60Secondary Teacher Big Button Pagehttp://nrich.maths.org/teacher-secondaryen 2012 http://nrich.maths.org/public/terms.phpIntroductory VideoAn introductory video to the Probability and Evidence collectionhttp://nrich.maths.org/12241Wed, 01 Dec 1999 00:00:01 +0000Matching CriminalsDNA profiling is an invaluable tool for the police. However, when it comes to probability, things aren't always as straightforward as they seem.http://nrich.maths.org/12215Wed, 01 Dec 1999 00:00:01 +0000The ELISA TestIn 1% of cases, an HIV test gives a positive result for someone who is HIV negative. How likely is it that someone who tests positive has HIV?http://nrich.maths.org/12178Wed, 01 Dec 1999 00:00:01 +0000Do Rare Events Happen?I'd be very surprised if I had three children all with the same birthday, but I read in the paper that it happened to one family...http://nrich.maths.org/12177Wed, 01 Dec 1999 00:00:01 +0000Spots and Measles99% of people who have measles have spots. Ben has spots. Do you think he has measles?http://nrich.maths.org/12171Wed, 01 Dec 1999 00:00:01 +0000Chance CombinationsCan you design a bingo board that gives you the best chance of winning?http://nrich.maths.org/12156Wed, 01 Dec 1999 00:00:01 +0000Tools for Thinking about ProbabilityCan you design your own probability scale?<br />
How do you describe the different parts?http://nrich.maths.org/12152Wed, 01 Dec 1999 00:00:01 +0000What do you know about Probability? (2)What are the likelihoods of different events when you roll a dice?http://nrich.maths.org/12151Wed, 01 Dec 1999 00:00:01 +0000What Do You Know about Probability? (1)What is special about dice?<br />
How can we use dice to explore probability?http://nrich.maths.org/12150Wed, 01 Dec 1999 00:00:01 +0000NRICH Resources for Every OccasionThis article highlights NRICH tasks that can be used for a variety of purposes in the classroom.http://nrich.maths.org/11252Mon, 01 Sep 2014 00:00:01 +0100What Are Rich Tasks?What are rich tasks and why do they matter?http://nrich.maths.org/11249Mon, 01 Sep 2014 00:00:01 +0100Tilted Squares - Teaching Using Rich TasksWatch Charlie and Alison teaching a lesson and read about the teaching points they consider to be important.http://nrich.maths.org/11248Mon, 01 Sep 2014 00:00:01 +0100Puzzling Place ValueCan you explain what is going on in these puzzling number tricks?http://nrich.maths.org/11215Wed, 01 Apr 2015 00:00:01 +0100Teaching Secondary Mathematics Using NRICH ResourcesAn introduction to using secondary NRICH activities in the classroom.http://nrich.maths.org/11121Wed, 01 Oct 2014 00:00:01 +0100ReversalsWhere should you start, if you want to finish back where you started?http://nrich.maths.org/11118Mon, 01 Sep 2014 00:00:01 +0100Making a DifferenceHow many different differences can you make?http://nrich.maths.org/11012Wed, 01 Apr 2015 00:00:01 +0100Beach HutsCan you figure out how sequences of beach huts are generated?http://nrich.maths.org/11008Mon, 01 Sep 2014 00:00:01 +0100What we think and why we think itThe Secondary Team's beliefs about teaching mathematics, and the ideas that have inspired us.http://nrich.maths.org/8068Thu, 01 Jan 2015 00:00:01 +0000