The Legacy Age 14 to 16 Challenge Level: A task which depends on members of the group noticing the needs of others and responding. Factor Lines Age 7 to 14 Challenge Level: Age 7 to 11 Working Backwards at KS2 The upper primary tasks in this collection could each be solved by working backwards. Can you replace the letters with numbers?

Lots to find out, lots to explore. Look at what happens when you take a number, square it and subtract your answer. The Zios have 3 legs and the Zepts have 7 legs. The idea of this game is to add or subtract the two numbers on the dice and cover the result on the grid, trying to get a line of three. Fifteen Cards Age 7 to 11 Challenge Level:

How about the largest possible numbers? How many extra pebbles are added each time?

# Multiplication and Division KS2 :

Can solvibg replace the letters with numbers? How about every third point? A Year of Investigations Age 5 to 14 This article for teachers suggests ideas for activities built around 10 and Choose four different digits from sloving put one in each box so that the resulting four two-digit numbers add to a total of Roll two red dice and a green dice.

Money Bags Age 5 to 11 Challenge Level: Choose four different digits from and put one in each box so that the resulting four two-digit numbers add to a total of Here are the prices for 1st and 2nd class mail within the UK.

To support this addituon, members of the NRICH team work in a wide range of capacities, including providing professional development for teachers wishing to embed rich mathematical tasks into everyday classroom practice.

George and Jim want to buy a chocolate bar. In this article for teachers, Lynne explains why it should be.

# Working Systematically at KS2 :

Ribbon Squares Age 7 to 11 Challenge Level: How many pennies did Ram put in each bag? These eleven shapes each stand for a different number. Go through the maze, collecting and losing your money as you go.

Which is quicker, counting up to 30 in ones or counting up to in tens? This big box multiplies anything that goes inside it by the same number. Factor track is not a race but a game of skill.

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Are you surprised by the results? Inky Cube Age 7 to 14 Challenge Level: Can you pdoblem what you’ve found out to predict the number for four red and two green?

Can you make square numbers by adding two prime numbers together? We have exactly coins. Can you prove it? A game for two people, or play online. Beads and Bags Age 5 to 11 Challenge Level: What do you notice about the pink numbers? What do you notice?

The picture shows a lighthouse and many underwater creatures. Sealed Solution Age 7 to adcition Challenge Level: We have the correct money, not a penny more, not a penny less! Money Line-up Age 5 to 7 Challenge Level: What is the smallest number of coins needed to make up 12 dollars and 83 cents?