60All NRICH live resourceshttp://nrich.maths.org/en 2012 http://nrich.maths.org/public/terms.phpOverlapsCan you find ways to put numbers in the overlaps so the rings have equal totals?http://nrich.maths.org/11112Mon, 01 Sep 2014 00:00:01 +0100CryptarithmsCan you crack these cryptarithms?http://nrich.maths.org/11107Mon, 01 Sep 2014 00:00:01 +0100SolutionSolution to TWO and TWOhttp://nrich.maths.org/10599Fri, 01 Nov 2013 00:00:01 +0000Mixing Lemonade Posterhttp://nrich.maths.org/11226Mon, 01 Sep 2014 00:00:01 +0100Drawing SquaresTake a look at the video showing squares drawn on dotty grids...http://nrich.maths.org/10700Sat, 01 Feb 2014 00:00:01 +0000Exploring DiagonalsMove the corner of the rectangle. Can you work out what the purple number represents?http://nrich.maths.org/10666Sat, 01 Feb 2014 00:00:01 +0000Rhombuses from DiagonalsTake a look at the video showing rhombuses and their diagonals...http://nrich.maths.org/10704Sat, 01 Feb 2014 00:00:01 +0000Getting Round the CityIn a city with a grid system of roads, how do you get from A to B?http://nrich.maths.org/10796Sat, 01 Feb 2014 00:00:01 +0000Are We Nearly There?Can you describe the route followed by the arrows?http://nrich.maths.org/10732Sat, 01 Feb 2014 00:00:01 +0000Advanced Mathematics on Dotty GridsA dotty grid is a very simple mathematical structure that offers potential for very deep thought...http://nrich.maths.org/10813Sat, 01 Mar 2014 00:00:01 +0000Picture This!http://nrich.maths.org/9683Thu, 01 Nov 2012 00:00:01 +0000Factorisable QuadraticsThis will encourage you to think about whether all quadratics can be factorised and to develop a better understanding of the effect that changing the coefficients has on the factorised form.http://nrich.maths.org/11265Mon, 01 Sep 2014 00:00:01 +0100Powerful QuadraticsThis comes in two parts, with the first being less fiendish than the second. Itâ€™s great for practising both quadratics and laws of indices, and you can get a lot from making sure that you find all the solutions. For a real challenge (requiring a bit more knowledge), you could consider finding the complex solutions.http://nrich.maths.org/11263Mon, 01 Sep 2014 00:00:01 +0100Giants Posterhttp://nrich.maths.org/11227Mon, 01 Sep 2014 00:00:01 +0100Nine EigenExplore how matrices can fix vectors and vector directions.http://nrich.maths.org/6877Tue, 01 Feb 2011 00:00:01 +0000