1 - Start: What We're Building ~4 mins
Today you will build a pose model in Teachable Machine that can recognise when you tilt left, tilt right, or stay straight.
You will create three classes, add your own body-position examples, train and test the model, improve it when it gets things wrong, and export a link so you can use the model later.
Before you start capturing, think: what might make it hard for the model to tell a left tilt from a right tilt?
Keep the start short. Devices on Teachable Machine, no earlier file to open. Optional predict: ask what might confuse left tilt versus right tilt before anyone records. Do not spend long here; time belongs on sampling and training.
2 - Introduction ~3 mins
In this lesson, you will create a pose model using Google's Teachable Machine to recognise when you tilt left, tilt right or don't tilt.
Google's Teachable Machine is a tool that allows you to create machine learning models. You'll train the model to recognize different poses.
In another lesson in this course we will use the model to build a space game.
Frame the lesson goal in plain language: three pose classes, train, test, improve, export. Mention they already know image models so they can later contrast pose with image. No code on the board; stay on the big picture.
3 - Open Teachable Machine ~3 mins
First we need to open the Google's Teachable Machine website to create our model.
Click on the Get Started button.
Model opening Teachable Machine and Get Started on the board. Watch for slow loads or blocked sites. Circulate so every pair reaches the project-type screen together.
4 - Create a Pose Project ~3 mins
Click on the Pose Project button to create a new pose model project.
This will bring you to the screen where we can create our classes for our pose model.
In an AI model, a class is a category that the model can recognize. For example, in our space game, we will have three classes: tilt left, tilt right, and no tilt. The AI will learn to recognize images of each class and be able to tell them apart.
Confirm everyone chooses Pose Project, not Image or Audio. Ask why a class is a category the model must learn. Quick check that the class editor is on screen before renaming.
5 - Create the Classes ~2 mins
There will be two classes already added to your model called 'Class 1' and 'Class 2'.
Add a third class by clicking on the 'Add a class' button and then rename your classes to:
- Tilt Left
- Tilt Right
- No Tilt
Model adding the third class and renaming all three to Tilt Left, Tilt Right, No Tilt. Common bug: typos or swapped names. Differentiation: support pairs by dictating the exact labels; extension students can explain why three classes beat two for a neutral state.
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