Instructional Video20:13
Curated Video

Problem solving with similarity

Pre-K - Higher Ed
Pupil outcome: I can use my knowledge of similarity to solve problems. Key learning points: - A scaled version of a shape is very useful. - Being able to scale the perimeter can reduce the number of calculations. - Enlargement...
Instructional Video22:28
Curated Video

Checking and securing understanding of polygons

Pre-K - Higher Ed
Pupil outcome: I can recognise and name polygons with five or more sides and recognise the difference between regular and irregular shapes. Key learning points: - The prefix is derived from Ancient Greek. - A regular polygon has sides...
Instructional Video25:18
Curated Video

Checking and securing understanding of changing the subject

Pre-K - Higher Ed
Pupil outcome: I can apply an understanding of inverse operations to a formula in order to make a specific variable the subject. Key learning points: - Rearranging the formula may be beneficial when what you wish to calculate is not the...
Instructional Video25:45
Curated Video

Calculating missing side lengths from the area of composite rectilinear shapes

Pre-K - Higher Ed
Pupil outcome: I can calculate a missing side length from the area of a composite rectilinear shape. Key learning points: - Given the area, it is possible to calculate a missing side length. - The most efficient method may depend on the...
Instructional Video30:02
Curated Video

Checking and securing understanding of congruence and similarity

Pre-K - Higher Ed
Pupil outcome: I can identify (by eye) which shapes are congruent, similar or neither. Key learning points: - If two shapes are congruent, then they are similar. - A ratio table can be a helpful tool for checking the multipliers. - The...
Instructional Video29:00
Curated Video

Constructing rhombi

Pre-K - Higher Ed
Pupil outcome: I can use intersecting circles to construct rhombi from given lengths. Key learning points: - A rhombus can be created from two isosceles triangles. - An isosceles triangle can be constructed from a given base and side...
Instructional Video31:58
Curated Video

Advanced problem solving with algebraic manipulation

Pre-K - Higher Ed
Pupil outcome: I can use my knowledge of algebraic manipulation to solve problems. Key learning points: - Quadratic equations can model real-life situations. - Solutions would need to be interpreted in context. - The difference of two...
Instructional Video32:55
Curated Video

Solving quadratic equations by completing the square

Pre-K - Higher Ed
Pupil outcome: I can solve quadratic equations algebraically by completing the square. Key learning points: - There are other methods to find the solutions of a quadratic equation. - One of these methods is called completing the square....
Instructional Video35:10
Curated Video

Perpendicular linear graphs

Pre-K - Higher Ed
Pupil outcome: I can prove the relationship between the gradients of perpendicular lines. Key learning points: - Two lines are perpendicular if they meet at right angles. - The product of the gradients of two perpendicular lines is -1 -...
Instructional Video4:45
Curated Video

The Right Way to Solve for Unknown Sides—Are You Doing It? | Math Defined with Mrs C | 7.EE.B.4

9th - Higher Ed
Welcome to Using one-step equations to find the unknown side lengths of geometric figures, with Mrs. C! If you need help understanding how to use one-step equations to find missing side lengths with given perimeters, we're here to help...
Instructional Video4:57
Curated Video

The Right Way to Solve for Unknown Sides—Are You Doing It?

9th - Higher Ed
Whether you're just starting out, or need a quick refresher, this is the video for you! Mrs. C will go show you step-by-step how to subtract these mixed numbers.
Instructional Video4:09
Curated Video

Using the Converse of the Pythagorean Theorem

9th - 12th
In this math video we will solve a math problem using the converse of the Pythagorean Theorem. We will understand the if the longest side of a triangle squared is equal to the sum of each square of the remaining two sides, then the...
Instructional Video5:04
Curated Video

Similar Triangles & Slope | 8.EE.B.6

9th - 12th
In this math video we will discuss similar triangles & slope. We will be presented with the graph of a line and two triangles arranged with their longest side on the line. We will have four statements to choose the one statement that...
Instructional Video3:44
Curated Video

Square and Cubic Unit Dimensions

K - 8th
Square and Cubic Unit Dimensions defines a unit cube as a cube with side lengths of one unit and the volume of one cubic unit by identifying the difference between a square unit and a cubic unit.
Instructional Video3:44
Curated Video

Possible Side Lengths

K - 8th
“Possible Side Lengths” demonstrates how to solve a real-world problem by finding possible side lengths for a rectangle with a given perimeter.
Instructional Video4:16
Curated Video

Area of Oblique Triangles

K - 8th
A video entitled “Area of Oblique Triangles” which models how to calculate the areas of oblique triangles.
Instructional Video4:23
Curated Video

Finding Heights and Lengths Using the Pythagorean Theorem

K - 5th
In this video, the teacher explains how to find the height of a building and the length of a television using the Pythagorean theorem. They review the formulas for the theorem and demonstrate how to round square roots to the nearest...
Instructional Video3:50
Curated Video

Finding the Length of a Diagonal Without Using a Ruler

K - 5th
In this video, the teacher explains how to find the length of a diagonal without using a ruler. They demonstrate the concept by creating squares and counting the units inside and outside the square. The teacher also introduces the...
Instructional Video5:17
Curated Video

Applying Exponents to Area and Volume Models

K - 5th
This video demonstrates this concept using examples of squares, cubes, and other multi-dimensional figures. The video highlights the relationship between multiplying bases and adding exponents to determine the total dimensions of a shape.
Instructional Video5:32
Brian McLogan

What is the difference between a regular and irregular polygon

12th - Higher Ed
👉 Learn about polygons and how to classify them. A polygon is a plane shape bounded by a finite chain of straight lines. A polygon can be concave or convex and it can also be regular or irregular. A concave polygon is a polygon in which...
Instructional Video5:01
Curated Video

Proving the Algebraic Squares Proof Using an Area Model

K - 5th
In this video, the teacher explains why (A+B)^2 is not equal to A^2 + B^2 and demonstrates how to prove the correct expansion using an area model. By visually representing the square of a binomial, the teacher shows that it consists of...
Instructional Video9:13
Brian McLogan

What are the special segments of similar triangles

12th - Higher Ed
👉 Learn how to solve with similar triangles. Two triangles are said to be similar if the corresponding angles are congruent (equal). Note that two triangles are similar does not imply that the length of the sides are equal but the sides...
Instructional Video14:48
Brian McLogan

Set up your triangle three different ways to evaluate six trig functions

12th - Higher Ed
👉 Learn how to determine the quadrant given the constraint. The plane is divided into four equal parts called the quadrants with the region between the positive x-axis and the positive y-axis called the 1st quadrant having angles 0 to 90...
Instructional Video4:19
Brian McLogan

How to set up your triangle when given a point to evaluate trig functions

12th - Higher Ed
👉 Learn how to evaluate the six trigonometric functions given a point. When given a point, there are many ways to evaluate the trigonometric functions of the point. The methods include: using the unit circle if the point is a point on...