mathematics

Marion Walter

Marion Walter is a mathematics 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 Marion Walter rather than just read about it. In short: Marion Walter (30 July 1928 – 9 May 2021) was an internationally-known mathematics educator and professor of mathematics at the University of Oregon in Eugene, Oregon. There is a theorem named after her, called Marion Walter's Theorem or just Marion's Theorem as it is affectionately known.

Key takeaways

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

Reference excerpt

Marion Walter (30 July 1928 – 9 May 2021) was an internationally-known mathematics educator and professor of mathematics at the University of Oregon in Eugene, Oregon. There is a theorem named after her, called Marion Walter's Theorem or just Marion's Theorem as it is affectionately known.

Early life Marion Walter was born in Berlin, Germany in 1928 to Erna and Willy Walter. Her father was a prosperous merchant who specialized in costume jewelry. In 1936, when the Nazis were gaining strength in Germany and it was no longer possible for Jews to attend public school, she and her sister, Ellen, were sent to a Jewish boarding school called Landschulheim Herrlingen in the village of Herrlingen, a suburb of Ulm. The book Education towards spiritual resistance: The Jewish Landschulheim Herrlingen, 1933 to 1939 by Lucie Schachne documents this remarkable school, which was closed in 1939. On March 15, 1939, Marion and Ellen Walter were sent on a Kindertransport to England, where they attended a Church of England boarding school in Eastbourne, on the southeastern coast of England. Marion and Ellen Walter were reunited with their parents in England. After England entered World War II, in 1940 her father was sent to internment on the Isle of Man. He died there in 1943. Eastbourne was in the path of a possible German invasion of England and all students at the boarding school were evacuated. Walter was sent to a school in the hamlet of Wykey in Shropshire, which was in a large country house where they bred cocker spaniels. She slept on an air mattress in a white-washed kennel. She was moved two more times. The last place she resided in was Combermere Abbey in Cheshire, which was acquired by Sir Kenneth Crossley. After Walter completed her schooling at the age of sixteen in December 1944, the school's only mathematics teacher resigned. Since it was difficult to find a replacement during the war period, Walter was asked to teach math, in part because she had earned a mark of distinction on her Cambridge University School Certificate exam. She taught for two terms and found she enjoyed teaching.

… excerpt ends here. Continue reading the full article.

Illustrations

Worked examples

Example 1 — a first encounter with Marion Walter

Start with the simplest possible case. Write down what Marion Walter claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In mathematics, 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 Marion Walter 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 Marion Walter 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 Marion Walter

In research: Marion Walter appears in mathematics 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 Marion Walter 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: Marion Walter is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1928 births, 2021 deaths, 20th-century German mathematicians, so understanding it makes those chapters shorter.
In everyday life: Look for Marion Walter 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 Marion Walter in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Marion Walter 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 Marion Walter out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Marion Walter in simple terms?

Why does Marion Walter matter?

Because it connects several mathematics 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 Marion Walter?

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 Marion Walter.