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  #### Resources tagged with smartphone similar to Minus One Party:
  
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  ### There are 118 results
  
  Broad Topics > Information and Communications Technology > smartphone
  
  ### Weights
  
  ##### Stage: 3 Challenge Level:
  
  Different combinations of the weights available allow you to make different totals. Which totals can you make?
  
  ### Consecutive Negative Numbers
  
  ##### Stage: 3 Challenge Level:
  
  Do you notice anything about the solutions when you add and/or subtract consecutive negative numbers?
  
  ##### Stage: 3 Challenge Level:
  
  A game for 2 or more people, based on the traditional card game Rummy. Players aim to make two `tricks', where each trick has to consist of a picture of a shape, a name that describes that shape, and. . . .
  
  ### Ben's Game
  
  ##### Stage: 3 Challenge Level:
  
  Ben passed a third of his counters to Jack, Jack passed a quarter of his counters to Emma and Emma passed a fifth of her counters to Ben. After this they all had the same number of counters.
  
  ### American Billions
  
  ##### Stage: 3 Challenge Level:
  
  Play the divisibility game to create numbers in which the first two digits make a number divisible by 2, the first three digits make a number divisible by 3...
  
  ### Two and Two
  
  ##### Stage: 3 Challenge Level:
  
  How many solutions can you find to this sum? Each of the different letters stands for a different number.
  
  ### Consecutive Numbers
  
  ##### Stage: 2 and 3 Challenge Level:
  
  An investigation involving adding and subtracting sets of consecutive numbers. Lots to find out, lots to explore.
  
  ### Number Daisy
  
  ##### Stage: 3 Challenge Level:
  
  Can you find six numbers to go in the Daisy from which you can make all the numbers from 1 to a number bigger than 25?
  
  ##### Stage: 3 Challenge Level:
  
  How many different symmetrical shapes can you make by shading triangles or squares?
  
  ### Summing Consecutive Numbers
  
  ##### Stage: 3 Challenge Level:
  
  Many numbers can be expressed as the sum of two or more consecutive integers. For example, 15=7+8 and 10=1+2+3+4. Can you say which numbers can be expressed in this way?
  
  ### Special Numbers
  
  ##### Stage: 3 Challenge Level:
  
  My two digit number is special because adding the sum of its digits to the product of its digits gives me my original number. What could my number be?
  
  ### The Spider and the Fly
  
  ##### Stage: 4 Challenge Level:
  
  A spider is sitting in the middle of one of the smallest walls in a room and a fly is resting beside the window. What is the shortest distance the spider would have to crawl to catch the fly?
  
  ### Squares in Rectangles
  
  ##### Stage: 3 Challenge Level:
  
  A 2 by 3 rectangle contains 8 squares and a 3 by 4 rectangle contains 20 squares. What size rectangle(s) contain(s) exactly 100 squares? Can you find them all?
  
  ### Eight Hidden Squares
  
  ##### Stage: 2 and 3 Challenge Level:
  
  On the graph there are 28 marked points. These points all mark the vertices (corners) of eight hidden squares. Can you find the eight hidden squares?
  
  ### Marbles in a Box
  
  ##### Stage: 3 Challenge Level:
  
  How many winning lines can you make in a three-dimensional version of noughts and crosses?
  
  ### One and Three
  
  ##### Stage: 4 Challenge Level:
  
  Two motorboats travelling up and down a lake at constant speeds leave opposite ends A and B at the same instant, passing each other, for the first time 600 metres from A, and on their return, 400. . . .
  
  ### What's it Worth?
  
  ##### Stage: 3 and 4 Challenge Level:
  
  There are lots of different methods to find out what the shapes are worth - how many can you find?
  
  ### Fence It
  
  ##### Stage: 3 Challenge Level:
  
  If you have only 40 metres of fencing available, what is the maximum area of land you can fence off?
  
  ### Product Sudoku
  
  ##### Stage: 3 Challenge Level:
  
  The clues for this Sudoku are the product of the numbers in adjacent squares.
  
  ### Handshakes
  
  ##### Stage: 3 Challenge Level:
  
  Can you find an efficient method to work out how many handshakes there would be if hundreds of people met?
  
  ### The Greedy Algorithm
  
  ##### Stage: 3 Challenge Level:
  
  The Egyptians expressed all fractions as the sum of different unit fractions. The Greedy Algorithm might provide us with an efficient way of doing this.
  
  ### Think of Two Numbers
  
  ##### Stage: 3 Challenge Level:
  
  Think of two whole numbers under 10, and follow the steps. I can work out both your numbers very quickly. How?
  
  ### What's Possible?
  
  ##### Stage: 4 Challenge Level:
  
  Many numbers can be expressed as the difference of two perfect squares. What do you notice about the numbers you CANNOT make?
  
  ### Sweet Shop
  
  ##### Stage: 3 Challenge Level:
  
  Five children went into the sweet shop after school. There were choco bars, chews, mini eggs and lollypops, all costing under 50p. Suggest a way in which Nathan could spend all his money.
  
