This is a short list of 20 of the interactivities I have produced. I work on new interactivities every week.
But this list no longer gets updated. If you want to see the
latest collections of my work, visit my Mathematical
Interactivities or join the Interactivities
Forum to learn how to make your own interactive
educational multimedia resources.
 Mathematical
Matches  A series of flashcard/concentration puzzles 
sometimes with an added interactive twist. Covers a range of
mathematical topics.
 Amazing Age Cards  How does the
computer know which number you've picked?
 Famous Mindreading Card Trick  How can
the computer work out which one of 27 cards you're thinking about?
 The Frog Puzzle  Click on the lily pads to make the frogs move
across the pond by hopping or sliding. Can you work out how
many moves you would need to shift any number of frogs?
 HighLow  How many tries do you need to guess a number between 1
and 999?
 TimeLord  A blast of nostalgia for
devotees of old computer games. Move the TimeLord around to avoid
being exterminated.
 Bomb Numbers  The
old bomber arcade game  updated into a mathematics drill. Drop
bombs on skyscrapers to answer multiplication table questions.
 Multiplication Tables  Want to learn any number's times table?
Also available as an asp script or a spreadsheet...
 100
Square  investigate patterns made by multiples of numbers in a
100 square. If that's too easy, try the nsquare
investigation
 Subtractor  An interactive doodle that plays with the
concept that multiplication is repeated addition and division is
really repeated subtraction.
 Number Cruncher  Use the arrow keys to guide the number
cruncher around the screen, collecting multiples as you move.
 Percentage estimation  try to
estimate what percentage of the bar has been shaded. Score 3 marks
for being spot on. 2 for a very close answer, 1 for a fairly close
answer.
 Sectors  what fraction of a circle
has been shaded? Answer in lowest terms!
 Flash Algebra  is it an algebra lesson about Flash, or a Flash
lesson on algebra?
 Think of a Number  interactive discussion starter.
 Shape Game  Use the mouse to
click on the shapes and move them to the right container, but avoid
being caught by the other robots.
 Two dice
bar chart  draws a bar chart to show the result of rolling two
dice 150 times:
 How likely?
 If the probability of an event is 0.5, how likely would 12
successes out of 20 trials be? Use this interactivity to find the
answer to this and other questions.
 Marbles
 simulates an experiment where you remove red, green and blue
marbles with or without replacement
 Combinations  How many different cars,
football strips or ice creams can you create?
