### More Less is More

### Factors and Multiples Game

A game in which players take it in turns to choose a number. Can you block your opponent?

### The Remainders Game

Play this game and see if you can figure out the computer's chosen number.

### Consecutive Numbers

An investigation involving adding and subtracting sets of consecutive numbers. Lots to find out, lots to explore.

### Nice or Nasty

### Number Lines in Disguise

### Remainders

### Train Spotters' Paradise

### Odds, Evens and More Evens

Alison, Bernard and Charlie have been exploring sequences of odd and even numbers, which raise some intriguing questions...

### Magic Letters

### Strange Bank Account

Imagine a very strange bank account where you are only allowed to do two things...

### Parallelogram It

Players take it in turns to choose a dot on the grid. The winner is the first to have four dots that can be joined to form a parallelogram.

### Dicey Operations

Who said that adding, subtracting, multiplying and dividing couldn't be fun?

### Have you got it?

### Summing Consecutive Numbers

15 = 7 + 8 and 10 = 1 + 2 + 3 + 4. Can you say which numbers can be expressed as the sum of two or more consecutive integers?

### Picturing Square Numbers

Square numbers can be represented as the sum of consecutive odd numbers. What is the sum of 1 + 3 + ..... + 149 + 151 + 153?

### Number Pyramids

Try entering different sets of numbers in the number pyramids. How does the total at the top change?

### Square It

Players take it in turns to choose a dot on the grid. The winner is the first to have four dots that can be joined to form a square.

### More Number Pyramids

When number pyramids have a sequence on the bottom layer, some interesting patterns emerge...