Twenty per cent of the inhabitants of a city have been inoculated against a certain disease. An epidemic hits the city and the chance of infection amongst those inoculated is 10% but amongst the rest it is 75%.
Copy and fill in the contingency table and the Venn diagram below and use them to answer […]
Suppose you throw a double one. On the next throw, is your chance of throwing a double one the same, more likely or less […]
Next suppose I pick 2 of the 6 cards at […]
GAMES FOR A GROUP OR CLASS OF ANY SIZE
See the Home Learning Guide to find the best game for your group. All the games are played in a similar way but with variations of scoring systems.
PLAY FOR FUN – THINK AND WIN – PLAY AND LEARN
The game can easily be adapted to 2-digit or 3-digit numbers or […]
Najwa and Zuki play a game.
They put two red and four blue ribbons in a box. They pull out two ribbons at the same time without looking at the colours.
Najwa wins if both ribbons are the same colour.
Zuki wins if the two ribbons are different colours.
You could play the […]
For scissors hold out 2 fingers like a pair of scissors.
For paper hold your hand out flat.
For rock clench your hand into a fist.
Count 1 , 2, 3 and then, at the same time, both players make one of the signs: scissors, or paper or […]
Mathematical modelling and making real life connections is the focus of this guide. The use of tree diagrams in probability is developed starting with collecting data to model the numbers of boys and girls in families and the orders in which they occur. The connections between the underlying mathematics in these situatons, […]
Mzo picks one marble from each bag at random.
What is the probability he picks one of each colour? What is the probability he does NOT pick a […]
Eight of the envelopes each contain 5 blue and 3 red sheets of paper.
The other 12 envelopes each contain 6 blue and 2 red sheets of paper.
You choose one envelope at random. Then you choose a sheet of paper from it at […]