Showing posts with label Electricity. Show all posts
Showing posts with label Electricity. Show all posts

Thursday, 3 July 2025

*Electrical circuits - the basics* *Elektriese stroombane - die basiese*

A simple way of how an electrical circuit (direct current) work.
Click here for the English version.

'n Eenvoudige manier oor hoe 'n elektriese stroombaan (gelykstroom) werk.
Klik hier vir die Afrikaanse weergawe.


English version
It is very important that learners have a good comprehension of the basic concepts of electrical circuits and can effectively apply the cognitive processes about the interaction between current, potential difference, resistance, energy and power. 

This piece is an attempt to make these challenges easier. It is a refined and adapted form of a method that I was introduced to in my first year as a teacher by my former subject advisor, Mr. Louis Maas. I would like to give credit to him for the initiative, as he has played a huge mentoring role in my life 40 years ago.

What I present here, I have used with great success in physical science; for both learners and later also during teacher training.

You are welcome to distribute this piece. I just request that it not be modified and that the copyright mark be distributed along with the piece. I hope this is of great use to you. Click here for access to the pdf document and to download it.

©Henry Welman (HFDW)

Afrikaanse weergawe
Dit is baie belangrik dat leerders die basiese begrippe van elektriese stroombane goed begryp en die kognitiewe prosesse van die interaksie tussen stroom, potensiaalverskil, weerstand, energie en drywing effektief kan toepas. 

Hierdie stuk is 'n poging om hierdie uitdagings makliker te maak. Dit is 'n verfynde en aangepaste vorm van 'n metode wat ek in my eerste jaar as onderwyser mee kennis gemaak het by my eertydse vakadviseur, meneer Louis Maas. Ek gee graag die eer aan hom vir die inisiatief, aangesien hy 40 jaar gelede 'n groot mentorsrol in my lewe gespeel het. 

Wat ek hier aanbied, het ek met groot sukses in fisiese wetenskap gebruik; vir beide leerders en later ook tydens onderwysersopleiding.

Jy is welkom om hierdie stuk te versprei. Ek versoek net dat dit nie aangepas word nie en dat die kopieregmerk saam met die stuk versprei word. Ek hoop dit is van groot nut vir jou. Klik hier vir toegang tot die pdf-dokument en om dit af te laai.

©Henry Welman (HFDW)

Thursday, 24 September 2015

Workshops by Dr Angela Stott on electric circuits

On 18 and 19 September teachers from math, science and technology (MST) schools in Lejweleputswa attended two days of training on electric circuits. Dr Angela Stott prepared the training material and presented the training. Each teacher received a kit with components to build electric circuits, supplemented by a laminated teacher guide and a set of answers.


The group after the price-giving
function on day two. Price winners

in the front row.

The workshop was an excellent example of inquiry based teaching and learning, and teachers got a very good example of the methodology of presenting electric circuits. A pre-test and post-test were written and prices were awarded to the winners.

We thank the following institutions and persons for making the workshop possible:

  • Free State Department of Education for the sponsorship.
  • Miss Janetta Nel, CES for Science and Technology, for the initial idea, administration and head office negotiations.
  • Messrs Henry Welman and Motseki Sefo, subject advisers in Lejweleputswa, for the local arrangements and communication with teachers.
  • Mr Pieter Swanepoel, principal of HTS Welkom, for providing a nice training venue at the school's hostel.
  • Mr Francois Crauwkamp, housemaster of the hostel, and his staff for preparing the venue and for the most delicious lunches and refreshments.
  • Dr Angela Stott for her energetic and motivating example of how a teacher should teach, for the quality of her training material and for the general support Free State physical science teachers get from her.

*** Enjoy pictures of the event. ***

Dr Angela Stott in action!


We are working ...





We are social ...






We are rewarded ...

*** General price winners ***








*** Top scorers in post-test ***

The top lady: Mrs L A Silinga of Rearabetswe
with Dr Stott

Top (joint 3rd place)
Dr Stott with Messrs MG Ntsane (Tikwana)
and TS Moremi (Mosala)
Bottom (joint 2nd place)

Dr Stott with Messrs RT Mokgothu (Concordia)
and LS Moeti (Mosala)

1st place: Mr TI Ketime (Leseding) with Dr Stott