Planning a unit on simple machines? Save some time and energy with this collection of lessons and activities that explores how these devices are used in the real world to make life a little easier. 

Humans can have a big impact on the environment, specifically the influence they have on the carbon cycle. First, the class will define and discuss each of the earths four major spheres, the biosphere, hydrosphere, atmosphere, and...

Solving equations in two variables can't be that much harder than solving equations in one variable. Using a balance interactive, scholars solve equations in two variables. They apply inverse operations by adding -x, -y, or -1 as...

Find the right balance between concrete and abstract thinking. After using interactive balances to explore inverse operations, learners solve multi-step equations with variables on both sides. Of course, they can still use the...

Not all interactives are made equal. Scholars use an interactive balance to explore the concept of equality. They place different objects on balances to determine the number of each object needed to balance the scale.

Wait til your class gets their hands on this! Aspiring engineers design a working robotic arm in the fifth and final installment in a series of ocean exploration lessons. Pupils learn about the use of underwater robots in ocean...

Teams must determine the size of cavern needed to house the citizens of Alabraska to protect them from the asteroid impact. Using scaling properties, teams first determining the number of people that could sleep in a classroom and then...

Express your wonder at this resource. Middle schoolers solve 10 short problems in the expressions and equations domain. They apply operations with scientific notation, set up and solve equations, and analyze linear equations.

Does a tennis ball have energy? What about a bowling ball? Demonstrate concepts of different forms of energy forms and states with a variety of objects. Using the equations for potential and kinetic energy,...

With so many math standards to fit into a school year, it can be difficult keeping track of what you have and have not covered. This collection of Common Core checklists allows you to maintain a running record of when each...

Join Zoe and Sam as they use proportions to budget money for their Green Earth Club. Watch as they set up and solve a series of proportions using cross multiplication and division. A great resource that brings together prior knowledge of...

Math can be magical with exercises such as this! Prealgebrarians produce answers for nine linear equations. Each answer is placed into a square. If all answers are correct, the square will end up Sudoku-style: numbers in each row,...

Brainiacs explore the concept of solving single-variable equations.They use inverse operations to solve equations, and participate in activities such as balancing an equation scale. This is an awesome instructional activity, complete...

What do Newton's Laws have to do with getting from Earth to Mars?The activities in this resource show how Newton's Laws work with rockets to get them into space. Background information includes facts about orbits and how orbits...

[Free Registration/Login may be required to access all resource tools.] Solve inequalities and represent the solution in equation notation, set notation, interval notation, or solution graph. Students examine guided notes, review guided...

[Free Registration/Login may be required to access all resource tools.] In this lesson students verify that solutions to algebraic equations are correct. Students watch a video tutorial, explore guided notes and attempt practice problems.

[Free Registration/Login may be required to access all resource tools.] This lesson covers solving expressions or equations for a given value. Students watch a video tutorial, explore guided notes and attempt practice problems.

[Free Registration/Login may be required to access all resource tools.] On this site students learn to verify that solutions to inequalities are correct. Students can watch video tutorial, look at key vocabulary and attempt practice...

Find a quick, concise explanation of how solve radical equations. Examples are given and clearly explained.