astronomy

Gerry Stahl

Gerry Stahl is a astronomy topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Gerry Stahl rather than just read about it. In short: Gerry Stahl is an American computer scientist specializing in computer-supported collaborative learning. He is professor emeritus of computing and informatics at Drexel University, and was the founding editor-in-chief of the International Journal of Computer-Supported Collaborative Learning.

Key takeaways

Gerry Stahl belongs to astronomy; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Gerry Stahl to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Gerry Stahl from memory before moving on to harder problems.

Reference excerpt

Gerry Stahl is an American computer scientist specializing in computer-supported collaborative learning. He is professor emeritus of computing and informatics at Drexel University, and was the founding editor-in-chief of the International Journal of Computer-Supported Collaborative Learning.

Education and career Stahl studied philosophy and mathematics at the Massachusetts Institute of Technology, graduating in 1967. While supporting himself with work as a systems programmer, he completed a Ph.D. in philosophy at Northwestern University in 1975, with a dissertation on the philosophy of Heidegger and Marx. After returning to graduate study at the University of Colorado Boulder, he completed a second Ph.D. in computer science there in 1993. After working for several years as a researcher at the university and various software firms, he became an associate professor at Drexel University in 2002. He was given tenure there in 2008, and promoted to full professor in 2012. He retired as professor emeritus in 2014. He is the founding editor-in-chief of the International Journal of Computer-Supported Collaborative Learning, an official journal of the International Society of the Learning Sciences, which published its first issue in 2006. He stepped down as editor-in-chief in 2016.

Books Stahl is the author of books including:

Group Cognition: Computer Support for Building Collaborative Knowledge (MIT Press, 2006) Studying Virtual Math Teams (Springer, 2009) Translating Euclid: Designing a Human-Centered Mathematics (Morgan & Claypool, 2013) Constructing Dynamic Triangles Together: The Development of Mathematical Group Cognition (Cambridge University Press, 2016) Theoretical Investigations: Philosophical Foundations of Group Cognition (Springer, 2021)

References

External links Home page Gerry Stahl publications indexed by Google Scholar

Illustrations

Worked examples

Example 1 — a first encounter with Gerry Stahl

Start with the simplest possible case. Write down what Gerry Stahl claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In astronomy, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Gerry Stahl before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Gerry Stahl ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Gerry Stahl

In research: Gerry Stahl appears in astronomy research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Gerry Stahl in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Gerry Stahl is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1945 births, American cognitive scientists, American computer scientists, so understanding it makes those chapters shorter.
In everyday life: Look for Gerry Stahl outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study Gerry Stahl in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Gerry Stahl means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Gerry Stahl out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Gerry Stahl in simple terms?

Why does Gerry Stahl matter?

Because it connects several astronomy ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Gerry Stahl?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Gerry Stahl.