60http://nrich.maths.org/primary-upperen 2012 http://nrich.maths.org/public/terms.phpHow do you know if your set of dominoes is complete?http://nrich.maths.org/9965Wed, 01 May 2013 00:00:01 +0100Explore these upper primary activities which focus on making, recognising, continuing and explaining number patterns. Trying to explain why the pattern occurs will really deepen your understanding of the situation.http://nrich.maths.org/9951Wed, 01 May 2013 00:00:01 +0100How many necklaces can you make that fit the rule? How do you know you've got them all?http://nrich.maths.org/9523Fri, 01 Feb 2013 00:00:01 +0000How could you arrange at least two dice in a stack so that the total of the visible spots is 18?http://nrich.maths.org/8586Fri, 01 Feb 2013 00:00:01 +0000This interactivity allows you to sort logic blocks by dragging their images.http://nrich.maths.org/7192Tue, 01 Feb 2011 00:00:01 +0000This task develops spatial reasoning skills. By framing and asking questions a member of the team has to find out what mathematical object they have chosen.http://nrich.maths.org/6986Tue, 01 Feb 2011 00:00:01 +0000This task requires learners to explain and help others, asking and answering questions.http://nrich.maths.org/6981Tue, 01 Feb 2011 00:00:01 +0000This task requires learners to explain and help others, asking and answering questions.http://nrich.maths.org/6980Tue, 01 Feb 2011 00:00:01 +0000This task depends on groups working collaboratively, discussing and reasoning to agree a final product.http://nrich.maths.org/6978Tue, 01 Feb 2011 00:00:01 +0000A task which depends on members of the group working collaboratively to reach a single goal.http://nrich.maths.org/6973Tue, 01 Feb 2011 00:00:01 +0000In this activity, the computer chooses a times table and shifts it. Can you work out the table and the shift each time?http://nrich.maths.org/6863Tue, 01 Feb 2011 00:00:01 +0000This big box multiplies anything that goes inside it by the same number. If you know the numbers that come out, what multiplication might be going on in the box?http://nrich.maths.org/5576Tue, 01 Feb 2011 00:00:01 +0000This practical problem challenges you to make quadrilaterals with a loop of string. You'll need some friends to help!http://nrich.maths.org/2913Tue, 01 Feb 2011 00:00:01 +0000There is a clock-face where the numbers have become all mixed up. Can you find out where all the numbers have got to from these ten statements?http://nrich.maths.org/2127Tue, 01 Feb 2011 00:00:01 +0000How would you move the bands on the pegboard to alter these shapes?http://nrich.maths.org/1813Tue, 01 Feb 2011 00:00:01 +0000Ten cards are put into five envelopes so that there are two cards in each envelope. The sum of the numbers inside it is written on each envelope. What numbers could be inside the envelopes?http://nrich.maths.org/1177Tue, 01 Feb 2011 00:00:01 +0000Ram 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 +0000An investigation involving adding and subtracting sets of consecutive numbers. Lots to find out, lots to explore.http://nrich.maths.org/31Tue, 01 Feb 2011 00:00:01 +0000