A how-to set of instructions for creating a quadratic function exploration tool in GeoGebra.

On MathsFaculty: https://mathslinks.net/faculty/how-to-make-a-quadratic-function-exploration-tool

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A car advertisement that refers to the average number of children in a family being 2.3.

What does an average of 2.3 mean when talking about people (or any objects)?

On MathsLinks: https://mathslinks.net/links/2.3-children

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Sometimes it's hard to know what statistics are worthy of trust. But we shouldn't count out stats altogether ... instead, we should learn to look behind them. In this delightful, hilarious talk, data journalist Mona Chalabi shares handy tips to help question, interpret and truly understand what the numbers are saying.

On MathsLinks: https://mathslinks.net/links/3-ways-to-spot-a-bad-statistic

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A logic puzzle involving triangles made from matchsticks.

On MathsLinks: https://mathslinks.net/links/triangular-matchstick-puzzle

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In 2018 the kg will be defined by Planck's constant, not a hunk of metal.

On MathsLinks: https://mathslinks.net/links/how-were-redefining-the-kg

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A great discussion starter as a follow-up to similar triangles or maybe trigonometry.

The Forestry Commission England shares a technique for measuring the height of a tree using a stick.

[This video is hosted on Facebook]

On MathsLinks: https://mathslinks.net/links/how-to-measure-a-tree-using-a-stick-and-some-simple-maths

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As the cargo director on the maiden voyage of the S.S. Buoyant, you’ve agreed to transport several tanks containing the last specimens of an endangered fish species to their new aquarium. Unfortunately, the boat is battered by a fierce storm, throwing your precious cargo overboard. Can you get the fish to safety and save the day?

On MathsLinks: https://mathslinks.net/links/can-you-solve-the-fish-riddle

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When they’re used well, graphs can help us intuitively grasp complex data. But as visual software has enabled more usage of graphs throughout all media, it has also made them easier to use in a careless or dishonest way — and as it turns out, there are plenty of ways graphs can mislead and outright manipulate. Lea Gaslowitz shares some things to look out for.

On MathsLinks: https://mathslinks.net/links/how-to-spot-a-misleading-graph

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Steve Mould measures how the speed of a fidget spinner changes to show why it's so hard to get one to spin for substantially longer.

On MathsLinks: https://mathslinks.net/links/exponential-decay-why-your-fidget-spinner-wont-spin-for-longer

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Some nice activities designed for revising time with high school students. Some would work best if the ideas were used to develop activities related to students' own local area transport and events. See under **Numeracy activities to develop understanding of time** for the PowerPoint file.

On MathsLinks: https://mathslinks.net/links/numeracy-activities-to-develop-understanding-of-time

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This puzzle shows students the decisions involved in linking a network between houses in a muddy city. It can lead on to a discussion of minimal spanning tree algorithms for optimizing networks.

On MathsLinks: https://mathslinks.net/links/minimal-spanning-trees

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An interactive version of Algebra Tiles for visualising directed number operations, expanding and factorising, solving equations.

On MathsLinks: https://mathslinks.net/links/mathenaeum-algebra-tiles

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Exploding Dots support interactive modelling and problem solving in arithmetic, representation of integers, and polynomial division. They provide an engaging and dynamic representation that is consistent across a broad range of concepts.

On MathsLinks: https://mathslinks.net/links/exploding-dots

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Interactive bar models for visualising fractions, comparing fractions, operating with fraction and visualing decimals, percentages and ratios.4723

On MathsLinks: https://mathslinks.net/links/mathenaeum-fractions-decimals-and-percentages

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These activities involve both Part-Whole and Comparison Bar Models as representations of word problems involving the sum or difference of quantities, or where the quantities made up of equal parts. These models aid extracting the information from the problem, representing it pictorially, and visualising the solution process.

On MathsLinks: https://mathslinks.net/links/modelling-word-problems-with-singapore-bar-models

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A number which could earn its "finder" a $1000 prize.

The prime factorisation of 13532385396179 = 13 × 53² × 3853 × 96179

On MathsLinks: https://mathslinks.net/links/13532385396179-numberphile

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James Grime shows how the Trinity Mathematical Society solves teh squared squares problem using networks.

On MathsLinks: https://mathslinks.net/links/squared-squares

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Matt Parker measures the speed that a fidget spinner spins.

On MathsLinks: https://mathslinks.net/links/how-fast-is-a-fidget-spinner

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Using algebra to describe patterns mathematically. This activity employs various visual patterns, constructed with matchsticks. Drag the matches around to study each pattern and work out its underlying mathematical nature. See if you can describe each pattern using algebra.

On MathsLinks: https://mathslinks.net/links/matchstick-patterns

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It is easy to forget that "summary statistics" such as mean, range, deviation, correlation etc are only summaries. Anscombe's Quartet is an informative demonstration of the dangers of overlooking this fact. This activity uses 3 sets of values from the quartet, as well as supports student experimentation using their own data. Calculation of sum, mean, standard devation and plotting of points is included.

On MathsLinks: https://mathslinks.net/links/exploring-data-different-data-same-statistics

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