiary operators, and more. Because all of the information is available for free online, students can research and test the topics at their own pace and gain a deeper understanding of the subjects.
Next, you may want to take a look at tutorials on the ROBOTC wiki for implementing advanced programming concepts with different sensors. Also be sure to check out ROBOTC’s Sample Programs (via the ‘File -> Open Sample Programs’) as many of the programming concepts have pieces of advanced code that can help the students understand exactly how they are applied in real-world scenarios. There are also several multi-robot projects (for the NXT) that can be found on ROBOTC’s Multi-Robot wiki and a thread dedicated to advanced ROBOTC programming with VEX which will both offer unique challenges for students to conquer, as well as a wealth of community created projects showcased on the ‘Projects Discussion‘ section of the ROBOTC forums.
Once the students have sufficiently expanded their knowledge of advanced ROBOTC programming, they will be ready to tackle more complex robotics projects. This is a perfect opportunity to encourage creativity and inventiveness with preexisting challenges (and is a perfect example of where differentiated instructions can positively impact a classroom). By utilizing differentiated instruction in the classroom, you will be able to not only challenge the newer programmers with the basic programming examples, but will also be able to engage the more advanced students with complex programming options, such as making their robots perform a challenge quicker, more efficiently, or more accurately (or a mix of all three).
- John Watson
Eventually your classroom may run into issues with either the ROBOTC software, the robots, or both. The most important question that arises when this happens is ‘Where do I go for help?’ Fortunately, ROBOTC has you covered with an expansive support system designed to help all ROBOTC users get back on their programming feet as quickly and easily as possible. This blog post will take a look at some of the more common issues that you may run into and how to quickly resolve them.
“I am having trouble installing ROBOTC, and do not know why it will not install properly.”
ROBOTC installs like most other programs, but even so you may run into installation issues (depending on your classroom computers’ specific setup). If you run into installation troubles, take a look through our ‘Getting Started’ guide on the ROBOTC wiki as it covers many of the common installation issues that classrooms in particular run into.
“I have installed ROBOTC but am running into issues activating my license.”
First, make sure your license has activations remaining by logging into the ROBOTC customer service page using your license ID and password. Next, check to see if your school’s IT department has recently reimaged the computers; if they have, the license information may have been deployed incorrectly and they will have to contact ROBOTC technical support (below).
“ROBOTC is installed and activated, but my computer will not connect to my robot/won’t load Virtual Worlds!”
There are a variety of reasons this could be occurring (depending on the computer’s set up and the specific robot platform being used), but normally these issue is solved by following the appropriate setup guide on the ROBOTC wiki (LEGO MINDSTORMS NXT, VEX IQ, and VEX Cortex). For the Robot Virtual Worlds software, double check to make sure the computer’s hardware meets or exceeds the minimum requirements as well.
“I have a different question or would like more information on these particular issues.”
There are several resources that can be used when troubleshooting a ROBOTC installation or physical robot issue.
- Coding Problems and Questions – All coding questions should be forwarded to the ROBOTC forums, where the entire support staff may see and answer them.
- Specific Commands, Functions, etc – The ROBOTC wiki is full of useful information including setup guides, programming tips, breakdowns of commands and functions, and more.
- Technical Issues and Bug Reports – For any and all bugs and glitches you may run into, the ROBOTC support line (email@example.com) will be the best mode to contact the ROBOTC support team directly.
The challenge for teachers in today’s educational environment is to teach student at their instructional level. Instead of creating an artificial level to instruct the entire class, teachers have to assess each student’s current level and create a plan to ensure that the student has academic growth from that beginning baseline. It’s best to think about this with an example. A sixth grade student has a reading comprehension at a 9th grade level at the beginning of the school year. The student takes assessments during the spring of that school year. When those assessments are scored, it shows that the student is reading at a 9th grade comprehension level. In the past, teachers and parents would be happy with that information, but the recent push towards differentiated instruction has forced educators to look at this information in a new light. What implications does this have for a robotics teacher?
Luckily, teaching robotics seamlessly fits into the demands of differentiated instruction. First, students are encouraged to come up with different solutions to problems. Whether it is a building challenge or a programming exercise, different students are going to come up with different solutions. Students are encouraged to do this in other disciplines also, but robotics is unique because it is so open-ended. There are only so many ways you can solve a math problem, but there is a myriad of different ways to program your robot to accomplish a task.
Secondly, students who are learning robotics are not forced to conform to an artificial ceiling. In another classroom, a teacher has to keep a student’s learning somewhat in line with the rest of the class. When teachers try to differentiate instruction, they create projects or assignments that are open-ended so students can explore those items as much as they can. However, when that assignment/project is completed, students are all brought back to the same point within the curriculum. Teaching robotics revolves around problem-based learning. Therefore, as the students learn how to solve a programming challenge with more sophisticated ROBOTC code, they are accelerating their knowledge both within that project and within the larger curriculum. While some students are mastering the fundamentals of programming their robot to move, other students can be incorporating more complex programming tools, like functions, into their programs. Robotics teachers can point students in the right direction so they can explore different and more intriguing programming concepts to apply to their challenges. It is not necessary that students memorize all of the different programming/building techniques, but that they know how to access the information when they need it. In this way, students are given the tools to create some ownership with their learning. That ownership, combined with the engagement of robotics helps to provide the true key to differentiation: high student interest.
