New ReviewCan you determine the exact volume of a bottle based on the relative volume of other bottles? A series of four videos shows someone pouring fluid into bottles. Scholars must set up a system of equations to determine how much each bottle...

New ReviewMath is like another language with a vocabulary all its own. Translating verbal statements to mathematic symbols is a challenging task for learners. The video instruction provides several examples viewers watch—and rewatch—to improve...

New ReviewExpress yourself! Using a table method, the lesson presentation explains how to convert a verbal expression into an algebraic expression. The examples include problems with a variety of operations.

New ReviewVariable expressions can take many shapes and forms. Learners review the different components of many different variable expressions in a straightforward video lesson. After introducing vocabulary, the instructor uses context to write...

New ReviewYoung scientists learn the importance of experimental design and the key elements of an experiment. Through observing videos and designing their own experiments, scholars apply each lesson they learn.

New ReviewWhich modification is the best? Using the scientific method, pairs determine the effects of each control surface on the distance of a glider's flight. The activity, section 16 in a 22-part unit on aviation, allows pupils to gain a better...

New ReviewKeep everything under control. The lesson plan, the 16th segment in a 22-part unit, provides a more detailed look at the parts of a plane, specifically the control surfaces. Pupils learn about the construction of the wings and the tails...

Build a solid understanding of equivalence before introducing equations. An interactive lesson plan helps learners explore the concept of equivalent expressions. They use an applet to write and make conclusions about expressions.

What factors affect the time it takes a ball to roll down a ramp? Learners build an experimental design by considering these variables. They collect data in two-way frequency tables and analyze them for patterns.

Recycle, reuse, and rearrange! Young scholars learn to rearrange formulas to highlight a variable of interest. They then use their new formulas to make calculations.

Determine if your classes understand the meaning of independent and dependent variables. An application question asks scholars to define a set of variables as well as determine appropriate units for each. They must also consider the best...

The process is literally the same for solving an equation. Pupils gain practice in manipulating formulas and equations to solve for a variable of interest. The lesson connects solving literal equations to solving an one-variable...

Cut up an expression into its parts. Pupils review the vocabulary associated with algebraic expressions. Given an expression, learners identify its part. They also interpret the parts of the expression and the expression as a whole in...

Letters can be numbers, but numbers can't be letters. Viewers learn how to use variables in algebraic expressions. It shows the use of variables in conjunction with different operations.

Solving for one out of four isn't too bad. The assessment provides a formula in four variables. Given the formula, pupils solve for the variable that is quadratic.

What variables can be use to construct a predictive model of storm damage? Pupils identify two independent variables to use to predict the amount of damage a storm causes. They provide information about how they would measure the...

The number of bicycle wheel turns is as good as any way to describe the distance from school to home. An interactive lets young mathematicians determine the number of city blocks a person bicycles. They use this information along with an...

Investigate division within an algebraic term using an inquiry-based lesson. Individuals adjust sliders and watch as the simplification of the term changes. Questions help guide them to important conclusions.

Simply defined, algebra is arithmetic involving an unknown. The video introduces algebra by making the connection to arithmetic. Using examples, the presentation explains the use of variables and notation. The resource previews graphing...

Just rearrange the variables. The assessment contains three formulas. Pupils solve each literal equation for the indicated variable.

Use a Punnett square to calculate probabilities. The resource presents a situation in which two patients are randomly selected from a group of patients with a particular illness. Pupils use the interactive to determine the likelihood...

How much battery is left? Well, that depends on the time. The resource presents a situation in which the percent of a cell phone battery left is a function of time the phone has been in use. Pupils interpret an expression and an equation...

Systematically combine shapes to arrive at one solution. The resource models a system of linear equations using colored shapes. Pupils follow rules to combine circles and squares to add the two equations together, resulting in one...

Cover it up to reveal the values of variables. Using arrangements of colored tiles representing algebraic expressions, pupils layer them over each other to determine the values of variables. The procedure models the elimination method in...