60Primary Teacher big button pagehttp://nrich.maths.org/8697en 2012 http://nrich.maths.org/public/terms.phpWhat's the Problem with Problem Solving?Becoming a mathematical problem solver really is the point of doing mathematics, so this article offers ideas and strategies to ensure that every lesson can be a problem solving lesson.http://nrich.maths.org/13242Wed, 01 Dec 1999 00:00:01 +0000NRICH at Every StageWhether you are reflecting on the mathematical developments children have made over the year, or thinking about activities for a transition day this article offers plenty of ideas and tasks to support you.http://nrich.maths.org/13182Wed, 01 Dec 1999 00:00:01 +0000Using NRICH Solutions as a ResourceIn this article for primary teachers, we suggest ways in which children's solutions on the NRICH site can be used as a teaching resource in their own right.http://nrich.maths.org/12939Wed, 01 Dec 1999 00:00:01 +0000Hidden Gems: Tasks to Celebrate Our 20th BirthdayThis article for primary teachers outlines the reasons for us selecting the tasks in our Hidden Gems Feature.http://nrich.maths.org/12872Wed, 01 Dec 1999 00:00:01 +0000The Problem-solving ClassroomThis article for teachers outlines issues to consider when developing an environment in which problem solving can thrive and links to a range of related NRICH tasks.http://nrich.maths.org/12779Wed, 01 Dec 1999 00:00:01 +0000Always, Sometimes or Never? ShapeAre these statements always true, sometimes true or never true?http://nrich.maths.org/12673Wed, 01 Dec 1999 00:00:01 +0000Always, Sometimes or Never? KS1Are these statements relating to calculation and properties of shapes always true, sometimes true or never true?http://nrich.maths.org/12671Wed, 01 Dec 1999 00:00:01 +0000Approaching MidnightCan you beat the clock to the midnight hour?<a href="http://wild.maths.org/approaching-midnight"></a>http://nrich.maths.org/12440Wed, 01 Dec 1999 00:00:01 +0000Escape the VortexCan you always reach the exit first and escape the vortex?<a href="http://wild.maths.org/escape-vortex"></a>http://nrich.maths.org/12429Wed, 01 Dec 1999 00:00:01 +0000DropletsTry this slightly more challenging version of Driplets and see if you can find a winning strategy.<a href="http://wild.maths.org/droplets"></a>http://nrich.maths.org/12428Wed, 01 Dec 1999 00:00:01 +0000DripletsThis game follows on from Last Bead. Can you find a way to take the last drip or drips?<a href="http://wild.maths.org/driplets"></a>http://nrich.maths.org/12427Wed, 01 Dec 1999 00:00:01 +0000Last BeadTake turns to remove a bead from the string. Can you find a way to play so that you will always win?<a href="http://wild.maths.org/last-bead"></a>http://nrich.maths.org/12426Wed, 01 Dec 1999 00:00:01 +0000Seven CountersCan you be the player to take the last counter?<a href="http://wild.maths.org/seven-counters"></a>http://nrich.maths.org/12424Wed, 01 Dec 1999 00:00:01 +0000Count the CrayonsHow could you estimate the number of pencils/pens in these pictures?http://nrich.maths.org/10653Sun, 01 Dec 2013 00:00:01 +0000Build it UpCan you find all the ways to get 15 at the top of this triangle of numbers?http://nrich.maths.org/10592Wed, 01 Dec 1999 00:00:01 +0000Exploring FractionsThis article, written for primary teachers, links to rich tasks which will help develop the underlying concepts associated with fractions and offers some suggestions for models and images that help support ideas around fractions.http://nrich.maths.org/10496Fri, 01 Nov 2013 00:00:01 +0000What Could It Be?In this calculation, the box represents a missing digit. What could the digit be? What would the solution be in each case?http://nrich.maths.org/10479Tue, 01 Oct 2013 00:00:01 +0100Exploring Number Patterns You MakeExplore Alex's number plumber. What questions would you like to ask? What do you think is happening to the numbers?http://nrich.maths.org/8387Tue, 01 Feb 2011 00:00:01 +0000That Number Square!Exploring the structure of a number square: how quickly can you put the number tiles in the right place on the grid?http://nrich.maths.org/8169Tue, 01 May 2012 00:00:01 +0100How Would We Count?An activity centred around observations of dots and how we visualise number arrangement patterns.http://nrich.maths.org/8123Tue, 01 May 2012 00:00:01 +0100Take Three NumbersWhat happens when you add three numbers together? Will your answer be odd or even? How do you know?http://nrich.maths.org/8063Sun, 01 Apr 2012 00:00:01 +0100Using Low Threshold High Ceiling TasksThis article explores what LTHC tasks are and why they are a firm favourite here at NRICH. We recommend that you start by reading the article to understand what makes a task LTHC and then delve into some of the activities we have selected.http://nrich.maths.org/7701Fri, 01 Jul 2011 00:00:01 +0100Poly Plug RectanglesThe computer has made a rectangle and will tell