Posts by: toni
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
Copy and fill in the contingency table and the Venn diagram below and use them to answer the questions.
1a. Put in 20
b. […]
If you have not already done it click these links to try the Collapsible Cube activity and watch the video.
Make a tetrahedron out of rolled paper sticks. Press it gently.
See that it does not change its shape – it is rigid.
3 squares North,
then diagonally 1 South East,
2 squares North East,
2 squares South,
1 square South West,
4 squares East
then 4 squares south.
Where does he go to and what does he meet on his journey?
Using the 8 compass directions describe a route for Pirate […]
We have six cards, four Aces and the Jack of hearts and Queen of spades in an envelope or bag. You pick 2 cards at random and tell me “I have an Ace”. What is the probability that you have two aces?
Next suppose I pick 2 of the 6 cards at […]
Make a 3D cube out of rolled paper sticks, tied together at the ends. Push your cube gently down and sideways. It will collapse into a 2D shape. Can you collapse your cube into
a 2D rectangle made of 2 squares?
Can you fold […]
Cut out pieces of paper or card to make counters or use stones or any small objects that are all different.
How many different ways can you arrange 3 coloured counters in a row?
Record each arrangement.
Now try 4 counters.
What about […]
Make 6 paper sticks, all the same length, by tightly rolling a piece of paper around a piece of string and securing it with sticky tape. If you have not made paper sticks before see the video: https://youtu.be/iaJ6EitIGKU
Here are some pictures of 3D shapes made from cubes and drawings of two of the shapes on dotty paper. Can you make these shapes yourself?
The right angled triangles numbered 1, 2, 3 and 4 in the diagrams all have sides of length a, b and c. They are identical (congruent) copies of each other.
Cut 4 congruent right angled triangles from some scrap paper. Arrange them as shown in diagram […]
Look at this square divided into four pieces : two identical triangles and two identical trapezia.
The edge of length 3 from each triangle matches with the edge of length 3 from a trapezium so that the four pieces from the square now occupy a rectangular space.
The square had side length 8 […]
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