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Do you remember the story of the tortoise and the hare? The tortoise and the hare decided to have a race. Everybody, most of all the hare, thought the hare would win the race because he hopped much fa ...

Sunspots are disturbed areas of the sun that look like spots because they are cooler than the surface of the sun. They have been observed and recorded since the 18th Century. This large collection of ...

Presents topics including number sense, variable expressions, statistics, decimals (including addition, subtraction, multiplication, and division), fractions, ratios, proportions, percents, geometric ...

CK-12 Foundation’s Algebra II with Trigonometry Concepts is a collection of concepts that expands on the algebraic topics of functions, equations, and graphs for high-school students.

It is an ed ...

CK-12 Foundation’s Algebra II with Trigonometry FlexBook® textbook is an expansion on the algebraic topics of functions, equations, and graphs for high-school students.

It is an educational content of ...

CK-12 Foundation’s Algebra I Concepts - Honors is a high-level complete high school algebra course, that cover topics rigorously. This preview version is being released in stages several chapters at a ...

CK-12’s Algebra I Second Edition is a clear presentation of algebra for the high school student. Topics include: Equations and Functions, Real Numbers, Equations of Lines, Solving Systems of Equations ...

CK-12 Foundation’s Basic Algebra FlexBook® textbook is an introduction to the algebraic topics of functions, equations, and graphs for middle-school and high-school students.

It is an educational conte ...

You'll learn the algorithms needed to solve a quadratic equations in the most general case, as well as the formula that allow to construct a quadratic equation while knowing the value of the solut ...

You will learn to solve simple equations of first degree and problems whose statements can be formulated as linear equations of first degree.

Definition and how to solve linear equations is a didactic ...