Tulip growing

Let's watch how a tulip, widely considered to be the national flower of the Netherlands, develops from its bulb.

Plotting a 45° angle

By bisecting a straight angle (180°), we get a right angle (90°). We get a 45° angle by bisecting that again.

Measuring the height of a tower

Calculating the height of a classic water tower with a tape measure and lots of sunshine.

Animals of the polar regions

A video about the mammals living in the cold climate zones of the Earth, like the polar bear, seals and penguins.

Turbine powered by the heat of your hands

How to rotate a pinwheel and a spiral without touching them.

Growing daffodil

The daffodil is a beautiful flower of alpine pastures and meadows. Let's see how the plant develops.


There are many uses of equatorial aloe species. Beverages and medications are produced from its juicy leaves.


The largest terrestrial mammal of the temperate climate zones. There are two living species of bison: the American bison and the European bison.


One of the most common weeds. It can be found in fields and meadows.

Fig tree

This video is about the fig tree and its remarkable fruit. The fruit of the fig tree is in high demand for its various medicinal properties.

Since when has the dog been angry at the rabbit?

The dog and the rabbit had such a bad quarrel while chopping down trees they have been angry with each other ever since.

The fox and the grapes

Having eaten his delicious chicken, the fox yearned for some grapes, but he was unable to reach the bunches up high.

Orientation with a compass

By using a compass, we can orientate ourselves during a school trip or a hike in the woods.

Long-tailed mayfly

Mayflies or shadflies are insects whose larval stage usually lasts 1-3 years, which they spend in freshwater.

The Annual rings of trees

Tree's annual rings tell a great deal about their history. They help to determine their age, and preserve signs of air pollution, acid rain or even landslides.

Brownian motion

Brownian motion is the continuous random motion of particles mixed in a fluid, caused by their collision with the constantly moving molecules of the fluid.

In the park

Sometimes it feels nice just to have a stroll or relax under in the shades of the trees in a grove. It is important that we find time for relaxation.

Gated communities

These housing estates, enclosed by a fence or wall, are secure and provide many services in the interest of their residents, making property prices within...

Growing up

How does a child turn into an adult? What are the stages of development he goes through?

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