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Properties of determinants: Overview
Overview of the properties of determinants of matrices:
- determinant of the transposed matrix;
- determinant when changing rows;
- determinant by product of a sequence with a real number;
- determinant when taking the sum of one row with a multiple …
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Geometric concepts: Visual representation
Visual representation of various geometric concepts:
- horizontal, vertical, diagonal;
- perpendicular, parallel, intersecting;
- distance, width, length;
- curved line, broken line, straight line;
- right angle, acute angle, obtuse angle, straight angle; …
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Numerical Mathematics with Python: Python Programs and Manual
This manual covers a large number of computer programs written in Python that replace manual calculations in numerical mathematics. Here you will find a wide range of mathematical applications within numerical mathematics. A Python program …
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CHEMzine: Downloadable magazine
The zines were created by polymer chemist Alex Cook. The following themes are available:
- atoms,
- bonds and structure,
- matter,
- thermodynamics and reaction rate,
- organic chemistry,
- polymers,
- DNA and RNA,
- proteins.
Do you want to do an English experiment …
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Climate Detectives: Become a climate detective and make a difference
This project was made possible by ESA. It challenges students to make a difference in understanding and protecting the Earth's climate. Students go through three phases.
- In phase 1 they look for a local climate problem. They formulate a research …
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Convert line scale to fraction scale: Exercises
Digital exercises made in Excel on converting a line scale to a fractional scale.
Practice numbers adjust themselves when the document is reopened.
This gives you a large number of different exercise series.
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Resource City of Urban Mine: Resources in your own city
Worldwide, we face the great challenge of meeting the ever-growing demand for
to track raw materials. You usually find them underground and mining
we through mines. But it is becoming more and more interesting to live in our own cities
to do …Translated by
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Units of Measure: Conversion Exercises
Exercises on reductions in length and volume measures and weights.
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Stoichiometry: Course
Chemical calculation course with descending reactions (stoichiometric problems).
The quantity of substance (with mole as unit) is the pivot of the calculations.
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Jump grid: Tool for times and division tables
Tool for students who have difficulty automating the times tables.
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Reducing length measurements: Practice sheet
An exercise in converting measures of length (km, hm, dam, m, dm, cm, mm).
Decimal numbers are also discussed.
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Operations with natural numbers: Problems
A chain of arrows that can be used to practice solving problems.
The emphasis is on writing down the edit.
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