A game for 2 players. In these activities, you can practise your skills with adding and subtracting. Here is a chance to play a version of the classic Countdown Game. How many creatures did he see? Use the cards to gather all the information you need. In the second article, Jennie offers you practical ways to investigate aspects of your classroom culture and in the third article, she suggests three ways in which we can support children in becoming competent problem solvers. Where Can We Visit?

Amy’s Dominoes Age 7 to 11 Challenge Level: Half Time Age 5 to 11 Challenge Level: Maisy Goes Camping Age 3 to 5 Using everyday language to talk about addition and subtraction. How could you sort the cards? Number Differences Age 7 to 11 Challenge Level: Pairs of Numbers Age 5 to 7 Challenge Level:

## Subtraction Surprise

Use your addition and subtraction skills, combined with some strategic thinking, to beat your partner at this game. Two Dice Age 5 to 7 Challenge Level: What is the same? Ram divided 15 pennies among four small bags. Talk to your friends about how you work them out.

# Problem Solving :

Who said that adding, subtracting, multiplying and dividing couldn’t be fun? What questions would you like to ask?

What was the total and how could this be done? The article provides a summary of the elementary ideas about vectors usually met in school mathematics, describes what vectors are and how to add, subtract and pfoblem them by scalars and indicates.

Use the dice numbers and either addition or subtraction to get three numbers in a straight line.

Try grouping the dominoes in the ways described. Look at three ‘next door neighbours’ amongst the counting numbers. Given a target number, say 23, and a range of numbers to choose from, sayplayers take it in turns to add to the running total to hit their target. To support this aim, 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.

Here are some rods that are different colours. Can you work out what a, b and c are in this sum? Try out some calculations.

This big box multiplies anything that goes inside it by the same number. Addition and Subtraction Age 7 to 11 Have a go at these upper primary activities which all involve addition, subtraction or both.

What’s in the Box? Can you use the information to find out when Kate was born? More Strategy Nrih Upper Primary Age 7 to 11 These upper primary strategy games supplement those in our strategy games feature and nfich help improve children’s logical thinking skills.

# Square Subtraction :

Roll These Dice Roll two red dice and a green dice. Who said that adding couldn’t be fun? Cuisenaire Counting Age 5 to 7 Challenge Level: They are our favourites because they really get you thinking mathematically. 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. Show that for 4 terms there are 5 cases and find the number of cases for 5 terms and 6 terms.

Number Balance Age 5 to 7 Challenge Level: Number Here are some exciting activities which use numbers in lots of different ways. She gave the clown six coins to pay for it. Proof by Logical Argument Age 5 to 11 These tasks are useful contexts in which to explore proof by logical argument.

Games – Lower Primary Age 5 to 7 Playing these games will help to test your understanding of different topics. The sum of each side of the triangle should equal the number in its centre. An investigation involving adding and subtracting sets of consecutive numbers. An investigation involving adding and subtracting sets of consecutive numbers. Games Age 5 to 11 Games primary teachers.