Curated OER
How Do You Use a Graph to Reflect a Figure Over the X-Axis?
A reflection is just what you think it is, a mirror image. So how do you reflect a figure on a graph? Just flip it over. The teacher illustrates how to select a line of reflection (the x-axis) and make the calculations to flip the figure.
Curated OER
What is a Reflection?
There are many ways to transform geometric figures. This lesson will illustrate how to reflect figures over a line to get a mirror image of the figure. The teacher will draw three different reflections: one as reflected over the y-axis,...
Mathed Up!
Mixed Transformations
Viewers learn how to identify and perform a variety of transformations with a video that provides seven items on transformations. Pupils demonstrate their understanding of dilations, reflections, rotations, and translations. The video...
Virtual Nerd
How Do You Use a Graph to Reflect a Figure Over the Y-Axis?
A reflection is just what you think it is, a mirror image. So how do you reflect a figure on a graph? Just flip it over. The teacher illustrates how to select a line of reflection (the y-axis) and make the calculations to flip the figure.
Curated OER
How Do You Use Coordinates to Reflect a Figure Over the X-Axis?
Perform a reflection of a figure over the x-axis. This seems pretty straightforward. But also learn how to use the coordinates to reflect a figure.
Curated OER
How Do You Use Coordinates to Reflect a Figure Over the Y-Axis?
Perform a reflection of a figure over the y-axis. This seems pretty straightforward. But also learn how to use the coordinates to reflect a figure.
Curated OER
What is a Line of Reflection?
Line of reflection is basically a geometry term used in the transformation of figures. It identifies the line on the graph that you reflect a figure over. The line can be vertical, horizontal, and diagonal. Actually, it can be any line...
Khan Academy
Recognizing Odd and Even Functions
This video gives a formal definition of odd and even functions, as well as, an intuitive feeling for how they are different. By looking at the graphs of both types of functions, Sal shows the reflection properties of both functions....
Mathed Up!
Reflections
Tracing paper is not just for art anymore — pupils can use it to find reflected images, too! Two videos show how to reflect images using tracing paper and find the reflection between the pre-image and image. Learners perform reflections...
Curated OER
How Do You Rotate a Figure 90 Degrees Clockwise Around the Origin?
Show your class how to rotate a figure 90 degrees clockwise around the origin of a coordinate plane. The lecturer explains the concepts and steps involved in reflecting a figure across the y-axis. Consider providing this for learners as...
Corbett Maths
Finding the Mirror Line
Where does the reflection come from? The vivdeo starts with a quick review of the form of the equation of horizontal and vertical lines and diagonals passing through the origin. Using a pre-image and an image of a reflected figure, the...
Lesson Planet
EdTech Tuesdays: Open Source Learning with David Preston (extended)
What is open source learning and how can the approach be used in the classroom? David Preston, a teacher from a school where traditionally few kids continue their education post graduation, discusses how open source learning has...
Flipped Math
Reflections
Take some time to reflect on graphing. Learners count a point's distance from the line of reflection to create reflections of geometric figures. Given the rules for four basic lines of reflections, pupils determine the points to create...
Corbett Maths
Describing Reflections
Don't flip out over the resource, but be sure to flip the figures. By watching a short YouTube video, scholars learn about reflections in the coordinate plane. They see how to identify the line of reflection given two figures.
Flipped Math
Rotations
Turn the class around. Scholars define rotations of multiples of 90 degrees and create algebraic mappings for them. After an introduction to symmetry, pupils determine which letters of the alphabet have rotational and reflectional...
Corbett Maths
Reflections
Reflect on your knowledge of reflections. Pupils watch a YouTube video to learn how to perform reflections of two-dimensional figures over a line. The resource includes examples with a reflection over a vertical line and over a diagonal...
TED-Ed
The Science of Symmetry
No matter which way you slice it, the definition of symmetry might not be clear. The narrator of the video reflects on its true meaning as shapes, plants, and animals dance onstage for a captivated cartoon audience. Your class will be...
Curated OER
How Do You Rotate a Figure 180 Degrees Around the Origin?
Demonstrate how to rotate a figure around the origin of a coordinate plane. The instructor in this video tutorial explains the concept deliberately, showing how to complete the rotation as she presents the information. After she finishes...
Curated OER
How Do You Rotate a Figure 270 Degrees Clockwise Around the Origin?
Pupils who view this tutorial will gain a better understanding of how to rotate a figure around the origin of a coordinate plane. This video covers how to rotate clockwise and counterclockwise to achieve the same purpose. Show this video...
Physics Girl
Why Aren't Plants Black?
In an evolutionary sense, plants seem to have it all figured out. But, do they really? The narrator of an engaging physics video that is part of a larger series questions the predominant color of plants in a short video. Content includes...
Infinite Thinking Machine
ITM 16: Learning a Go Go
The mobile revolution is transforming how we teach as educators, and this video will give you an opportunity to consider how to best utilize the abundance of technology that we and our class members have available at the tips of our...
Smithsonian Institution
Time: It’s Like, so Deep
Time can be relative but sometimes it is relevant. Large numbers are difficult for pupils to imagine ... and large time scale even more so. A video presentation from the Good Thinking PD series offers tips for teachers to give learners a...
Curated OER
How Do You Translate a Polynomial Function Vertically?
Want to move a graphed function up or down? This is called a function translation. This video looks at translating a cubic function up three units. It considers the function in standard form, the graph of the function, and a table of...