Lesson Plan: The Astrolabe of Annwn
A Creative Synthesis of Medieval Myth & Science
Materials Needed
- Access to a digital or physical copy of at least one branch of the Mabinogion (e.g., "Pwyll, Prince of Dyfed"). The Guest translation is widely available online.
- Access to a digital or physical copy of Chaucer's "A Treatise on the Astrolabe." (Project Gutenberg has free versions).
- A notebook and pen/pencil, or a word processing program.
- Art supplies: A sheet of paper (or cardstock), colored pencils, markers, or ink pens.
- Optional: Access to online resources like YouTube for videos explaining how a real astrolabe works.
1. Learning Objectives
By the end of this lesson, you will be able to:
- Synthesize thematic elements from a mythological text (The Mabinogion) with technical concepts from a scientific text (Treatise on the Astrolabe).
- Create an original short story that applies the function of an astrolabe to a mythological plot, demonstrating creative problem-solving.
- Design a conceptual object (a mythical astrolabe) and visually represent its key features, connecting its form to its function within your story.
2. The Hook: The Big Question (10 Minutes)
Let's start with a thought experiment. In the world of the Mabinogion, magic and wonder are everywhere. The veil between the human world and the Otherworld (Annwn) is thin. In Chaucer's world, logic, mathematics, and observation can unlock the secrets of the heavens.
Consider this: What if they are the same thing?
What if a hero like Pwyll or Manawydan used a device—not of sorcery, but of incredible science—to navigate the treacherous paths between worlds? What if the "magic" of the bards and druids was actually a lost form of celestial engineering?
Today, your goal is not just to read about these two worlds, but to build a bridge between them.
3. Part One: Activating Knowledge (15-20 Minutes)
You don't need to re-read the texts from scratch. Just spend a few minutes re-familiarizing yourself with the core ideas. In your notebook, jot down some quick answers to the following:
The Mabinogion (Choose one tale you know well):
- Who is the main character? What is their central challenge or journey?
- What are the key elements of "magic" or the supernatural in the story? (e.g., shape-shifting, magical boars, a bottomless cauldron, passage to the Otherworld).
- What is the overall *feel* or tone of the world? (e.g., mysterious, bound by honor, dangerous, beautiful).
Chaucer's Treatise on the Astrolabe:
- In the simplest terms, what are the two or three main things an astrolabe can do? (e.g., tell time, find the height of a star, determine latitude).
- Look at a diagram of an astrolabe. What are the names of its main parts? (e.g., the Rete, the Plate, the Alidade).
- What is the *purpose* of this tool? What kind of problem does it solve for its user? (It provides precise, reliable information about your relationship with the cosmos).
4. Part Two: The Creative Challenge (60-90 Minutes)
Your task is to write a short story (approx. 500-1000 words) set in the world of the Mabinogion. However, your story must feature a new key object: The Astrolabe of Annwn.
This isn't a normal astrolabe. It was forged by a legendary smith or enchanted by a master bard. Your story will show what it does and why it's crucial for the hero to succeed.
Story Requirements:
- A Hero: Create a new character, or use a lesser-known character from Welsh mythology. Give them a clear goal (e.g., to find a lost love, to reclaim a stolen treasure, to map the path to the Otherworld).
- The Astrolabe of Annwn: This device must be central to the plot. It doesn't just measure stars; it measures something supernatural. You decide what!
- A Problem and a Solution: Your hero must face a challenge that can *only* be overcome by using the astrolabe correctly.
Brainstorming Your Astrolabe:
Think about how the parts of a real astrolabe could be re-imagined:
- Does the Rete (the star chart) track the constellations of our world, or the shifting "stars" of the Otherworld?
- Do the Plates correspond to different latitudes on Earth, or to different magical realms (like Annwn, Dyfed, etc.)?
- Does the Alidade (the sight-rule) measure the height of the sun, or perhaps the "level of enchantment" on a person or place?
The more you connect your device's function to the actual mechanics of an astrolabe, the more clever and compelling your story will be.
5. Part Three: The Deliverable (30-45 Minutes)
Once your story is complete, you will create two final pieces:
- The Final Story: A clean, proofread version of your 500-1000 word story.
- A Manuscript Illumination: On your sheet of paper, create a diagram or an artistic illustration of your Astrolabe of Annwn. This should look like a page from an ancient manuscript. Label its unique, magical parts and give a brief, one-sentence description of what each part does. Be creative with the design!
6. Assessment for Success
Use this simple rubric to evaluate your work. The goal is excellence in all three areas.
| Category | Developing (Needs more work) | Proficient (Good work) | Excellent (Exceptional work) |
|---|---|---|---|
| Creative Synthesis | The story includes an astrolabe, but it feels like a generic magic item. The connection to Chaucer's text is weak. | The story successfully blends the tone of the Mabinogion with the function of the astrolabe. The device plays a clear role in the plot. | The story brilliantly re-imagines the astrolabe's mechanics for a mythological purpose. The blend of science and magic feels seamless and original. |
| Application & Problem-Solving | The hero's problem is solved in a way that doesn't necessarily require the astrolabe. | The hero uses the astrolabe to solve a key problem, demonstrating a clear understanding of its function in the story. | The astrolabe is the *only* way to solve the central conflict. The hero uses it in a clever, non-obvious way that drives the plot forward. |
| Clarity & Design | The story is difficult to follow, or the astrolabe's diagram is unclear and its parts are not explained. | The story is well-written and easy to understand. The astrolabe diagram is clear and its parts are labeled. | The story is engaging and polished. The diagram is both artistic and informative, creatively explaining the device's unique features. |
7. Extension Activities (Optional)
If you finish early or want to dive deeper, choose one of the following:
- The Engineer's Treatise: Write a one-page "user's manual" for your Astrolabe of Annwn. Write it in the instructional, slightly formal style of Chaucer himself. Explain how to perform one of its magical functions step-by-step.
- The Cartographer's Map: Draw a map of the world or region where your story takes place. Mark the key locations and chart the hero's journey. Add annotations showing where and why the astrolabe was used.
- Build a Prototype: Using cardboard, paper, and a brass fastener, create a simple physical model of your astrolabe. It doesn't have to work, but it should represent your design and have moving parts (like a spinning Rete).