Articles by: elmarie

Good bye

Yes, the Bible talks about a time to go and that is where I am standing now! I want to thank the staff and learners of Silvermine Academy for allowing me to share two and a half years of my life with you.  It was great working with my fellow staff members and I will remember each one of you, just[Read More…]

by July 25, 2013 Physical Science
Circles

Circles

A circle is a simple shape of Euclidean Geometry that is the set of all points in a plane that are a given distance from a given point, the centre.  The distance between any of the points and the centre is called the radius. A circle is a simple closed curve which divides the plane into two regions: the interior[Read More…]

by July 18, 2013 Mathematics
Think about this:

Think about this:

Compare Mathematics to the act of running a race. We all can run – some faster than others.  We all did Maths up to Grade 9 (Std 7) at school – some attained better results than others. Most of us participated in races at the inter house athletics days (the exams you wrote) and some won, others came second, third,[Read More…]

by June 19, 2013 Mathematics
Rotation of an angle about the origin

Rotation of an angle about the origin

In the recent examinations the Grade 12 Mathematicians where confronted by the following question: This is the solution:  See, Mathematics is not just about senseless calculations!

by June 13, 2013 Mathematics
Friction

Friction

Frictional force is a resistance force between two surfaces that are in contact with each other.  Friction always opposes the relative motion between two surfaces.  In opposition to the normal force, that is perpendicular to the surface, the frictional force always works along or parallel to the surface but in the opposite direction to the objects motion.  There are two[Read More…]

by June 3, 2013 Physical Science
Examinations

Examinations

Is this you: or? Where do you fit in? The Grade 12 learners wrote Mathematics Paper 1 on Friday and some of them struggled with the last three Questions.   Let’s take a look at the answers:  Some advice:  And a little bit of humour: A final word of advice:  Read THREE times, Think TWICE and write ONCE! Good luck!!!

by May 27, 2013 Mathematics
Polymers

Polymers

Very large molecule are called macromolecules.  Organic macromolecules are made up of a large number of carbon and hydrogen atoms.  Organic macromolecules are often polymers that are made by linking a large number of simple molecules (monomers). Some organic macromolecules occur naturally in our bodies and in nature, and they form an important part of the structural and functional operations of[Read More…]

by May 22, 2013 Physical Science
Tranformation Geometry

Tranformation Geometry

Tranformation Geometry is the geometry of moving points and shapes.  The four types of transformation that we study in Mathematics are: Translation Reflection and Rotation Resizing A translation is a horizontal or vertical “slide” from one position to another.  The object does not change its shape or orientation. A reflection is a mirror image of a shape about a line of[Read More…]

by May 15, 2013 Mathematics
More Organic Chemistry!

More Organic Chemistry!

The Grade12’s completed their journey through Organic Chemistry and they discovered that the size of the hydro-carbon molecule plays a very important role in the density en boiling point of any organic compound. Here are some typical questions from previous examination papers: And here are some well structured answers: Enjoy!

by May 8, 2013 Physical Science
Functions!

Functions!

No, we are not party-ing!  A function is a relation between a set of inputs and a set of permissible outputs. Functions are “the central object of investigation”in most fields of modern mathematics.  There are many ways to describe or present functions.  Some functions may be defined by a formula that tells how to compute the output for a given input.  Others are given by[Read More…]

by May 1, 2013 Mathematics