COVID-19: update

April 9, 2022

One of the most important indicators of the state of the pandemic globally is the number of people dying from COVID every day.

The daily number of confirmed COVID deaths is at its lowest level in over two years—the last time it was lower was 30 March 2020.

Learn more here.

Why Real Explosions Don’t Look Like Movie Explosions

March 11, 2021

Explosions on film are made to look good: fireballs and flame. In reality, though, they’re a bit disappointing. Here’s how Hollywood does it.

COVID-19: some data

March 27, 2020

There is much being written about COVID-19 and while I don’t plan to add to it, I have come across some excellent data sources on the spread and effects of this virus.

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The most well known is – Coronavirus COVID-19 Global Cases by the Center for Systems Science and Engineering (CSSE) at Johns Hopkins University (JHU) (here is an interview with the people creating this data too.)

Our World in Data is an astoundingly good website with enormous amounts of information and their Coronavirus Disease (COVID-19) – Statistics and Research page is no different (see also their testing data page).

Finally, being Australian, the Coronavirus (COVID-19) in Australia site is also of interest.

Hope the above are of interest.

2019 Best illusion of the Year Contest Winner

December 17, 2019

I really like optical illusions. And this is no exception …

The video above shows the top winner in the annual Illusion of the Year competition. It’s called the Dual Axis illusion by Frank Force. Is this shape spinning vertically or horizontally? You can’t tell, because it’s a 2D image, but your brain makes it seem one or the other, until visual cues help you change the orientation.

Light Speed – fast, but slow

October 11, 2019

Light travels at 299 792 458 m/s.

If you could travel at the speed of light, you could go around the Earth 7.5 times in one second. Which is fast, but…

A scientist captured an impossible photo of a single atom

October 8, 2019

Using an ordinary camera, with the help of long exposure, a laser, and two electrodes to suspend the atom in the air, a Scientist called David Nadlinger successfully took a photo of a single glowing strontium atom.

How awesome is that!


When illuminated by a laser of the right blue-violet colour, the atom absorbs and re-emits light particles sufficiently quickly for an ordinary camera to capture it in a long exposure photograph. Learn more here.

One of Australia’s 10 Most Influential Educational Leaders, 2019

August 29, 2019

The Knowledge Review recently announced Australia’s 10 Most Influential Educational Leaders (online magazine), 2019 … and it turns out I was one of them.

So that is cool!

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Read more here.

50 years since man landed on the moon

July 20, 2019

Apollo 11 was the spaceflight that first landed humans on the Moon. Commander Neil Armstrong, Lunar Module Pilot Buzz Aldrin, and Command Module Pilot Michael Collins formed the American crew that landed the Apollo Lunar Module Eagle on July 20, 1969.

Armstrong became the first person to step onto the lunar surface six hours 39 minutes later on July 21; Aldrin joined him 19 minutes later. They spent about two and a quarter hours together outside the spacecraft. Michael Collins was the only one of the three not to walk on the moon.

Check it out:

Have you ever wondered why Neil Armstrong was the first person to walk on the moon, not “Buzz” Aldrin. Find out here.

There are also heaps of archive movies on the NASA page here.

“That’s one small step for a man, one giant leap for mankind.”

NASA Charts 4,000 Exoplanets in One Map

July 15, 2019

In less than 30 years, humanity has discovered more than 4,000 exoplanets, and to celebrate the milestone, NASA created a map that puts that number into a more visual perspective.

Learn more here.

WORLD CLASS: How to build a 21st-century school system

June 16, 2019

World Class, written by Andreas Schleicher, is a fantastic book summarising huge amounts of research to help teachers, principals and policy makers improve the global education landscape.

The book can be read or downloaded as a PDF for free online here.

But, knowing that teachers are already busy people, I thought it might be useful to share a series of excerpts from the book that I found the most powerful and thought provoking.

As such, please click here to download my summary of WORLD CLASS.

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