Other tags that relate to Birthday Cakes
Addition & subtraction. Games. Factors and multiples. Place value. Investigations. Comparing and Ordering numbers. Counting. Odd and even numbers. Selecting and using information. Working systematically.There are 121 results
Broad Topics > Physical and Digital Manipulatives > Interactivities
Carroll Diagrams
Age 5 to 11 Challenge Level:
Use the interactivities to fill in these Carroll diagrams. How do you know where to place the numbers?
Light the Lights
Age 5 to 7 Challenge Level:
Investigate which numbers make these lights come on. What is the smallest number you can find that lights up all the lights?
Seven Flipped
Age 7 to 11 Challenge Level:
Investigate the smallest number of moves it takes to turn these mats upside-down if you can only turn exactly three at a time.
One to Fifteen
Age 7 to 11 Challenge Level:
Can you put the numbers from 1 to 15 on the circles so that no consecutive numbers lie anywhere along a continuous straight line?
Arrangements
Age 7 to 11 Challenge Level:
Is it possible to place 2 counters on the 3 by 3 grid so that there is an even number of counters in every row and every column? How about if you have 3 counters or 4 counters or....?
Dominoes Environment
Age 5 to 11 Challenge Level:
These interactive dominoes can be dragged around the screen.
Multiplication Square Jigsaw
Age 7 to 11 Challenge Level:
Can you complete this jigsaw of the multiplication square?
Colour in the Square
Age 7 to 16 Challenge Level:
Can you put the 25 coloured tiles into the 5 x 5 square so that no column, no row and no diagonal line have tiles of the same colour in them?
Find the Difference
Age 5 to 7 Challenge Level:
Place the numbers 1 to 6 in the circles so that each number is the difference between the two numbers just below it.
Red Even
Age 7 to 11 Challenge Level:
You have 4 red and 5 blue counters. How many ways can they be placed on a 3 by 3 grid so that all the rows columns and diagonals have an even number of red counters?
Same Length Trains
Age 5 to 7 Challenge Level:
How many trains can you make which are the same length as Matt's and Katie's, using rods that are identical?
Calculator Bingo
Age 7 to 11 Challenge Level:
A game to be played against the computer, or in groups. Pick a 7-digit number. A random digit is generated. What must you subract to remove the digit from your number? the first to zero wins.
Beads
Age 7 to 11 Challenge Level:
Three beads are threaded on a circular wire and are coloured either red or blue. Can you find all four different combinations?
Three Ball Line Up
Age 5 to 7 Challenge Level:
Use the interactivity to help get a feel for this problem and to find out all the possible ways the balls could land.
Domino Numbers
Age 7 to 11 Challenge Level:
Can you see why 2 by 2 could be 5? Can you predict what 2 by 10 will be?
Cuisenaire Counting
Age 5 to 7 Challenge Level:
Here are some rods that are different colours. How could I make a yellow rod using white and red rods?
Part the Piles
Age 7 to 11 Challenge Level:
Try to stop your opponent from being able to split the piles of counters into unequal numbers. Can you find a strategy?
Making Shapes
Age 5 to 7 Challenge Level:
Arrange any number of counters from these 18 on the grid to make a rectangle. What numbers of counters make rectangles? How many different rectangles can you make with each number of counters?
Teddy Town
Age 5 to 14 Challenge Level:
There are nine teddies in Teddy Town - three red, three blue and three yellow. There are also nine houses, three of each colour. Can you put them on the map of Teddy Town according to the rules?
Triangle Edges
Age 5 to 7 Challenge Level:
How many triangles can you make using sticks that are 3cm, 4cm and 5cm long?
Tessellate the Triominoes
Age 5 to 7 Challenge Level:
What happens when you try and fit the triomino pieces into these two grids?
Times Tables Shifts
Age 7 to 11 Challenge Level:
In this activity, the computer chooses a times table and shifts it. Can you work out the table and the shift each time?
Stop the Clock
Age 5 to 7 Challenge Level:
This is a game for two players. Can you find out how to be the first to get to 12 o'clock?
Multiples Grid
Age 7 to 11 Challenge Level:
What do the numbers shaded in blue on this hundred square have in common? What do you notice about the pink numbers? How about the shaded numbers in the other squares?
All Change
Age 5 to 7 Challenge Level:
There are three versions of this challenge. The idea is to change the colour of all the spots on the grid. Can you do it in fewer throws of the dice?
Code Breaker
Age 7 to 11 Challenge Level:
This problem is based on a code using two different prime numbers less than 10. You'll need to multiply them together and shift the alphabet forwards by the result. Can you decipher the code?
Junior Frogs
Age 5 to 11 Challenge Level:
Have a go at this well-known challenge. Can you swap the frogs and toads in as few slides and jumps as possible?
Winning the Lottery
Age 7 to 11 Challenge Level:
Try out the lottery that is played in a far-away land. What is the chance of winning?
Stop the Clock for Two
Age 5 to 7 Challenge Level:
Stop the Clock game for an adult and child. How can you make sure you always win this game?
Scissors, Paper, Rock
Age 5 to 7 Challenge Level:
Play this well-known game against the computer where each player is equally likely to choose scissors, paper or rock. Why not try the variations too?
Online
Age 7 to 11 Challenge Level:
A game for 2 players that can be played online. Players take it in turns to select a word from the 9 words given. The aim is to select all the occurrences of the same letter.
One Million to Seven
Age 7 to 11 Challenge Level:
Start by putting one million (1 000 000) into the display of your calculator. Can you reduce this to 7 using just the 7 key and add, subtract, multiply, divide and equals as many times as you like?
Counter Roundup
Age 7 to 11 Challenge Level:
A game for 1 or 2 people. Use the interactive version, or play with friends. Try to round up as many counters as possible.
Colour Wheels
Age 7 to 11 Challenge Level:
Imagine a wheel with different markings painted on it at regular intervals. Can you predict the colour of the 18th mark? The 100th mark?
Chocolate Bars
Age 7 to 11 Challenge Level:
An interactive game to be played on your own or with friends. Imagine you are having a party. Each person takes it in turns to stand behind the chair where they will get the most chocolate.
Fifteen
Age 7 to 14 Challenge Level:
Can you spot the similarities between this game and other games you know? The aim is to choose 3 numbers that total 15.
Ladybird Box
Age 5 to 11 Challenge Level:
Place six toy ladybirds into the box so that there are two ladybirds in every column and every row.
Board Block for Two
Age 5 to 7 Challenge Level:
Board Block game for two. Can you stop your partner from being able to make a shape on the board?
Fractions and Coins Game
Age 7 to 11 Challenge Level:
Calculate the fractional amounts of money to match pairs of cards with the same value.
Rabbit Run
Age 7 to 11 Challenge Level:
Ahmed has some wooden planks to use for three sides of a rabbit run against the shed. What quadrilaterals would he be able to make with the planks of different lengths?
Two and One
Age 5 to 7 Challenge Level:
Terry and Ali are playing a game with three balls. Is it fair that Terry wins when the middle ball is red?
Odds or Sixes?
Age 7 to 11 Challenge Level:
Use the interactivity or play this dice game yourself. How could you make it fair?
Train Tactics for Two
Age 7 to 11 Challenge Level:
Train game for an adult and child. Who will be the first to make the train?
100 Percent
Age 7 to 11 Challenge Level:
An interactive game for 1 person. You are given a rectangle with 50 squares on it. Roll the dice to get a percentage between 2 and 100. How many squares is this? Keep going until you get 100. . . .
NRICH is part of the family of activities in the Millennium Mathematics Project.