New ReviewSo what's your angle? Scholars watch a brief video that looks at how to find the missing angles of a right triangle using trigonometry. The narrator explains inverse trigonometric functions and shows how to apply them when solving for...

New ReviewLook at dilations exponentially. Using a fractal from a museum exhibit, the installment from the Math at the Core: Ratios series introduces the term dilation. The presenter points out that dilations can make images either smaller or...

New ReviewCreate a 45-degree angle without bisecting an angle. A video shows a method to construct a 45-degree angle without needing to bisect a right angle. By constructing an isosceles right triangle, the presenter constructs a 45-degree angle...

New ReviewSplit it down the middle. Using the tools of geometric construction, the video shows two different methods of constructing a 30-degree angle. The first method bisects an angle of an equilateral triangle. The second uses the diagonal of a...

New ReviewWhat's in a triangle? Just 180 degrees worth of angles! Young learners use given angle relationships in a triangle to write an algebraic representation. Using a system of equations, they simplify the equation to a linear representation.

What do you call a quadrilateral in danger? A peril-lelogram! Scholars avoid danger by proving the opposite angles in a quadrilateral add up to 180 degrees. After viewing a brief video, they complete textbook exercises and a practice...

Scholars ponder the proof relating the center angle and circumference using a demonstrative video. Additional worksheets and textbook practice helps them demonstrate their intellect.

Young mathematicians observe a geometric proof using a short video. They see each part of the diagram clearly labeled and the simple math written off to the side. The new knowledge helps them solve additional problems independently.

Three angles in a triangle, three-dimensional space, it all seems connected somehow. Given several different triangles, pupils use the three angles of the triangle as coordinates to plot points in three-dimensional space. They explore...

Ready, aim ... learn! Increase scholars' understanding of force, mass, distance, and angle using an engaging interactive. Pupils participate in a series of rescue missions where they launch supplies at a target with an adjustable cannon....

How can opposites be equal? Pupils learn about the measures of angles when two lines intersect by watching an educational video. They see how vertical angles are congruent, and solve problems using this idea.

Angle in on the different types of angles. By watching an informative video, scholars see how to classify angles. It covers acute, right, obtuse, straight, and reflex angles. Some example problems focus on classifying angles given their...

The third angle's the charm. Viewers of a short video learn how to find the measure of the missing angle in a triangle. It uses an arithmetic process rather than an algebraic one, so younger learners have no trouble understanding the...

Supplement your geometry work with a straight-to-the-point video. A two-minute video reviews how to find the missing angle measure of a pair of supplementary angles given one of the measures. It works through a few examples of the...

Four angles hath quadrilaterals, but what be their measures? After watching a video, young mathematicians consider the interior angles of quadrilaterals. They see how to find missing angle measures using the properties of quadrilaterals.

Measure how well you know how to measure angles. Learners learn how to measure angles using a protractor. They watch a video that walks through a couple of examples of determining angle measures.

Come full circle with a lesson on angles. A noteworthy video describes how to calculate the measures of missing angles in a diagram. It goes through several examples in which the sum of the angles is always a full circle, or 360 degrees.

Sometimes, exact measurements aren't necessary. Scholars learn to estimate the measure of angles by watching a useful video. The method employed here is to use 90-, 180-, and 270-degree angles as benchmarks, adding or subtracting as...

What's your angle? A short video describes how to draw angles using a protractor. It goes through three examples: a 35-degree angle, a 105-degree angle, and a 215-degree angle. A worksheet gives some additional problems to consider.

Get some directions on how to use bearings with a minute-and-a-half video that shows how to solve a problem using bearings. The narrator gives two points and the bearings of a third point from each point. Scholars must then find the...

Bear with me while I teach budding mathematicians about bearings. Watching a video helps viewers understand the concept of bearing as the direction from due north. The informative video works through several examples of problems...

It's the skill where fractions and circles must work together. A thorough lesson models the process of finding the area of a sector using a radius and angle. The narrator extends instruction to include finding a radius of a circle from a...

Easy as pie ... with a little work anyway! A complete lesson provides video instruction on creating a pie chart from a set of data. The practice that follows helps learners draw their own pie charts while practicing skills from the video. 

Come look at trigonometry from a different angle. To begin a simple activity, scholars view a video of someone using a clinometer to find the angle of elevation to the top of a building. They then use a diagram that shows the building's...