Demostrates how to take any triangle and make it become the medial triangle of a larger triangle. Also explains that the three altitudes of a triangle are concurrent. [10:01]

This video demonstrates how to add trinomials.

This video demonstrates how to solve a word problem using an expression and substituting values for a variable.

This video lesson provides an introduction to subrtraction.

Video lesson deriving the formula for finding the probability of k heads in n flips. Includes the formula for calculating combinations. [11:40]

Video lesson deriving the formula for finding the probability of k heads in n flips.

Video shows how to simplify expressions showing multiplication and how to write products with variables without multiplication signs.

Identifying parallel and perpendicular lines in a diagram. [3:34]

Identifying parallel and perpendicular lines in a given diagram.

This video demonstrates how to write a linear equation in slope-intercept form. The example in the video gives the slope and the y-intercept as an ordered pair. The video also explains the slope-intercept formula y=mx + b. Practice...

This video demonstrates how to write a linear equation in slope-intercept form.

Demonstrates how to derive a version of Heron's formula using the Pythagorean Theorem and the formula for the area of a triangle. Applies Heron's formula to solve a sample problem. [10:59]

This video covers the decimal place value.

In this video lesson students are provided an introduction to addition by looking at multiple visual ways to represent addition.

Students watch a detailed example that examines if a set of data is linear. A video tutorial examines the algebra concept.

This video demonstrates how to determine if a function is linear or not based on a table of x and y values. It also demonstrates how to graph the values in order to check if the function is linear or not. [4:01]

Video showing how to determine whether a set of data points represents a function that is linear or nonlinear.

Watch a short video to review adding two digit numbers without carrying.

Video demonstration of reading a box-and-whisker plot to find the range, median and quartiles and to answer a question. [3:18]

This video shows the distributive property of multiplication over subtraction.

A video that demonstrates how to solve linear equations of the form Ax=B.

Explores the variety of two-dimensional cross-sections that can be obtained by slicing a cube. [7:23]

Given a real-world context about the number of balls in a bag, we find a linear inequality that correctly depicts the situation. [2:19]

Given a real-world context about the number of fruits bought, we find a linear inequality that correctly depicts the situation. [3:52]