Mobile STEM: What Makes a good STEM Lesson? Part 1

By Jeremy Knowlton

WMSI Mobile has been busy this month - we visited 8 different schools in the North Country!

Each route color represents a school we've visited once or multiple times in the past month. 

Each route color represents a school we've visited once or multiple times in the past month. 

While adding many miles to our new van, we've been getting students excited about some seriously cool new STEM skills, including sensor programming, game controller design, and Minecraft coding on one of the world's smallest and cheapest computers!

During these hectic weeks of engineering and fun, we've been asking ourselves "what are the fundamental components to a good STEM session?" Here's the first idea we came up with. 

Every set of hands needs something to do. One of the many reasons students loved game controller design was that there was something for each partner. For example, a set of Milan explorers had the unique idea of developing a classic joystick controller. One partner built the box for it while the other partner built the handle. They worked furiously to get it done on time. You could hear fast paced discussions of measurements and placement of aluminum foil as they cut, taped and thought their creation together. 

One student (left) working on the handle of the joystick, while his partner works on the box to contain it. 

One student (left) working on the handle of the joystick, while his partner works on the box to contain it. 

Another pair designed a controller for a three person game. Each player had an aluminum foil "thimble" around their index finger which, when placed on a conductive pad, made Donkey Kong do something in-game. One player controlled jumping while the other two controlled backwards and forwards. Let me tell you, the team work required for coordinating barrel jumps and avoiding bad guys is pretty amazing!

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All of these ideas easily incorporate two sets of hands in each partnership, whether the jobs be cutting cardboard, coding, taping, or the act of playing the game itself!

Not all of our activities followed this principle of "every set of hands needs something to do". Some of our activities needed a little polishing before they became rockstar STEM sessions. Our third session, musical robots, involved coding EV3s so that different colors placed under a sensor would trigger the EV3 to make different sounds. This activity had a lot of promise but was missing some crucial WMSIcal and STEM design touches. Namely, it was all coding, which meant that only one set of hands was busy in each pair. Many partners contributed ideas, and there was always a keyboard switch every few minutes, but the sharing of the keyboard led to some less than interested STEM Explorers at times.

Creating WMSI activities, like any creative task, follows the design process. We identified a problem -- all hands need something meaningful to do -- and tried several different ideas to fix it. The final concept was pretty awesome. "Musical Robots" became "Sound Bots" and the challenge changed from "design a musical instrument" to "design a motion sensor that does something cool and/or useful." Both involve coding computers to create an output given a certain sensory input, but sound bots is far more engaging.  Sound bots invite team members to design and build structures, mechanisms, and code.  This gives all hands something meaningful to do!

Students suddenly had so many things to do! The room buzzed with activities as pairs coded their sensors, recorded sounds that would be activated by motion, and designed cardboard cutouts that incorporated their sensor!

One pair programmed and designed a panda that told you its name and favorite pastimes if you got close enough to the sensor. 

This group designed a girl robot that greeted you if triggered. 

We even had some door triggered sensors that welcomed you to Groveton every time you walked through a doorway and a birthday cake that sang "happy birthday" every time your head came up close to blow out the candles!

Indeed, STEM learning tools are powerful partly because it is highly engaging, both physically and mentally. We've learned that activities which include a variety of tasks (coding, crafting, wiring, etc.) work best for our STEM Explorers. Using these learning experiences, we will continue to hone our STEM adventures throughout the year!

Next up, we'll use Minecraft to teach coding, engineering, and problem solving!

Learning driven by student curiosity with WMSI Mobile

WMSI is back from holiday break filled with excitement about programs for 2017! Specifically, I've been putting thought into how our sessions work. Should they follow a rigid plan? Should they be flexible, allowing students to drive learning forward through creativity? Both approaches have their merits, but if you have a truly engaging learning tool, letting student creativity power progress can lead to loads of fun!

During our musical robots sessions, students did just that! We started by explaining the engaging tool: a LEGO EV3 computer with a distance sensor and a color sensor attached. On our laptops, we had software in which we could code different sounds to different colors or distances. The framework was set. what could students do with it? 

Students brainstorming with one of our outstanding youth leaders!

Students brainstorming with one of our outstanding youth leaders!

Students started with a fairly easy challenge: program the distance sensor so that volume is related to distance measured. STEM Explorers took off with this prompt, creating police siren like calls as well as howling dogs that increased or decreased in volume. One pair danced in front of the sensor, causing the computer to produce different sounds depending on how far away they were!

Messing with the coding for the distance sensor

Messing with the coding for the distance sensor

The big design challenge of the day? Use the color sensor to produce something fun. Students drew information from their previous, more structured challenges to follow their curiosity with this open-ended prompt. Some students "attached" a word to each colored block, so that when they flashed red under the sensor the output said "Luuuke." they pushed the red away and inserted green - "I am". Lastly, they used blue - "your father". Movie quotes filled the room with giggles. 

A STEM Explorer adding a custom sound.

A STEM Explorer adding a custom sound.

A couple sets of students used the custom sound recorder on the LEGO software to record random words. They then coded the words to different colors, which allowed them to make random sentences. They called it "The Mad Lib Generator". This gave me an idea. I talked to the students some more about their generator and decided to act on the idea. With the help of Bill and our youth leaders, I created a madlib LEGO program that would draw from a random bank of nouns, verbs, or adjectives depending on which color was under the sensor. 

This code generates a random number. The number range it can generate depends on what color is under the sensor. A random number triggered by the red block will choose one of three nouns added by students. 

This code generates a random number. The number range it can generate depends on what color is under the sensor. A random number triggered by the red block will choose one of three nouns added by students. 

for our next music bots session some students got to beta test the program, adding their custom nouns, adjectives, and verbs into the word banks. They read a Mad lib that I printed and used the program to fill in the blanks. Not only did they love the program, but it also gave them the chance to explore random number generators and variables in the LEGO code! This novel idea would not have been possible without STEM Explorers driving the creativity of our Mobile Lab sessions.

Some students having a blast with mad libs!

Some students having a blast with mad libs!

Next, electricity!