  ### How Old Am I?
  
  ##### Stage: 4 Challenge Level:
  
  In 15 years' time my age will be the square of my age 15 years ago. Can you work out my age, and when I had other special birthdays?
  
  ### Minus One Two Three
  
  ##### Stage: 4 Challenge Level:
  
  Substitute -1, -2 or -3, into an algebraic expression and you'll get three results. Is it possible to tell in advance which of those three will be the largest ?
  
  ### Picturing Square Numbers
  
  ##### Stage: 3 Challenge Level:
  
  Square numbers can be represented as the sum of consecutive odd numbers. What is the sum of 1 + 3 + ..... + 149 + 151 + 153?
  
  ### Three Cubes
  
  ##### Stage: 4 Challenge Level:
  
  Can you work out the dimensions of the three cubes?
  
  ### Painted Cube
  
  ##### Stage: 3 Challenge Level:
  
  Imagine a large cube made from small red cubes being dropped into a pot of yellow paint. How many of the small cubes will have yellow paint on their faces?
  
  ### Cuboids
  
  ##### Stage: 3 Challenge Level:
  
  Find a cuboid (with edges of integer values) that has a surface area of exactly 100 square units. Is there more than one? Can you find them all?
  
  ### Cuboid Challenge
  
  ##### Stage: 3 Challenge Level:
  
  What size square corners should be cut from a square piece of paper to make a box with the largest possible volume?
  
  ### Sending a Parcel
  
  ##### Stage: 3 Challenge Level:
  
  What is the greatest volume you can get for a rectangular (cuboid) parcel if the maximum combined length and girth are 2 metres?
  
  ### Do You Feel Lucky?
  
  ##### Stage: 3 Challenge Level:
  
  Some people offer advice on how to win at games of chance, or how to influence probability in your favour. Can you decide whether advice is good or not?
  
  ### M, M and M
  
  ##### Stage: 3 Challenge Level:
  
  If you are given the mean, median and mode of five positive whole numbers, can you find the numbers?
  
  ### Curvy Areas
  
  ##### Stage: 4 Challenge Level:
  
  Have a go at creating these images based on circles. What do you notice about the areas of the different sections?
  
  ### Mirror, Mirror...
  
  ##### Stage: 3 Challenge Level:
  
  Explore the effect of reflecting in two parallel mirror lines.
  
  ### Route to Infinity
  
  ##### Stage: 3 Challenge Level:
  
  Can you describe this route to infinity? Where will the arrows take you next?
  
  ### On the Edge
  
  ##### Stage: 3 Challenge Level:
  
  If you move the tiles around, can you make squares with different coloured edges?
  
  ### An Unusual Shape
  
  ##### Stage: 3 Challenge Level:
  
  Can you maximise the area available to a grazing goat?
  
  ### Trapezium Four
  
  ##### Stage: 4 Challenge Level:
  
  The diagonals of a trapezium divide it into four parts. Can you create a trapezium where three of those parts are equal in area?
  
  ### Children at Large
  
  ##### Stage: 3 Challenge Level:
  
  There are four children in a family, two girls, Kate and Sally, and two boys, Tom and Ben. How old are the children?
  
  ### Sissa's Reward
  
  ##### Stage: 3 Challenge Level:
  
  Sissa cleverly asked the King for a reward that sounded quite modest but turned out to be rather large...
  
  ### Mixing Paints
  
  ##### Stage: 3 Challenge Level:
  
  A decorator can buy pink paint from two manufacturers. What is the least number he would need of each type in order to produce different shades of pink.
  
  ### Counting Factors
  
  ##### Stage: 3 Challenge Level:
  
  Is there an efficient way to work out how many factors a large number has?
  
  ### Difference Sudoku
  
  ##### Stage: 4 Challenge Level:
  
  Use the differences to find the solution to this Sudoku.
  
  ### Consecutive Seven
  
  ##### Stage: 3 Challenge Level:
  
  Can you arrange these numbers into 7 subsets, each of three numbers, so that when the numbers in each are added together, they make seven consecutive numbers?
  
  ### Make 37
  
  ##### Stage: 2 and 3 Challenge Level:
  
  Four bags contain a large number of 1s, 3s, 5s and 7s. Pick any ten numbers from the bags above so that their total is 37.
  
  ### Mixing More Paints
  
  ##### Stage: 3 Challenge Level:
  
  Is it always possible to combine two paints made up in the ratios 1:x and 1:y and turn them into paint made up in the ratio a:b ? Can you find an efficent way of doing this?
  
  ### Rule of Three
  
  ##### Stage: 3 Challenge Level:
  
  If it takes four men one day to build a wall, how long does it take 60,000 men to build a similar wall?
  
  ### Dozens
  
  ##### Stage: 2 and 3 Challenge Level:
  
  Do you know a quick way to check if a number is a multiple of two? How about three, four or six?