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| Demonstration Pages for both JuniorMathsOnline and SeniorMathsOnline |
JuniorMathsOnline
- Percentages - example of notes with interactive tutorials.
- Transformations - animations of the common transformations of reflections, rotation, translation and enlargement.
- Vectors - notes including a simulation and a game.
- Trigonometry - simulation showing the sine as a circular function.
- Solid Shapes - pop-up windows describing various shapes.
- Algebra Crossnumber - learning algebra through crosswords.
- Expressions Test - one of the 355 multiple-choice topic tests.
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SeniorMathsOnline
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For a full list of each year's topics click the appropriate link below:
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Solid Objects
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The following solids are frequently
seen and used.
Double click each diagram for more
information.
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Cube
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Cuboid
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Triangular Prism
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Rectangular Pyramid
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Triangular Pyramid
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Cone
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Cylinder
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Sphere
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Properties of Solids
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Solids are three dimensional (3D)
objects which have length, width and height.
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A solid has faces, edges and vertices.
(If an edge is hidden from view a dotted line or dashes are used.)
The cuboid shown has:
- 6 faces
- 8 vertices
- 12 edges
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| A prism is a solid with the same cross
section or shape for all of its length |
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| A pyramid has a base which can be any
shape and the corners of the base taper to a point called the apex.
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base
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Platonic Solids
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A Platonic solid is a regular
polyhedron.
A regular polyhedron is a
solid in which all of the faces are the same shape and all the
edges are the same length.
The Platoninc solids were
named after the Greek philosopher, Plato.
There are only 5 Platonic
solids. These are shown in the diagram on the right.
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The Platonic Solids
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Shape
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tetrahedron
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4 faces - each a triangle
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cube
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6 faces - each a square
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octahedron
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8 faces - each a triangle
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dodecahedron
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12 faces - each a pentagon
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icosahedron
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20 faces - each a triangle
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