Category Archives: Mathematics

Unit 3: Equations – Solutions

Unit 3 : Solutions (in Spanish)

Decimal numbers and fractions exercises

Solutions of the exercises about decimal numbers and fractions:


Calculator Casio Classwiz 991

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PISA 2018: Programme for International Student Assessment

Mathematical performance, for PISA, measures the mathematical literacy of a 15 year-old to formulate, employ and interpret mathematics in a variety of contexts to describe, predict and explain phenomena, recognising the role that mathematics plays in the world.

Check the latest Spanish tests here:

Mathematics (PISA)

Olimpiada Matemática de Albacete

Download  the problems and do at least four of them: (Deadline March, 22nd)

1st and 2nd ESO

3rd and 4th ESO

Nets of Platonic Solids

Download the nets of Platonic Solids

Platonic Solids (PDF)

Introduction to trigonometry

Trigonometry is the study of the properties of triangles. Why is it important? It’s used in measuring precise distances, particularly in industries like satellite systems and sciences like astronomy. It’s not only space, however. Trig is present in architecture and music, too. Now you may wonder…how is knowing the measurement and properties of triangles relevant to music?? THAT is a great question. Maybe you’ll learn the answer from us in these tutorials!

10 Most important numbers in the World

Where do math symbols come from?

Math is full of symbols: lines, dots, arrows, English letters, Greek letters, superscripts, subscripts … it can look like an illegible jumble. Where did all of these symbols come from? John David Walters shares the origins of mathematical symbols, and illuminates why they’re still so important in the field today.

Review. Solved exercises.

Solved exercises

Math 3rd ESO