Simply, if students are not interested in what they are doing, they will never develop the intrinsic motivation needed to push their learning. Students will work towards the minimum unless they are engaged and challenged. Teaching robotics provides the perfect platform to accomplish this goal and create a learning environment in which students are receiving individual acceleration and enrichment. Robotics is the perfect means to achieve the end of differentiated instruction.
- Jason McKenna
Now that the physical robot kits are in the classroom and ROBOTC is installed and activated, you should be ready to build the physical robots for your classroom. One of the best features of a VEX Robotics kit is that they allow students to create a nearly limitless range of robots; the downside of this, however, is maintaining student-created robots in a classroom. To help with this, ROBOTC and the Video Trainer Curriculum support several standard models to help keep a baseline in the classroom.
The first of such robots we will look at is the VEX Squarebot (using the VEX Cortex), one of the standard Cortex models that are used in the VEX Cortex Video Trainer for ROBOTC. The Squarebot utilizes three VEX motors (two for driving, one for the arm), and a wide variety of sensors. These sensors include Quadrature Shaft Encoders, a Sonar Sensor, and a Potentiometer (among others; in total, there are 8 separate sensors on the Squarebot). This model allows for a variety of tasks to be completed and is designed to work with all of the challenges in the ROBOTC Curriculum.
A smaller, different alternative Cortex standard robot is the Swervebot. Like the Squarebot, the Swervebot utilizes the VEX Cortex as its main processor and uses two VEX motors for driving. However, the Swervebot’s small chassis does not utilize an arm. Instead, the Swervebot makes clever use of an Omniwheel in the rear for turning and boasts three Line Follower sensors and a Gyroscope (as well as 6 other sensors, for a total of 10) and is perfect for smaller classroom environments.
Finally, the new VEX IQ platform can be quickly assembled and ready to use in a classroom thanks to the IQ Clawbot standard model. Using 4 motors total (two for driving, one for the arm movement, and one for gripper control), the VEX IQ Clawbot can be controlled either autonomously using the VEX IQ sensors (such as the Bumper Switch and Color Sensors), remotely using the IQ Controller, or a pleasant mix of both, depending on which kit is being used.
Visit CMU’s Robotics Academy VEX site for more information on the different kits available and to find build instructions.
Now that the physical robot kits are in the classroom and ROBOTC is installed and activated, you should be ready to build the physical robots for your classroom. One of the best features of a LEGO Mindstorms educational robotics kit is that they allow students to create a nearly limitless range of robots; the downside of this, however, is maintaining student-created robots in a classroom. To help with this, ROBOTC and their related Video Trainer Curriculum support several standard models to help keep a baseline in the classroom.
The first of such robots we will look at is the NXT REMbot (which stands for ‘Robotics Education Model), the standard NXT that is used in the ROBOTC Curriculum for TETRIX and LEGO MINDSTORMS. The REMbot utilizes three NXT motors (two for driving, one for the (optional) arm), a Light Sensor mounted below the robot, a Touch Sensor mounted in the front, a Sonar Sensor positioned above the robot, and a Sound Sensor on the side of the REMBot. This model allows for a variety of tasks to be completed and is designed to work with all of the challenges in the ROBOTC Curriculum.
If your classroom will be utilizing the TETRIX kit, the Mantis Robot standard model would be the build of choice. The Mantis Robot utilizes the TETRIX kit to add two TETRIX DC motors (for driving) and a TETRIX Servo (for the arm), as well as the respective motor and servo controllers; all of which are fully programmable in ROBOTC. Sensors can be added using any of the remaining sensor ports (one of which is used by the HiTechnic Motor/Servo controller chain).
Users of the MATRIX kits are not left in the dark however! MATRIX also has several options to use in the classroom, but the Quick Start Rover stands out from the pack. Combined with The Little Gripper, the MATRIX kits can be quickly and effectively set up for a standard robotics classroom. Like the TETRIX bots, the Quick Start Rover can be outfitted with NXT sensors on any of the remaining sensor ports for added versatility. It uses two MATRIX motors for movement and a MATRIX servo for The Little Gripper (all controlled through one MATRIX controller), all of which is fully programmable in ROBOTC.
Visit CMU’s Robotics Academy LEGO site for more information on the different kits available and to find build instructions.
A curriculum pacing guide is something that teachers have to consider whenever they examine their curriculum. This fact does not escape teachers of <a href=”http://www.robotc.net”>ROBOTC</a>. Whenever I come across teachers who are just starting to use the ROBOTC curriculum, often their first question revolves around how long the curriculum will take. Once again, teachers are used to having some type of pacing guide that delineates how a subject is to be taught. The ROBOTC curriculum is not organized in that fashion. Instead, the curriculum is organized by topic. The topics include basic programming fundamentals, robot movement, robot sensing, etc. The teacher is then free to spend an appropriate amount of time within each topic.
