60Lower Secondary big button pagehttp://nrich.maths.org/secondary-loweren 2012 http://nrich.maths.org/public/terms.phpHidden Treasureshttp://nrich.maths.org/12880Wed, 01 Dec 1999 00:00:01 +0000Wild Maths - share what you have tried and discoveredHere's how you can send your solutions to these Wild Maths problems. You may be featured in our Showcase!http://nrich.maths.org/12320Wed, 01 Dec 1999 00:00:01 +0000Trusting the TabloidsCan you match the cards and figure out whether the tabloid headlines can be trusted?http://nrich.maths.org/12172Wed, 01 Dec 1999 00:00:01 +0000Risk and CrimeAre you at risk of being a victim of crime? How does your perception of that risk compare with the facts and figures?http://nrich.maths.org/12167Wed, 01 Dec 1999 00:00:01 +0000Statins and Risk"Statins cut the risks of heart attacks and strokes by 40%"<br />
Should the Professor take statins? Can you help him decide?http://nrich.maths.org/12165Wed, 01 Dec 1999 00:00:01 +0000Journey to SchoolHow risky is your journey to school?http://nrich.maths.org/12164Wed, 01 Dec 1999 00:00:01 +0000How Risky is a Bacon Sandwich?Newspapers said that eating a bacon sandwich every day raises the risk of bowel cancer by 20%. Should you be concerned?http://nrich.maths.org/12163Wed, 01 Dec 1999 00:00:01 +0000Angles in Three SquaresDrawing the right diagram can help you to prove a result about the angles in a line of squares.http://nrich.maths.org/11852Wed, 01 Dec 1999 00:00:01 +0000An Equilateral Triangular ProblemTake an equilateral triangle and cut it into smaller pieces. What can you do with them?http://nrich.maths.org/11501Wed, 01 Dec 1999 00:00:01 +0000Polygon PicturesCan you work out how these polygon pictures were drawn, and use that to figure out their angles?http://nrich.maths.org/11498Wed, 01 Dec 1999 00:00:01 +0000Star PolygonsDraw some stars and measure the angles at their points. Can you find and prove a result about their sum?http://nrich.maths.org/11456Wed, 01 Dec 1999 00:00:01 +0000Olympic MeasuresThese Olympic quantities have been jumbled up! Can you put them back together again?http://nrich.maths.org/8318Fri, 01 Jun 2012 00:00:01 +0100Charting SuccessCan you make sense of the charts and diagrams that are created and used by sports competitors, trainers and statisticians?http://nrich.maths.org/7735Mon, 01 Aug 2011 00:00:01 +0100Olympic Records
Can you deduce which Olympic athletics events are represented by the graphs?
http://nrich.maths.org/7489Wed, 01 Jun 2011 00:00:01 +0100Who's the Best?Which countries have the most naturally athletic populations?http://nrich.maths.org/7367Wed, 01 Jun 2011 00:00:01 +0100Speed-time Problems at the OlympicsHave you ever wondered what it would be like to race against Usain Bolt?http://nrich.maths.org/7322Wed, 01 Jun 2011 00:00:01 +0100Medal MuddleCountries from across the world competed in a sports tournament. Can you devise an efficient strategy to work out the order in which they finished?http://nrich.maths.org/661Tue, 01 Feb 2011 00:00:01 +0000Counting FactorsIs there an efficient way to work out how many factors a large number has?http://nrich.maths.org/480Tue, 01 Feb 2011 00:00:01 +0000Latin NumbersCan you create a Latin Square from multiples of a six digit number?http://nrich.maths.org/434Tue, 01 Feb 2011 00:00:01 +0000Rationals Between...What fractions can you find between the square roots of 65 and 67?http://nrich.maths.org/344Tue, 01 Feb 2011 00:00:01 +0000Gift of GemsFour jewellers share their stock. Can you work out the relative values of their gems?http://nrich.maths.org/330Tue, 01 Feb 2011 00:00:01 +0000Building TetrahedraCan you make a tetrahedron whose faces all have the same perimeter?http://nrich.maths.org/272Tue, 01 Feb 2011 00:00:01 +0000Calendar CapersChoose any three by three square of dates on a calendar page...http://nrich.maths.org/85Tue, 01 Feb 2011 00:00:01 +0000