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Glass items are an integral part of everyday life. But how are they made?
This video presents how to calculate the golden ratio.
Did you know that the natural gas you use for heating may have been under the ground just two hours before?
Sergey Brin and Larry Page founded a company that has mesmerised the world with its innovative ideas.
It is an early architectural style characterised by thick walls and narrow windows.
By bisecting a straight angle (180°), we get a right angle (90°). We get a 45° angle by bisecting that again.
A video about the mammals living in the cold climate zones of the Earth, like the polar bear, seals and penguins.
To plot a 60° angle, we refer you back to the plotting of an equilateral triangle.
There are many uses of equatorial aloe species. Beverages and medications are produced from its juicy leaves.
The dog and the rabbit had such a bad quarrel while chopping down trees they have been angry with each other ever since.
Having eaten his delicious chicken, the fox yearned for some grapes, but he was unable to reach the bunches up high.
By using a compass, we can orientate ourselves during a school trip or a hike in the woods.
In this experiment we prove that the volume of a cylinder is three times the volume of a cone.
Calculating the height of a classic water tower with a tape measure and lots of sunshine.
The recording shows a more than 2000-year-old gilded sarcophagus. You can see the names of the deceased and his protecting gods on the coffin.
Watch this video to learn how a cinema projector works and how a film appears on the screen.
Line e is given. Let’s plot a line parallel to line e 2 cm away.
Axis t and point P are given. Let’s plot the mirror image (point P’) of point P across axis t.
We produce carbon dioxide with sodium hydrogen carbonate and citric acid. It is a skyrocketing success!
We prepare a special “elephant toothpaste” with some hydrogen peroxide, liquid soap and food colouring.
Line e is given. Plot point P at a distance of 2 cm from line e.