Monthly Archive: July 2012
Lines and Quadrilaterals
This chapter explores lines and quadrilaterals. The objectives for this chapter are; Imagining and describing 2D shapes, Parallel and perpendicular lines, properties of rectangles and squares and properties of common quadrilaterals. No prior knowledge...
Square and Cubic Units
This chapter explores square and cubic units. The objectives of this chapter are; to be able to convert between different units of area and volume, and solve area, volume and capacity problems with mixed...
Trigonometry Missing Sides
This article explores the topic trigonometry missing sides. The objectives for this section are being able to use the sine, cosine and the tangent formulae to find the missing sides in a triangle. You...
Surface Areas of Complex Shapes
This chapter explores surface areas of complex shapes. The objectives of this chapter are being able to calculate the surface areas of pyramids, cones and spheres and simple combinations of these solids. No prior...
Trigonometry Missing Angles
This article explores trigonometry missing angles. This article explores how to use the formulae for sin, cos and tan to find the missing angles. Measuring angles Trigonometry helps us to calculate angles in shapes....
Sum of Angles in a Polygon
This chapter explores sum of angles in a polygon. The objectives of this chapter are; to be able to understand and use the formula for the sum of interior angles of a polygon with...
Multiplying decimals and Whole numbers
This chapter explores multiplying decimals and whole numbers. No prior knowledge is required for this chapter. Multiplying Suppose we wanted to multiply 6 x 0.8, that is;
Angles in parallel lines
This chapter explores angles in parallel lines. The objectives of this chapter are; to understand and be able to use alternate, supplementary and corresponding angles in parallel lines. What are parallel lines? Parallel lines...
Angle Proofs
This chapter explores understanding and proving angles. At the end of this chapter you should have good understanding and be able to prove that; ‘angles in a triangle add up to 180°‘, ‘angles in...