science

Justine Roberts

Justine Roberts is a science 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 Justine Roberts rather than just read about it. In short: Justine Juliette Alice Roberts (born October 1967) is the founder and chief executive of British websites Mumsnet and Gransnet. Early life Roberts was educated at Guildford High School and at New College, Oxford, where she read PPE.

Key takeaways

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

Reference excerpt

Justine Juliette Alice Roberts (born October 1967) is the founder and chief executive of British websites Mumsnet and Gransnet.

Early life Roberts was educated at Guildford High School and at New College, Oxford, where she read PPE.

Career Roberts was named in the Media Guardian's 2010 power 100. Along with Mumsnet co-founder Carrie Longton, she was voted number 7 in BBC Woman's Hour's "Power List 2013" of the most powerful women in the UK. In May 2011, Roberts founded Gransnet, a sister site to Mumsnet, for the over-50s. She has appeared on The Media Show expressing concerns about legislation to regulate blogging, and in May 2013 she appeared on BBC Radio 4's Great Lives programme, nominating football manager Bill Shankly. On 24 December 2015, Roberts was listed by UK-based company Richtopia in the list of 500 Most Influential CEOs in the World. Roberts was appointed Commander of the Order of the British Empire (CBE) in the 2017 New Year Honours for services to the economy.

Personal life Roberts married journalist Ian Katz not long before founding Mumsnet. They had four children and separated in 2019.

Recognition She was recognized as one of the BBC's 100 women of 2013.

Inspiration and motivation In 2024, Justine Roberts wrote a 'Letter to her younger entrepreneurial self' in which she spoke about how the community around Mumsnet is what inspired her and the purpose they gave her guided the businesses. She also quoted the community's support as the same reason the business "never had to spend much more than maybe £100 on advertising".

References

Worked examples

Example 1 — a first encounter with Justine Roberts

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

In research: Justine Roberts appears in science 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 Justine Roberts 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: Justine Roberts is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1967 births, Alumni of New College, Oxford, British technology company founders, so understanding it makes those chapters shorter.
In everyday life: Look for Justine Roberts 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 Justine Roberts in 20 minutes

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

Frequently asked questions

What is Justine Roberts in simple terms?

Justine Juliette Alice Roberts (born October 1967) is the founder and chief executive of British websites Mumsnet and Gransnet. Early life Roberts was educated at Guildford High School and at New College, Oxford, where she read PPE.

Why does Justine Roberts matter?

Because it connects several science 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 Justine Roberts?

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 Justine Roberts.