Students will solve rational equations for unknown variables, use given information to create rational equations, and determine the relationship between rational expressions.

In this hands-on activity - rolling a ball down an incline and having it collide into a cup - the concepts of mechanical energy, work and power, momentum, and friction are all demonstrated. During the activity, students take measurements...

In this hands-on activity - rolling a ball down an incline and having it collide into a cup - the concepts of mechanical energy, work and power, momentum, and friction are all demonstrated. During the activity, students take measurements...

Features the history behind the construction of the Tomb of the Unknowns and descriptive details of the tomb itself.

This site from the Arlington National Cemetery provides full coverage of information on the Tomb. Be sure to click on the Vietnam War hyperlink for the full story of the Vietnam War Unknown. Site also provides excellent pictures.

This site from the Arlington National Cemetery provides full coverage of information on the Tomb. Be sure to click on the Vietnam War hyperlink for the full story of the Vietnam War Unknown. Site also provides excellent pictures.

This site from the Arlington National Cemetery provides full coverage of information on the Tomb. Be sure to click on the Vietnam War hyperlink for the full story of the Vietnam War Unknown. Site also provides excellent pictures.

This site from the Arlington National Cemetery provides full coverage of information on the Tomb. Be sure to click on the Vietnam War hyperlink for the full story of the Vietnam War Unknown. Site also provides excellent pictures.

This site from the Arlington National Cemetery provides full coverage of information on the Tomb. Be sure to click on the Vietnam War hyperlink for the full story of the Vietnam War Unknown. Site also provides excellent pictures.

This site from the Arlington National Cemetery provides full coverage of information on the Tomb. Be sure to click on the Vietnam War hyperlink for the full story of the Vietnam War Unknown. Site also provides excellent pictures.

This site from the Arlington National Cemetery provides full coverage of information on the Tomb. Be sure to click on the Vietnam War hyperlink for the full story of the Vietnam War Unknown. Site also provides excellent pictures.

This site from the Arlington National Cemetery provides full coverage of information on the Tomb. Be sure to click on the Vietnam War hyperlink for the full story of the Vietnam War Unknown. Site also provides excellent pictures.

This site from the Arlington National Cemetery provides full coverage of information on the Tomb. Be sure to click on the Vietnam War hyperlink for the full story of the Vietnam War Unknown. Site also provides excellent pictures.

This page, part of a larger UNESCO site on math and science education, has 15 basic, open- and multiple-choice algebra questions, with the correct answer immediately following the question. Entirely in Arabic.

[Free Registration/Login may be required to access all resource tools.] In this learning module, students must solve equations to find the value of one or more unknowns, then determine the value of another unknown using division....

Students learn to use the calculator to generate recursive patterns. They explore the connection from patterns to functions and algebraic reasoning. Students examine the idea of a variable for an unknown quantity and express mathematical...

[Free Registration/Login may be required to access all resource tools.] In this lesson, students learn how to solve multi-step equations by combining like terms. Students examine guided notes, review example problems, watch instructional...

This lesson will provide examples that use the characteristics of rhombi to solve for unknown variables, side lenths, and angle measures. It is 4 of 5 in the series titled "Rhombi Practice Problems."

This lesson will demonstrate how to solve for unknown variables and segment lengths in problems that involve midpoint and segment bisectors. It is 1 of 5 in the series titled "Segment Bisectors Problems."

This lesson presents how to apply the triangle proportionality theorem to solve for unknown variables and side lengths. It is 4 of 6 in the series titled "Triangle Proportionality Theorem."

Create math problems with this word problem generator. Just choose your operation, problem, unknown variable, and number range to create one problem or a list of 10 problems. Answers can be checked online or problems can be printed.

Use this calculator to calculate unknown variables for a cube such as a side length, face diagonal, solid diagonal, surface area, and volume.

Students study the physical properties of different fluids and investigate the relationship between the viscosities of liquid and how fast they flow through a confined area. Student groups conduct a brief experiment in which they...

This site from the Arlington National Cemetery provides full coverage of information on the Tomb. Be sure to click on the Vietnam War hyperlink for the full story of the Vietnam War Unknown. Site also provides excellent pictures.