Plinko ProbabilityA simulation of a Quincunx (Galton Board) which can be used to create the bell shaped curve of the normal distribution. 
Attribution PhET Interactive Simulations, University of Colorado Boulder, https://phet.colorado.edu.
The Quincunx, commonly known as the Galton Board, is a statistical device invented by Sir Francis Galton in the 19th century to demonstrate the central limit theorem and the normal distribution. It consists of an upright board with a series of pegs arranged in a triangular pattern. Small balls are dropped from the top of the board, and as they descend, they bounce off the pegs in a random fashion, either to the left or right. At the bottom of the board are a series of bins where the balls collect. Over time, as many balls are dropped, they tend to form a distribution in the bins that resembles a bell curve or normal distribution. The Galton Board visually illustrates the concept of randomness and how individual random events can collectively produce a predictable pattern. It has been used extensively in educational settings to teach principles of probability and statistics.


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Mathematicians are not the people who find Maths easy; they are the people who enjoy how mystifying, puzzling and hard it is. Are you a mathematician? Comment recorded on the 19 November 'Starter of the Day' page by Lesley Sewell, Ysgol Aberconwy, Wales: "A Maths colleague introduced me to your web site and I love to use it. The questions are so varied I can use them with all of my classes, I even let year 13 have a go at some of them. I like being able to access Starters for the whole month so I can use favourites with classes I see at different times of the week. Thanks." Comment recorded on the 9 April 'Starter of the Day' page by Jan, South Canterbury: "Thank you for sharing such a great resource. I was about to try and get together a bank of starters but time is always required elsewhere, so thank you." 
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Numeracy"Numeracy is a proficiency which is developed mainly in Mathematics but also in other subjects. It is more than an ability to do basic arithmetic. It involves developing confidence and competence with numbers and measures. It requires understanding of the number system, a repertoire of mathematical techniques, and an inclination and ability to solve quantitative or spatial problems in a range of contexts. Numeracy also demands understanding of the ways in which data are gathered by counting and measuring, and presented in graphs, diagrams, charts and tables." Secondary National Strategy, Mathematics at key stage 3 

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