This site is maintained by Henry Welman, former provincial manager (2017-2022) and subject adviser (2001-2016) for physical and technical sciences in the Free State, South Africa. Currently retired, but interested in the well-being of teachers and learners involved in these subjects. Please read the disclaimer at the bottom of the posts.
Wednesday, 31 March 2021
Diagnostic Reports: NSC Examinations of November 2020
Tuesday, 23 March 2021
Measurement of Curriculum Coverage
Friday, 5 March 2021
Examination Timetable: Grade 12 Senior Certificate & National Senior Certificate May/June 2021
The timetable is available. Click here to download.
Tuesday, 16 February 2021
PAT for Technical Sciences: Grade 12 in 2021
Thursday, 11 February 2021
Free State Assessment Guidelines 2021
Tuesday, 9 February 2021
Amended School Calendar for 2021
Thursday, 21 January 2021
Help yourself to reduce loss of learning time
Here is a golden opportunity for all learners and teachers! We are so proud to have Dr Angela Stott as part of our teaching force here in the Free State. Apart from doing research on critical matters in Physical Science education, she is an excellent teacher with a wonderful reservoir of resources.
She extends the following invitation to learners and teachers, which you should not miss:
"Hello! To help reduce loss of learning time, I've made a lot of my Science resources available for free. Please help me to make people aware of these resources by sharing this message to teachers, parents, grandparents and learners (Grade 8&9 NS and Grade 10-12 PS).
While school opening has been delayed, why not get your learners / kids / yourself started on the curriculum at home?... To help you...
Check out my renamed and overhauled website: www.learnscience.co.za
Note two new features, as mentioned in this promo:
- Movies on every CAPS topic for Gr 8&9 NS and Gr 10-12 PS
- Quiz competitions per grade. First set of competitions' deadline is 28 Feb.
Teachers, perhaps you could set your learners the task of completing the quiz competition - which would also require them to study the topic, e.g. by watching the associated movies - while we wait for the new term to start?
Learners, why not participate in these quiz competitions to get a head-start while you wait for schools to open?
Best wishes!
Angela Stott (Dr)"
LearnScience.Co.Za
https://youtu.be/C6zNxB-ChA0
Wednesday, 20 January 2021
How far have the manholes travelled by now?
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| ©Reuters: A cameraman films an atomic mushroom cloud during Operation Plumbbob; 19 July 1957 |
Keith Anderson wrote further: "When the US started doing underground nuclear testing, nobody really knew what would happen. One test bomb was placed at the bottom of a 485-foot deep shaft on July 26, 1957, and someone thought it was a good idea to put a half-ton iron manhole cover on top to contain the explosion. The bomb turned the shaft into the world's largest Roman candle, and the manhole cover was nowhere to be found. Robert Brownlee, an astrophysicist who designed the test, wanted to repeat the experiment with high-speed cameras so he could figure out what happened to the cover. So, another experiment was created, this time 500-feet deep, and a similar half-ton manhole cover was placed on top. On August 27, 1957, they detonated the bomb. The high-speed cameras barely caught a view of the cover as it left the top of the shaft and headed into oblivion. Brownlee used the frames to calculate the speed to be more than 125,000 miles per hour; more than five times the escape velocity of the earth, and the fastest man-made object in history."
Physicists have debated the whereabouts of the two manhole covers ever since. Recently, with the help of supercomputers and a lot more scientific knowledge, physicists are certain that they wouldn't have had time to burn up completely before exiting the atmosphere. This means both of the remaining pieces would have passed Pluto's orbit sometime around 1961 and are way beyond the edge of the solar system by now.
You can read two further articles, with beautiful pictures, from MailOnline and BusinessInsider about these amazing phenomena. I have made pdf files of the articles. Click here for article one, and here for article two.
For those who want to know more. The escape speed for Earth is 11,3 kilometre per second. At that speed, one can cover the straight distance between Pretoria and Cape Town (if we take it at 1 315 km) in 116 seconds, or about two minutes. Makes one think about this amazing universe and the achievements of science!
