Science360
Balloon over candle
A water-filled balloon can be held over a candle. Or a torch.... Parts needed: 1 water balloon, 1 candle or torch
Brian McLogan
Given a circle find the measure of an arc
Learn how to solve problems with arcs of a circle. An arc is a curve made by two points on the circumference of a circle. The measure of an arc corresponds to the central angle made by the two radii from the center of the circle to the...
Brian McLogan
How to memorize the unit circle
👉 Learn about the unit circle. A unit circle is a circle which radius is 1 and is centered at the origin in the cartesian coordinate system. To construct the unit circle we take note of the points where the unit circle intersects the x-...
Brian McLogan
How to convert an angle in degrees to radians
👉 Learn all about angles of trigonometry. In this playlist, we will explore what makes up an angle and how to graph an angle in degrees or radians to determine the quadrant. We will then take a look at angle relationships such as...
Brian McLogan
Given the magnitude and direction of a vector write in component form
Want more math video lessons? Visit my website to view all of my math videos organized by course, chapter and section. The purpose of posting my free video tutorials is to not only help students learn math but allow teachers the...
Curated Video
Rotations in the Coordinate Plane
In this video lesson we will learn how to rotate figures in the coordinate plane about the origin. We will understand that all rotations result an image that is congruent to the original figure. The origin will be the center of rotation....
Curated Video
How to Describe Extra Numbers in IELTS Task 1
Today you’ll find out how to describe extra numbers in IELTS Task 1 tables and charts. Recently, a student told me about a table she had to describe, and she wasn’t sure where to put some of the numbers in her essay. It was a table about...
Next Animation Studio
German pioneers solar cooking reflectors in Mexico
A German entrepreneur is manufacturing and installing solar deflector stoves for cooking in El Sauz, Mexico.Gregor Schappers adopted the design of Austrian inventor Wolfgang Scheffler for the stoves. An average reflector measures eight...
Brian McLogan
What are acute, obtuse, right, and straight angles
👉 Learn how to define angle relationships. Knowledge of the relationships between angles can help in determining the value of a given angle. The various angle relationships include: vertical angles, adjacent angles, complementary angles,...
Brian McLogan
What is binomial expansion
👉 Learn all about binomial expansion. A binomial expression is an algebraic expression with two terms. When a binomial expression is raised to a positive integer exponent, we usually use the binomial expansion technique to easily expand...
Brian McLogan
Using binomial expansion to expand a binomial to the fourth power
👉 Learn how to expand a binomial using binomial expansion. A binomial expression is an algebraic expression with two terms. When a binomial expression is raised to a positive integer exponent, we usually use the binomial expansion...
Brian McLogan
Determine two coterminal angles positive and negative
👉 Learn how to determine co-terminal angles given one angle. An angle is a figure formed by two rays that have a common endpoint. The two rays are called the sides of the angle while the common endpoint is called the vertex of the angle....
Brian McLogan
What is a unit circle basics
👉 Learn about the points on the unit circle. A unit circle is a circle which radius is 1 and is centered at the origin in the cartesian coordinate system. To construct the unit circle we take note of the points where the unit circle...
Brian McLogan
What are the angles of the unit circle in radians
👉 Learn about the angles on the unit circle. A unit circle is a circle which radius is 1 and is centered at the origin in the cartesian coordinate system. To construct the unit circle we take note of the points where the unit circle...
Brian McLogan
Rewriting a number in radians in degrees using the conversion ratio
👉 Learn how to convert angles from radians to degrees. Recall that pi radians is equivalent to 180 degrees. Thus, when given an angle in radians, to convert the angle to degrees we multiply the given angle radians by the ratio 180/pi.
Visual Learning Systems
Factors Influencing Regional Temperatures
In this video, the teacher explains the major difference in climate between northern New England and Florida, which is temperature. They discuss how latitude plays a significant role in determining the temperature of a region. The video...
Next Animation Studio
Chile eruption: How volcanic ash stops a jet engine
Chile has raised its alert status to the highest level after a volcano began erupting on Saturday. The 3,000-meter Copahue volcano, located in Argentina's Neuquen Province, began spewing ash into the air on Saturday morning. Planes...
Brian McLogan
How to determine the missing value of a triangle using sine
👉 Learn how to find a missing side length of a right triangle. A right triangle is a triangle that has 90 degrees as one of its angles. The trigonometric identities of right triangles give us the relationship between the angles of a...
Brian McLogan
How to evaluate for tangent using a calculator in radians tan
👉 Learn how to evaluate trigonometric functions using a calculator. To evaluate the trigonometric functions using a calculator, we just punch the necessary buttons on the calculator to obtain the result. While this may seem simple, most...
Brian McLogan
Evaluate the half angle of tangent for 105 degrees
👉 Learn how to evaluate the Sine of an angle using the half-angle formula. The half-angle formula for Sine is helpful when you need to determine the exact value of function given an angle but cannot use a calculator or the angle is not...
Brian McLogan
Convert point from polar to rectangular
Learn how to convert points between rectangular and polar. Rectangular points measure the horizontal and vertical distance away from the origin whereas polar coordinates measure the direct distance and angle in standard position from the...
Physics Girl
This phenomenon only happens in Hawaii . . . and Cuba & Nigeria & Indonesia & Peru & Sudan & Laos &…
There are apparently no shadows in these images. But they were taken during the brightest part of the day. There are only certain parts of the year and certain times of day when you can experience the subsolar point or Lahaina noon....
Brian McLogan
Use the sum of interior angles to find the measure of one interior angle ex 2
👉 Learn how to determine the measure of the interior angles of a regular polygon. A polygon is a plane shape bounded by a finite chain of straight lines. A regular polygon is a polygon whose sides are congruent (equal). The interior...
Brian McLogan
Using a semi circle to determine the measure of a minor arc
Learn how to solve problems with arcs of a circle. An arc is a curve made by two points on the circumference of a circle. The measure of an arc corresponds to the central angle made by the two radii from the center of the circle to the...