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Cube: Unfolding
Development or unfolding of a cube based on various images.
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Polygon: Angles and sides
Find the adjacent and included angles or sides in a polygon.
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Astronomy: Speed of Light
This digital exercise will help you learn more about astronomy. While completing the multiple choice questions and fill-in exercises you will learn more about:
- measure the speed of light;
- Lorentz transformation;
- arcsecond;
- light-year sunrise; …
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Astronomy: Calendar
This digital exercise will help you learn more about astronomy. While completing the multiple choice questions and fill-in exercises you will learn more about:
- calculation day of the week;
- modular arithmetic;
- perpetual calendar;
- week number; …
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Angles in a triangle
Sum of the three angles in a triangle = 180 degrees.
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Types of triangles
Types of triangles:
- acute-angled,
- obtuse-angled,
- rectangular,
- isosceles,
- equilateral.
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Scale: Conversions
Scaled exercises: scaled distance compared to actual distance.
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Fraction of a number
Calculate the fractions of numbers (example: how much is 1/4 of 120?)
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Derive fraction from figure
The figures are divided into boxes and partly colored. The number of colored boxes must be expressed as a fraction.
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Division of fractions
Here you will find some basic exercises on dividing fractions.
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Transform improper fractions
This exercise requires you to convert improper fractions to whole numbers and basic fractions.
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Rounding a whole number
This exercise is about rounding a number to the nearest unit, ten, hundred and thousand.
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