Saturday, 2 January 2021
The SS Warrimoo: The ship that simultaneously spanned four different hemispheres and two centuries
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| Image: https://www.snopes.com |
On 31 December 1899, it crossed the equator and the international date line. This sparked a few amazing facts! Read the original article here or download a pdf version here.
Thursday, 31 December 2020
New Year 2021
Thursday, 24 December 2020
Sunday, 20 December 2020
The 'Great' Conjunction of Jupiter and Saturn
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| (C) NASA / Bill Ingalls |
The previous time Jupiter and Saturn were so close was in 1623, only 14 years after Galileo built his first telescope. In the Southern Hemisphere, the 21st of December is also the shortest night.
Video 1
Video 2
Video 3
Tuesday, 15 December 2020
Recovery ATPs for 2021
The Department of Basic Education released these documents middle December 2020. They are available on the Covid-19 page. Click here to go there. Teachers may want to familiarise themselves with the documents. They will be discussed and explained during the first series of start-up meetings in 2021.
Wednesday, 25 November 2020
Let's start looking at the future
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(C) https://www.needpix.com/photo/1294077/ |
From 2021 teachers and learners will have the extra responsibility to catch up on crucial grade 10 and 11 topics that were not taught in 2020 due to Covid-19.
From the side of the FSDoE, we will also collect information on outstanding grade 10 and 11 topics. In due course, look out for links to complete online forms concerning this.
Sunday, 22 November 2020
Best wishes for the final grade 12 exams in Physical and Technical Sciences!
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| (C) https://pixabay.com/users/mohamed_hassan-5229782 |
With today's question papers, the grade 12 learners of 2020 have completed their Physical and Technical Sciences. We hope you have enjoyed the journey through a small part of Physics and Chemistry.
Friday, 20 November 2020
Examination time 2020
Best wishes to all learners. Your teachers have spent countless hours to help you, but when you sit for the examinations, it will be only you. Your effort! Your input! Therefore, it is worth the while to prepare as best as possible. Remember that your best is enough. Don't get too worked up because of the examinations.
IBP broadcasts of the University of the Free State
The second round of exam preparation broadcasts for grade 12 are in November. The YouTube links for paper one, and the broadcast slots for paper two are given below:
Technical Sciences Paper 1: Click here
Physical Sciences Paper 1 Part 1: Click here
Physical Sciences Paper 1 Part 2: Click here
Physical Sciences Paper 2: Click here
Developmental/Revision lessons for grade 11 are in November. The YouTube links for electrostatics and the broadcast slots for electric circuits are given below:
Electrostatics Part 1: Click here
The first round of grade 12 exam preparation broadcasts took place in October. They can be accessed with the following YouTube links:
Physical Sciences Paper 1 Part 1: Click here
Physical Sciences Paper 2: Click here
Technical Sciences Paper 1: Click here
Technical Sciences Paper 2: Click here
Saturday, 14 November 2020
New norms for Continued Professional Teacher Development (CPTD)
Teachers - take note!
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| (C) https://www.needpix.com |
The COVID-19 pandemic has necessitated new ways through which teachers can engage in professional development. Due to this, SACE has amended the CPTD point scheme to accommodate professional development activities via virtual meetings, engaging in electronic media, online activities, etc. Click here for circular LTA 5 of 2020 for more information.
Thursday, 15 October 2020
Science Convention 2021
However, we are planning to go ahead full steam to have our usual Physical Science Olympiads for grades 11 and 12 learners in 2021, from which the learners and teachers will be chosen to attend the convention at the North West University.
The staff at NWU are passionate about their research and subject matter. Hence, follow the links below to get information about the faculties normally involved in the convention. The NWU is serious about the development of young people. Feel free to share this information with learners to encourage their interest in the fields. It will also empower them to make an informed decision about their studies and a satisfying career in the Natural Sciences.
Click below for more information about the following faculties at NWU:
Engineering
Talis 2018: South Africa Country Report
Interesting reading stuff about teachers and principals as lifelong learners.
Click here to access the document.












