How many ways can you make the number 124 using only tens and ones? Use a task that prompts young mathematicians to make 124 in as many ways as possible.

Here's your chance to save the world. The eighth lesson in a 25-part Energy Systems and Solutions unit has young scientists come up with ideas for individual or group projects. They identify ways to solve the energy crisis. Hope they...

Don't waste any more energy trying to find a great resource on energy. The third installment of a 25-part Energy Systems and Solutions unit focuses on energy use in pupils' lives. They consider how their daily routines consume energy and...

Protect the world from energy depletion—join the Energy Intelligence Agency. Using a set of cards, pupils distinguish between correct and incorrect information regarding energy use in the United States. They analyze graphs and diagrams...

You won't want to flush a great lesson down the drain! An intriguing resource asks learners to predict the number of sheets of toilet paper on a roll. Presented with the dimensions of the roll and one sheet of paper, scholars make...

What does it take to be a great negotiator? Learners discover the factors that affect the negotiation process through group discussion and brainstorming. An installment in a series of peacebuilding activities compares the needs and wants...

Here's a new meaning to the expression throwing away money...a carpet of coins! An intriguing lesson requires calculations to determine the coin that would be the cheapest option, but it's a little tricky. The cost of the coin...

Ever feel like you're headed up the down escalator? Don't let your pupils get stuck in that rut! Practice writing equations to solve a problem using an engaging lesson. A video presents information that allows learners to determine how...

Complex fractions and trigonometric expressions combine to create a challenging task ... as if they aren't challenging enough on their own! The task challenges individuals to consider the range of possible values when substituting in the...

Learners create patterns in a table to mimic the function of an electronic spreadsheet. The result is a table that creates an addition table for decimals in intervals of one-tenth. While creating the pattern, pupils must thoroughly...

What do a line and an ellipse have in common? Maybe zero, one, or two points! Learners consider the equation of an ellipse and a line to determine if their graphs have any shared points. They then write a system of equations, including...

What came first, pedestrian one or pedestrian two? Scholars consider a problem scenario in which two people walk at different rates at different times. They must decide who reaches a checkpoint first. Their answers are likely to surprise...

Celebration time! The final unit in a 10-unit series asks learners to review their work and assess their progress. They complete another YOU! Scale and ME! Scale worksheet and compare the results with the worksheets they created at the...

Learners demonstrate their ability to operate with rational numbers through a five-question assessment that includes questions ranging from simple operations with integers to solving two-step equations with rational coefficients.

The ninth part in a 25-part series emphasizes the importance of using properties of operations in evaluating sums and differences of rational numbers. Pupils solve problems and provide justifications for each step.

If you use a fabulous lesson plan, then your pupils can become fabulous at solving equations. The 24th installment of 25 incorporates the use of if-then statements to illustrate the properties of equality used in solving two-step linear...

Discover the difference between the capacity of a container and its volume. The 25th part of a 28-part series presents problems that require pupils to determine the amount of liquid a prism can hold. Learners must take into account the...

Connect division with multiplication through the use of models. Groups solve problems involving the division of a whole number by a fraction using models. The groups share their methods along with the corresponding division and...

Eighth graders create solutions with 5 different densities. In this chemistry lesson, 8th graders analyze the density of solutions stacked on top of each other. They document their data through graphing. This assignment requires 4 class...

Students relate solution concentration and saturation to color and compare methods of changing value and color intensity with paint solutions.

In this solubility worksheet, students determine which solute will be more soluble in the solvent listed. Students complete 7 matching and 3 problems to solve.

In this solutions activity, students determine the boiling points and melting points of solutions. Students calculate the effective molality of a solute. This activity has five problems to solve.

Eighth graders use their creative and critical thinking skills to find useful solutions to current and future problems concerning the destruction of archaeological sites and artifacts.

In this mixtures worksheet, students brainstorm the problems and possible solutions of how to separate mixtures. This worksheet is a graphic organizer.