In this video, the teacher explains how to multiply fractions by fractions using area models. Through a real-world example of feeding fish to whales and penguins, the teacher demonstrates step by step how to solve the problem.

👉 Learn how to divide mixed numbers. To divide mixed numbers, we first convert the mixed numbers to improper fractions. After we have converted the mixed numbers to improper fractions, we can then multiply the first fraction by the...

This video is a tutorial on how to add and subtract fractions, including mixed numbers. The presenter emphasizes the importance of having a common denominator before adding or subtracting fractions with different denominators. They...

This video lesson teaches students how to find the area of a polygon by multiplying the length and width. It explains the concept of area and reviews the use of arrays for multiplication. The video also emphasizes the importance of not...

The video explains the use of standard form in chemistry to express very large or very small numbers in a more manageable way for calculations. It provides examples of converting numbers to standard form and demonstrates how to multiply...

👉 Learn how to evaluate the limit of a function using the difference quotient formula. The difference quotient is a measure of the average rate of change of the function over an interval, h. The limit of the difference quotient gives the...

Learn how to add/subtract vectors. Vectors can be added, subtracted and multiplied. To add or subtract two or more vectors, we simply add each of the corresponding components of the vectors.

This is a lecture video on the turns ratio equation for transformers. The video explains how the potential difference across the primary and secondary coil of a transformer depends on the number of turns of wire in each of the coils. The...

In this lesson, students explore the relationship between squaring and taking the square root through visual representations and definitions. They learn that squaring a number gives the area of a square, while taking the square root...

In this lesson, students will learn how to multiply whole numbers by fractions using repeated addition models. They will understand that multiplication can be thought of as equal groups or repeated addition. Through various examples and...

In this lesson, students will learn how to create equivalent fractions by multiplying both the numerator and denominator of a fraction by the same number. They will explore this concept through visual representations on number lines.

In this videos series I show you how to add and subtract complex rational numbers. Just like any rational numbers we need to have the denominators equal. So for these problems we work on finding the least common denominator and then...

Algebraic fractions are simply fractions with algebraic expressions either on the top, bottom or both. We treat them in the same way as we would numerical fractions.



In this video we look at how to simplify algebraic...

👉 Learn about solving logarithmic equations. Logarithmic equations are equations involving logarithms. To solve a logarithmic equation, we first use our knowledge of logarithm laws/properties to express the terms in both sides of the...

👉 Learn how to evaluate the limit of a function involving trigonometric expressions. The limit of a function as the input variable of the function tends to a number/value is the number/value which the function approaches at that time....

👉 Learn how to find the derivative of a function using the chain rule. The derivative of a function, y = f(x), is the measure of the rate of change of the function, y, with respect to the variable x. The process of finding the derivative...

👉 Learn how to find the derivative of an implicit function. The derivative of a function, y = f(x), is the measure of the rate of change of the function, y, with respect to the variable x. The process of finding the derivative of a...

👉 Learn the basics of simplifying radicals. A radical is an expression having the root/radical symbol. A radical expression can also be rewritten as an expression with fractional/rational exponent. The number outside the radical symbol...

👉 Learn how to solve quadratic equations using the quadratic formula. A quadratic equation is an equation whose highest power on its variable(s) is 2. The quadratic formula is a formula which can be used to find the roots of (solve) a...

👉 Learn about solving an inequality and graphing it's solution. An inequality is a relation where the expression in the left hand side is not equal to the expression in the right hand side of the inequality sign. A linear inequality is...

Once a system of linear equations has been converted to augmented matrix form, that matrix can then be transformed using elementary row operations into a matrix which represents a simpler system of equations with the same solutions as...

Arithmetic operations with fractions can be visualized using the number line. This chapter starts by adding fractions with the same denominators and explains the logic behind multiplication of fractions.

In this video, the teacher explains how to use the commutative and associative properties to transform multiplication expressions. They provide step-by-step examples using rational numbers, fractions, and decimals to demonstrate the...

Learn how to add/subtract rational expressions with monomials in the denominator. When adding or subtracting two or more rational expressions with common denominators, we add or subtract only the numerator while we keep the denominator...