Pyrimidine (C₄H₄N₂)

A heterocyclic organic compound, its derivatives are thymine, cytosine and uracil.

Volume of spheres (demonstration)

The sum of the volume of the ´tetrahedrons´ gives an approximation of the volume of the...

Cuboid (exercises)

Edges, diagonals and faces of a cuboid can be identified by its vertices.

Net of a cube (exercises)

Not all nets consisting of 6 congruent squares are foldable into cubes.

Battle of Muhi (11–12 April 1241)

The devastating defeat of the Hungarians in the battle against the Mongolians was the...

Molecule exercise VI (Carbohydrates)

An exercise about the groups and structure of mono-, di- and polysaccharides.

Labour camp in Hungary (Recsk)

About 1,500 people were taken to the labour camp also known as ‘the Hungarian Gulag’...

Clothing (Western Europe,1960s)

Clothing reflects the lifestyle and culture of the region's inhabitants.

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