Krista King Math
Intersecting Secants and Tangents with the Vertex On, Inside, and Outside the Circle
Prepare classes for the many segment and angle relationships within circles. The video lesson examines the relationship between secants, tangents, angles, and arcs. The instructor works through examples to demonstrate the relationships.
Krista King Math
Inscribed Angles of Circles
Relationships in circles build from the many connections made throughout the geometry course. The instructor in the video explains these connections as she builds the concept of inscribed angles. Using examples, the narrator highlights...
Krista King Math
Arc Length
Don't let your classes feel like they are going in circles. The video lesson shows pupils how to apply a formula to finding the length of an arc defined along a circle. The instructor uses three different examples to illustrate the...
Krista King Math
Circumference of a Circle
Apple, cherry, pecan, or circumference: so many different uses for pi! Delve into the calculations relating to the circumference of a circle. The instructor applies the circumference formula to three different types of problems.
Krista King Math
45-45-90 Triangles
45-45-90 triangles are half a square, which gives them a special status! The instructor explains the relationship of the sides of the 45-45-90 triangle using the Pythagorean Theorem as a reference.
Krista King Math
Finding Perimeter Using the Pythagorean Theorem
What would right triangles be without the Pythagorean Theorem? Here learners see how to apply the Pythagorean Theorem to finding missing sides of triangles. The examples include both right and non-right triangles.
Krista King Math
Area of Trapezoids
Rectangles, parallelograms, and now trapezoids — so many quadrilaterals! Building on the previous lessons in the series, the video introduces the formula for the area of a trapezoid. The instructor shows images of trapezoids and...
Krista King Math
Area of Rectangles Using Sums and Differences
Use the formula for the area of a rectangle for more than just rectangles! Scholars see that they can use common area formulas to find the area of irregular shapes.
Krista King Math
Volume of Cylinders
The world is full of cylinders — you just have to spot them! A video teaches learners how to calculate the volume of a right cylinder. The instructor introduces and discusses the elements of the formula for the volume of the...
Krista King Math
Nets of Cylinders
Nets allow young mathematicians to represent a three-dimensional solid in a two-dimensional space. The video describes the process of drawing the net of a geometric cylinder.
Krista King Math
Volume of Pyramids
Help your classes form an appreciation for pyramids like the Egyptians! The instructional video explains the components of a pyramid and the formula for the volume of the pyramid. The example shows how to calculate the volume given...
Krista King Math
Surface Area of Prisms
Create a solid understanding of the concept of surface area. Building from the previous lesson in the series, the instructor demonstrates how to apply a formula to find the surface area of a rectangular prism. Examples use the formula to...
Krista King Math
Volume of Prisms
Applying formulas to different scenarios is a necessary skill in mathematics. Learners see how to find the volume of a rectangular prism using a volume formula.
Krista King Math
Tangent Lines of Circles
A video instructor explains the meaning of a line tangent to a circle. She then works through an application problem applying the tangent-radius relationship.
Krista King Math
Degree Measure of an Arc
Circular patterns and movement are commonplace in our world. Young mathematicians begin their study of circles with instruction on finding the degree measure of both major and minor arcs. Examples focus on the arc in relation to the...
Krista King Math
Area of Circles
Show your classes how exciting it can be to solve a complex problem. The instructor in the video shows how to apply the formula for the area of a circle to finding the area of complex images.
Krista King Math
30-60-90 Triangles
Half of an equilateral triangle is a special right triangle. A video instructor shows how to find the pattern of the side lengths for a 30-60-90 triangle. She then applies the relationship to different examples.
Krista King Math
Pythagorean Inequalities
Right, acute, or obtuse: how do you know? Learners observe how to use the Pythagorean Theorem to determine the type of triangle from a set of side lengths. The video includes an example of each triangle type.
Krista King Math
Pythagorean Theorem
A YouTube video efficiently describes the process of using the Pythagorean Theorem. It includes an example of finding the hypotenuse and another that finds the length of a leg.
Krista King Math
Area of a Triangle
Triangles are not all created the same. The instructor shows how to find the area of different types of triangles using the formula. She also includes an example requiring coordinate geometry.
Krista King Math
Area of Parallelograms
Ensure a solid understanding of the components of a parallelogram. The instructor highlights the key concepts when determining the area of a parallelogram. He presents the formula used for parallelograms as images and as...
Krista King Math
Area of Rectangles
A critical skill in mathematics is using formulas to solve problems. Learners see the area formula for rectangles applied to three different types of problems. The video instructor demonstrates problems represented with a diagram,...
Krista King Math
Composite Functions and Their Domains
What do musicians and mathematicians have in common? Compositions! Learners review function composition in the previous video in a series of 29, and expand that review to include the domain of the composition. The instructor uses...
Krista King Math
How to find Domain and Range for a function
Calculating domain and range of a function is a challenge! A helpful video shows learners the steps to finding the domain and estimating the range algebraically. Scholars understand the relationship of the domain and range.