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Spacecraft AR
Explore the solar system in your own classroom with this educational app from NASA's Jet Propulsion Laboratory. Watch space explorers in augmented reality on your mobile device.
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Corners in a quadrilateral
Sum of the four angles in a quadrilateral is 360 degrees. Calculate the size of an angle, based on three given angles.
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Interactive exerciseNewTeacher -
Problems with percentages: Exercise
Problems with percentages about profit, discount, increase and decrease.
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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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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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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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Interactive exerciseNewTeacher