you the number of spots it uses in total. Can you find out where the rectangle is?http://nrich.maths.org/7511Wed, 01 Jun 2011 00:00:01 +0100How OddThis problem challenges you to find out how many odd numbers there are between pairs of numbers. Can you find a pair of numbers that has four odds between them?http://nrich.maths.org/7190Tue, 01 Feb 2011 00:00:01 +0000Magic VsCan you put the numbers 1-5 in the V shape so that both 'arms' have the same total?http://nrich.maths.org/6274Tue, 01 Feb 2011 00:00:01 +0000Find the DifferencePlace the numbers 1 to 6 in the circles so that each number is the difference between the two numbers just below it.http://nrich.maths.org/6227Tue, 01 Feb 2011 00:00:01 +0000Animated TrianglesWatch this "Notes on a Triangle" film. Can you recreate parts of the film using cut-out triangles?http://nrich.maths.org/5968Tue, 01 Feb 2011 00:00:01 +0000Four GoThis challenge is a game for two players. Choose two numbers from the grid and multiply or divide, then mark your answer on the number line. Can you get four in a row before your partner?http://nrich.maths.org/5633Tue, 01 Feb 2011 00:00:01 +0000Method in Multiplying Madness?Watch our videos of multiplication methods that you may not have met before. Can you make sense of them?http://nrich.maths.org/5612Sat, 01 Oct 2011 00:00:01 +0100Sort the StreetSort the houses in my street into different groups. Can you do it in any other ways?http://nrich.maths.org/5157Tue, 01 Feb 2011 00:00:01 +0000Same Length TrainsHow many trains can you make which are the same length as Matt's, using rods that are identical?http://nrich.maths.org/4332Tue, 01 Feb 2011 00:00:01 +0000Number DifferencesPlace the numbers from 1 to 9 in the squares below so that the difference between joined squares is odd. How many different ways can you do this?http://nrich.maths.org/2790Tue, 01 Feb 2011 00:00:01 +0000Stone Age CountingWhat could these drawings, found in a cave in Spain, represent?http://nrich.maths.org/2472Tue, 01 Feb 2011 00:00:01 +0000Up and Down StaircasesOne block is needed to make an up-and-down staircase, with one step up and one step down. How many blocks would be needed to build an up-and-down staircase with 5 steps up and 5 steps down?http://nrich.maths.org/2283Tue, 01 Feb 2011 00:00:01 +0000Pass the Peas, PleaseA game for 2 or more players. Practise your addition and subtraction with the aid of a game board and some dried peas!http://nrich.maths.org/1247Tue, 01 Feb 2011 00:00:01 +0000Money BagsRam divided 15 pennies among four small bags. He could then pay any sum of money from 1p to 15p without opening any bag. How many pennies did Ram put in each bag?http://nrich.maths.org/1116Tue, 01 Feb 2011 00:00:01 +0000Zios and ZeptsOn the planet Vuv there are two sorts of creatures. The Zios have 3 legs and the Zepts have 7 legs. The great planetary explorer Nico counted 52 legs. How many Zios and how many Zepts were there?http://nrich.maths.org/1005Tue, 01 Feb 2011 00:00:01 +0000Highest and LowestPut operations signs between the numbers 3 4 5 6 to make the highest possible number and lowest possible number.http://nrich.maths.org/943Tue, 01 Feb 2011 00:00:01 +0000Heads and FeetOn a farm there were some hens and sheep. Altogether there were 8 heads and 22 feet. How many hens were there?http://nrich.maths.org/924Tue, 01 Feb 2011 00:00:01 +0000NoahNoah saw 12 legs walk by into the Ark. How many creatures did he see?http://nrich.maths.org/136Tue, 01 Feb 2011 00:00:01 +0000Teddy TownThere are nine teddies in Teddy Town - three red, three blue and three yellow. There are also nine houses, three of each colour. Can you put them on the map of Teddy Town according to the rules?http://nrich.maths.org/108Tue, 01 Feb 2011 00:00:01 +0000Maze 100Can you go through this maze so that the numbers you pass add to exactly 100?http://nrich.maths.org/91Tue, 01 Feb 2011 00:00:01 +0000Ice CreamYou cannot choose a selection of ice cream flavours that includes totally what someone has already chosen. Have a go and find all the different ways in which seven children can have ice cream.http://nrich.maths.org/77Tue, 01 Feb 2011 00:00:01 +0000WormsPlace this "worm" on the 100 square and find the total of the four squares it covers. Keeping its head in the same place, what other totals can you make?http://nrich.maths.org/40Tue, 01 Feb 2011 00:00:01 +0000Tea CupsPlace the 16 different combinations of cup/saucer in this 4 by 4 arrangement so that no row or column contains more than one cup or saucer of the same colour.http://nrich.maths.org/32Tue, 01 Feb 2011 00:00:01 +0000Prompt CardsThese two group activities use mathematical reasoning - one is numerical, one geometric.http://nrich.maths.org/23Tue, 01 Feb 2011 00:00:01 +0000TangramsCan you make five differently sized squares from the tangram pieces?http://nrich.maths.org/1Tue, 01 Feb 2011 00:00:01 +0000