Posts by: toni
This United Nations Children’s Fund pie chart shows the global locations of 783 million people who did not have safe drinking water in 2012 and this number is increasing.
The total world population in 2017 is 7.5 billion (7,500,000,000). What percentage of the world population is without safe drinking water?
The world […]
Discuss these charts. The first was published in August 2020, and is similar to Florence Nightingale’s 1885 pie charts. In both charts the radial distance gives the number of deaths for a year and both were produced to convey a health warning and send messages to the British Government. What do you think these messages […]
Xolile sells ice cream and the pie chart shows the sales for last week.
What fraction of the ice creams sold were strawberry? If she sold 60 strawberry ice creams how many ice creams were sold altogether.
The number of vanilla ice creams and the number of chocolate ice creams sold were the same.
[…]
A regular polygon has all its angles equal and all edge lengths equal. In a regular polyhedron all the faces are congruent regular polygons and the same number of polygons meet at each vertex.
Each regular polyhedron has its own codename. The tetrahedron is 333, the octahedron is 3333, the icosahedron is […]
Some arrangements of six squares form the net of a cube, others do not. Explain why the two shaded arrangements are nets of cubes and the two unshaded arrangements are not.
Draw this net and make your own cube.
How many faces, edges and vertices does a cube have?
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Do you prefer the game if you change the rules so you only have to reach +13 or -13 to win, and it’s OK to overshoot? Why?
In the TUG MUCH HARDER GAME you can add, subtract, multiply or divide the 2 scores (in either order). […]
A square of paper 8 cm by 8 cm is folded so that the corner P coincides with the midpoint of an opposite edge as shown in the diagram.
Investigate the three triangles (where there is a single thickness of the paper) that are formed by folding in this way.
Click here for […]
Find all the angles in the diagram and mark each set of equal angles in a colour for that set.
Let AE = 1 unit and BE = x units.
Which triangles are isosceles?
Which triangles are similar?
Use similar triangles to give an equation for x […]
Fibonacci (in the year 1202) investigated a problem about how fast a population of rabbits would grow in the following circumstances, starting with just one pair of rabbits:
Suppose a newly-born pair of rabbits, one male, one female, are put in a field. Rabbits are able to mate at the age of […]
In sheep talk the only letters used are B and A.
Sequences of words are formed as follows:
The first word only contains the single letter A.
To get the next word in the sequence change each A in the previous word into B and each B in the previous word […]
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