SchoolOnline's Primary Maths videos are brilliant, bite-size tutorial videos delivered by examiners. Ideal for ages 9-13, they cover every key topic and sub topic covered in Maths in clear and easy to follow steps.



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The Cannizzaro reaction is pretty old, over 150 years old in fact, but it is still an important reaction in organic chemistry. It involves the disproportionation of two equivalents of an aldehyde, meaning one is oxidized to the...

Integer exponents greater than one represent the number of copies of the base which are multiplied together. But what if the exponent is one, zero or negative? Using the rules of adding and subtracting exponents, we can see what the...

Subtracting a whole number from a fraction

Learn how to add/subtract rational expressions. When adding or subtracting two or more rational expressions with common denominators, we add or subtract only the numerator while we keep the denominator the same. We will then simplify our...

👉 Learn all about the processes and definitions for solving linear equations. You will gain a better understanding about the vocabulary and steps used to solve liner equations such as how to isolate an equation and apply inverse...

In this video, students learn how to recognize equivalent fractions using area models. The teacher explains the importance of considering both the numerator and denominator when comparing fractions. Through the use of visual examples,...

👉 Learn how to solve proportions. Two ratios are said to be proportional when the two ratios are equal. Thus, proportion problems are problems involving the equality of two ratios. When given a proportion problem with an unknown, we...

Understanding Boolean Data Types and Using the Boolean NOT (!) operator to Switch Arduino Pin States

Learn how to add/subtract rational expressions. A rational expression is an expression in the form of a fraction where the numerator and/or the denominator are/is an algebraic expression. When adding or subtracting rational expressions...

In this video lesson, we learn about similar figures and indirect measurement. The teacher explains how to identify similar figures, find missing side lengths using proportional ratios, and use angle-angle similarity to solve problems....

In this video lesson we will learn the definition of a percent as a part of 100. We will identify the percent represented by a shaded illustration. We will write percents as decimals. We will write decimals as percents. We will...

👉 Learn how to divide fractions. To divide two fractions, we multiply the first fraction by the reciprocal of the second fraction. (The reciprocal of a fraction is swapping the positions of the numerator and the denominator). It is...

In this video, the teacher explains how to subtract mixed numbers with like denominators by replacing them with equivalent fractions using number lines. The lesson emphasizes the importance of working with the same whole and ensuring the...

👉 Learn about angles in trigonometry. An angle is the figure formed by two rays sharing the same endpoint. The two rays are called the sides of the angle while the common endpoint of the two rays is called the vertex of the angle. Angle...

Any fraction can be converted into an equivalent decimal number with a sequence of digits after the decimal point, which either repeats or terminates. The reason can be understood by close examination of the number line.

Introducing equivalent fractions using visual models.

This video lesson teaches students how to solve multi-step problems involving positive and negative fractions using the order of operations. It emphasizes the importance of understanding the order of operations and provides examples of...

This video will provide a procedural checklist for the method completing the square to solve a quadratic equation when the value of a is not 1 when written in standard form. Topics covered - solving a quadratic equation, finding the...

This nugget explains Ohm's law and its derivations for a system of cells in series and parallel.

In this video, the teacher explains how to identify equivalent expressions by using substitution. They review the order of operations and discuss common mistakes. Then, they demonstrate how to check if two expressions are equivalent by...

This video lesson will provide instruction on how to write and solve a percent proportion to find percents, parts or wholes. Proportional relationships will be reviewed, explained and connected to percents to solve multistep percent...

Identify equivalent fractions using area models.

Equivalent force couple systems redraw a an equivalent free body diagram about a certain point. The object under analysis will always behave the exact same way. The equivalent moment about your point is your couple and the equivalent...