60All NRICH live resourceshttp://nrich.maths.org/en 2012 http://nrich.maths.org/public/terms.phpFinding CirclesCan you find the centre and equation of a circle given a number of points on the circle? When is it possible and when is it not?http://nrich.maths.org/11485Sun, 01 Mar 2015 00:00:01 +0000Irrational ConstructionsWhat questions does the spiral construction prompt you to ask?http://nrich.maths.org/11605Fri, 01 May 2015 00:00:01 +0100Staircase SequencesCan you make sense of these unusual fraction sequences?http://nrich.maths.org/11593Fri, 01 May 2015 00:00:01 +0100Irrational RootsYou're used to working with quadratics with integer roots, but what about when the roots are irrational?http://nrich.maths.org/11596Fri, 01 May 2015 00:00:01 +0100Nested SurdsCan you find values that make these surd statements true?http://nrich.maths.org/11597Fri, 01 May 2015 00:00:01 +0100Which Quadratic?In this activity you will need to work in a group to connect different representations of quadratics.http://nrich.maths.org/11266Mon, 01 Sep 2014 00:00:01 +0100Two-way FunctionsThis gives you an opportunity to explore roots and asymptotes of functions, both by identifying properties that functions have in common and also by trying to find functions that have particular properties. You may like to use the list of functions in the Hint, which includes enough functions to complete the table plus some extras.You might like to work on this problem in a pair or small group,
or to compare your table to someone else's to see where you have used the same functions and where not.http://nrich.maths.org/11301Sat, 01 Nov 2014 00:00:01 +0000Absolutely!What can you say about this graph? A number of questions have been suggested to help you look at the graph in different ways. Use these to help you make sense of this and similar graphs.http://nrich.maths.org/11298Sat, 01 Nov 2014 00:00:01 +0000Picture the Process IHow does the temperature of a cup of tea behave over time? What is the radius of a spherical balloon as it is inflated? What is the distance fallen by a parachutist after jumping out of a plane? After sketching graphs for these and other real-world processes, you are offered a selection of equations to match to these graphs and processes.http://nrich.maths.org/11299Sat, 01 Nov 2014 00:00:01 +0000Giants Posterhttp://nrich.maths.org/11227Mon, 01 Sep 2014 00:00:01 +0100Which Parabola?Can you work out the equations of all these mixed up parabolas?http://nrich.maths.org/11646Mon, 01 Jun 2015 00:00:01 +0100Can You Find... Trigonometric Edition Part 2Can you find trig graphs to satisfy a variety of conditions?http://nrich.maths.org/11647Mon, 01 Jun 2015 00:00:01 +0100Slippery SlopesWhen you transform a function, what can you work out about the gradient?http://nrich.maths.org/11645Mon, 01 Jun 2015 00:00:01 +0100Name That Graph AgainIf you know some information about a parabola, can you work out its equation?http://nrich.maths.org/11644Mon, 01 Jun 2015 00:00:01 +0100Factorial FragmentsHere you have an expression containing logs and factorials! What can you do with it?http://nrich.maths.org/11310Mon, 01 Dec 2014 00:00:01 +0000