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Introduction to the story of Anne Frank and the Second World War

Anne’s life is turned upside down when the war begins, and she has to go into hiding in the Secret Annex. This lesson introduces ...

Along this resource you will work on plants, the different parts of them, the pollination and the photosynthesys as important process for plant life. We are going to review some English contents like ...

This resource, created by Javier Ramos Sancha, will help the students to learn about the cells, the organization of the living things and how the different systems of the body work through a project b ...

Identify proportions by cross multiplying or simplifying ratios.

It is an educational content of CK-12 Foundation (to access some of the CK-12 contents you must be logged in).

Every great story has a strong foundation—the story structure. Structure helps storytellers answer the critical question: what do I want my audience to know and when?

In the newest Khan Academy ...

The sum of two fractions with equal denominators is a new fraction with the same denominator and the numerator with the sum of the numerators. To subtract fractions we proceed in the same way: keep th ...

You'll learn the basic notions about the circumference.

At the end of the theorical explanation, you can practice or create 5 exercises to master this subject.

Definition and basic elements of a cir ...

You'll learn how to identify the set of natural numbers.

At the end of the theorical explanation, you can practice or create 5 exercises to master this subject.

The set of the natural numbers, order ...

You'll learn the basic definitions of set theory to work after the Algebra of sets.

At the end of the theorical explanation, you can practice or create 5 exercises to master this subject.

Definition ...

You'll learn to calculate determinants of any order, some of its most important propierties and how to calculate a adjoint matrix.

General method for the calculation of determinants is a didactic c ...