Instructional Video
Sophia Learning

Sophia: Coordinate Geometry of Rectangles

9th - 10th Standards
This detailed lesson uses slope, midpoint, and distance formulas to prove a quadrilateral is a rectangle in the coordinate plane.
Instructional Video
Sophia Learning

Sophia: Coordinate Geometry of Rectangles

9th - 10th Standards
Coordinate geometry of rectangles is investigated in this video lesson. The tutorial demonstrates how to use the midpoint, distance, and slope formulas to determine if a quadrilateral is a rectangle on a coordinate plane. [17:26]
Instructional Video
Sophia Learning

Sophia: Interpreting Slope

9th - 10th Standards
This video lesson demonstrates how to interpret the slope of linear equations to determine if lines are parallel or perpendicular. Students can check their understanding with an assessment.
Instructional Video
Sophia Learning

Sophia: Area of Quadrilaterals: Taking' It to the Streets

9th - 10th
This lesson provides a video that shows examples of various quadrilaterals in the real world. A notes sheet follows describing the characteristics of each quadrilateral and how to find the area of several figures. [3:37]
Instructional Video
Sophia Learning

Sophia: Parallel Construction

9th - 10th Standards
This lesson discusses parallel construction and why it is important. [5:04] L.9-10.1a Parallelism
Instructional Video
Virtual Nerd

Virtual Nerd: How Do You Find a Value for X That Makes Two Lines Parallel?

9th - 10th Standards
This tutorial shows you how to find x so two lines are parallel. [2:47]
Instructional Video
University of Virginia

Uva Virtual Lab: Capacitors and Resistors in Parallel

9th - 10th
In this simulation, the cell will be used to charge a capacitor. The capacitor will then be used to operate two light bulbs until the capacitor is discharged.
Instructional Video
Khan Academy

Khan Academy: Adding Up Resistance Problem

9th - 10th
Here's a chance to see if you can combine what you know to add up resistance in series AND in parallel. Rishi is a pediatric infectious disease physician and works at Khan Academy. [3:21]
Instructional Video
Khan Academy

Khan Academy: Current Through Resistor in Parallel: Worked Example

9th - 10th
How to calculate the current through a resistor in parallel using equivalent resistance and Ohm's law. [4:32]
Instructional Video
Sophia Learning

Sophia: Slope of Parallel Lines: Lesson 4

9th - 10th Standards
The slope of parallel lines is discussed in this lesson. It is 4 of 5 in the series titled "Slope of Parallel Lines."
Instructional Video
Sophia Learning

Sophia: Slope of Parallel Lines: Lesson 1

9th - 10th
The slope of parallel lines is discussed in this lesson. It is 1 of 5 in the series titled "Slope of Parallel Lines."
Instructional Video
Sophia Learning

Sophia: Nonintersecting Planes Tutorial

6th - 8th
Determine whether planes will intersect or will not intersect in this video lesson.Check your understanding with a quick assessment. [3:27]
Instructional Video
Sophia Learning

Sophia: Drawing Three Dimensional Objects

9th - 10th Standards
This video tutorial demonstrates how to draw three-dimensional figures such as a cube and triangular prism. [4:28]