Learners estimate the total number of species in Ecuador using the capture/recapture method. They collect data about each species and act as members of a science expedition to determine the total number of species by using mathematical...

Future mathematicians learn how to evaluate numerical expressions by applying the order of operations. They evaluate similar-looking expressions to see how the location of parentheses and exponents affects the value. 

Sometimes, equality just doesn't happen. Scholars apply their knowledge of solving equations to identify values that satisfy inequalities in the 34th installment of a 36-part module. They test given sets of numbers to find those that are...

Groups of students rotate through five classroom stations to estimate, measure, and record volume, length, weight, mass, and area using both customary and metric measure. They evaluate their data to determine how close their estimates...

Look at climate change around the world using graphical representations and a hands-on learning simulation specified to particular cities around the world. Using an interactive website, young scientists follow the provided...

How many different interpretations of the mean are there? Scholars place numbers on a number line and determine the mean. They interpret the mean as the average value and as the balance point.

Properly teach properties with three activities that allow learners to investigate properties of real numbers. The resource covers the identity properties for addition and multiplication, the inverse property for multiplication, and the...

When van Leeuwenhoek saw cells and single-celled organisms for the first time, he knew these small things were a big deal! Share his discoveries with young learners through a narrated video, model-building activity, and scale study....

Which 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...

Two activities explore the concept of size, especially small sizes down to the nano. Scholars practice determining volume, mass, and density and calculate exponential increases and decreases. They then predict and test the effect of size...

Sort this resource into the Use pile. Scholars investigate attributes of quadrilaterals and then use the results to sort and classify the shapes labeling each figure with their properties to justify the classifications.

Students simulate coal mining with chocolate chip cookies and toothpicks. They investigate the costs associated with mining coal.

Young scholars explain why the number of appliances used today differs greatly from the number used previously. They construct a bar graph to show changes in appliance use over a period of time. They also list appliances that could be...

Students solve real world problems involving area and perimeter in this unit culminating activity.

Students discover the Sieve of Erathosthenes. They explore a method to find all the prime numbers in a group of numbers. Using models, students practice divisibility rules while examining the difference between prime and composite numbers.

Pupils read about and discuss water and how it is used as a resource and how engineers use technology to preserve it. In this water lesson plan, students look at a picture of water treatment and tell what is wrong with the picture.

Sixth graders discover transformations. For this graphing lesson, 6th graders explore visual examples of plotting transformations as they review translations, rotations, and reflections. Students also practice solving problems that their...

Students solve equations with negative numbers. In this addition and subtraction lesson, students review how to add and subtract with positive and negative numbers on a number line. Students discuss the outcomes of adding two negative...

Students solve probability problems. In this fraction and probability lesson, students review how to simplify fractions and learn how to express probability as a fraction.

Young scholars work with prime numbers. In this prime factorization lesson, students review writing numbers in their prime factorization form and solve multiple problems.

Students draw on graph paper. In this geometry lesson, students review types of triangles and quadrilaterals. Students investigate geometric transformations, including translation, rotation and reflection. Students practice each...

Students manipulate integers quickly to get their answers. In this algebra lesson, students play an interactive game as they review basic algebraic operations. They add, subtract, multiply and divide quickly to get the correct answer.

Middle schoolers are introduced to the process of dividing integers. As a class, they review positive and negative numbers and what happens to the real and imaginary numbers when divided. They complete sample problems and a worksheet...

Students use art to express emotion.  In this visual arts lesson, students explore the use of various colors and shapes in an effort to express emotions displayed in the Twelve Labors of Hercules.  Students use the computer...