As teachers, this freedom is welcome. It is welcome because the pacing that comes with most textbooks is an impossible guide to follow. In order to create a true pacing guide, student background knowledge would have to be taken into account. Since every classroom is different (sometimes within the same grade, within the same school), it is impossible to gauge how quickly the students are going to master the concepts as they are presented. Additionally, as the teacher becomes more familiar with ROBOTC, they will find that they spend more time on particular concepts then they did the first time they taught the curriculum. For example, when I first taught ROBOTC, I spent 20 minutes discussing Flowcharts and Pseudocode. Experience has now taught me to spend a significant amount of time on these topics. I also spend much more time talking about Errors. Specifically, what should a student do when they get the dreaded compiler errors in their program? Experience has taught me to spend much more time on thinking about the logic of a program before the writing of ROBOTC and on debugging strategies once the code has been written.
Each of the aforementioned sections of the ROBOTC curriculum contains a programming challenge. The programming challenged is designed to showcase the skills that were emphasized in that section. Each section also contains an assortment of “mini challenges”. These challenges can be used at the teacher’s discretion. They all do not have to be completed. However, they can be very useful. For example, after the students have spent a day or two learning a topic, I will begin the following class with one of these mini challenges. They might not know all of the skills needed to complete the section challenge, but the mini challenge is a good assessment of what has been presented so far in that section. This also serves as a good change of pace for the class. Simply, you can’t learn to program without actually programming. In order to really understand the applications of while loops or if/else statements, students need to apply them. The mini challenges found within the ROBOTC curriculum serve as a great opportunity to scaffold skills toward their more challenging applications.
A beginning teacher of ROBOTC could teach the basic ROBOTC curriculum in one semester. By including many of the mini challenges, the curriculum can be stretched easily over a semester. I often tell teachers who are teaching the class for a year to do this, and then to end the year with a larger programming challenge. After the students have made it through the ROBOTC curriculum, I enjoy introducing them to Multi-Robot Communication. The sensor needed (NXTBee) is inexpensive, and there are a lot of great ideas for activities and programming challenges.
If you have a stronger background in computer science, and maybe you are teaching older students, you may be able to navigate through the curriculum much faster. What then do you do with students if you have them for an entire year? Luckily, there are many great ROBOTC projects on robotc.net. Moreover, the ROBOTC forum is also a wonderful place to look for ideas for projects, in-class competitions, and programming challenges.
Teaching robotics and ROBOTC is a lot of fun. The ability to watch your students apply what they learn in the ROBOTC curriculum in such engaging and open-ended activities is one of the main reasons why.
Once the physical hardware (robotics kits) are secured for a classroom, the next step is to install the software (ROBOTC and Robot Virtual Worlds). It would be nearly impossible to cover every single specific setup that could be encountered on a classroom’s computers, but this blog post will cover the basic installation steps and some of the more common installation issues that educators may run into when installing ROBOTC in a classroom.
The first thing you will need to do is install ROBOTC on the computers in your classroom. To do this, always make sure to grab the latest version of ROBOTC that your license supports from the correct ROBOTC download page. If the wrong version is downloaded and installed, or if there is already a different up-to-date version of ROBOTC installed on the computers, you will not need to uninstall and reinstall the program; instead, you will simply need to activate your license in ROBOTC (more on this later). During the download process, ROBOTC will also attempt to install the necessary drivers for communications with physical robots. Depending on the level of security on the computers, you may need to get your IT department involved in order to ensure that the drivers are installed properly.
Once ROBOTC and the appropriate drivers have been installed, you will need to activate ROBOTC on each computer manually. The license activation ‘unlocks’ the ability to download code to either a physical robot or a Virtual World, depending on which license is used. When ROBOTC is installed on a computer, all versions of ROBOTC (including different robotics platforms, such as the VEX and LEGO platforms, and different compiler options, such as Virtual Worlds compiler options) are installed at the same time. Instead of installing additional copies of the software on the same computer (or opening a new program every time you would like to change the compiler target), the additional platforms and compiler options are ‘unlocked’ by activating their respective keys.
Before we move on to the next blog (Setting up the Robots), here a couple more tips that may come in handy when setting up ROBOTC in a classroom:
- Depending on the programs, policies, and restrictions in place on the machines, your school’s IT department may need to be present for the installation or activation of ROBOTC, Virtual Worlds, or the installation of any drivers for the physical robots.
- If your school’s IT department images and deploys the classroom’s computers, make sure they reference the ROBOTC Deployment Guide on the ROBOTC wiki for important help and information.
- Make sure to check the computers’ hardware to the minimum requirements for ROBOTC or Robot Virtual Worlds before
- Always test one computer first! If there is a problem with the installation, it is better to find out about it early and fix it before they same issue appears on a classroom full of computers.
- John Watson