How did an investigation into the causes of the collapse of the Twin Towers, as a result of the 9/11 attacks, inform the construction of the new 1 World Trade Center? That is the central question of a resource that asks class members...

What is the typical length of a yellow perch? Pupils analyze a histogram of lengths for a sample of yellow perch from the Great Lakes. They determine which measures of center and variability are best to use based upon the shape of the...

Can you follow a composition of transformations, or better yet construct them? Young mathematicians analyze the composition of dilations, examining both the scale factor and centers of dilations. They discover relationships for both...

Get kids' heads spinning by challenging them to design a top that will rotate for a minimum of 10 seconds without leaving a 30-cm circle. Groups of learners collaborate through a planning stage, testing stage, and evaluation stage. Some...

Through thoughtful discussion and a read-aloud, scholars challenge gender role stereotypes. Pupils examine pictures and collaborate with their small groups to debunk stereotypes. They explain what gender role stereotypes they know of and...

Eating healthy can be a challenge, especially for people with special dietary needs. After learning about standard nutritional needs for adults, learners take on the role of a dietician and work together to create a menu for one of the...

When mathematical errors happen, part of the learning is to figure out how it affects the rest of your calculations. The activity has your mathematicians solving for the area of a circular pipe and taking into consideration any errors...

Students solve a new math challenge every week. In this math center activity, students explain the process of solving the weekly challenge. Students are assessed on what is included in their challenge notebook. Students earn rewards for...

Learners discover the skills needed to work with the mentally and physically challenged. For this service learning lesson, students create a set of guidelines for working with the mentally and physically challenged.

Students conduct Internet research in order to better understand the concepts of sustainable health design. In this design and architecture instructional activity, students gather data and creat a materials kit that responds to the...

What a find! Here is a lesson, designed to meet sixth grade math Common Core standards, that focuses on the calculation of different measures of center for the scores from a penalty shoot-out competition. An independent...

Scholars explore the California Career Center website to gain insight into future career options. A scavenger hunt challenges pupils to locate multiple tabs and answer questions on a worksheet.

High schoolers investigate properties of the four centers of a triangle and explore a special property of the circumcenter and orthocenter of a triangle. This lesson requires the use of Cabri, Jr.

Geometry students use hinged mirrors to discover that the regular polygons are composed of triangles tessellating around a center point. They sketch triangles on paper models of the regular polygons having 3 to 10 sides and compute the...

The attempts of journalists to verify the events surrounding the shooting of Michael Brown take center stage as individuals analyze three of the initial newspaper accounts of the story. The whole class discussion then focuses...

Construction leads to habitat loss and local wildlife suffers. Scholars must build a reptile egg incubation device that meets many constraints. Various experiments help them discover the chemical reaction needed to reach...

Tenth graders investigate dilations and explore the dilation transformation before investigating the properties of a dilation using Cabri Jr. Young scholars extend the concept of dilatation to the coordinate plane.

Students explore the state of Sub-Saharan Africa. In this geography skills lesson, students examine the work of the Carter Center in Africa as they investigate the strengths and weaknesses of linguistic, tribal, and religious...

Students choose books to preserve for future generations.  Students are given a scenario in which they are allowed to save only five books for future generations.  Students write a persuasive letter in which they try to...

Using Cabri Jr. students construct a circle and determine the equation of the circle they drew by finding the center and the radius. Students use the distance formula to derive the equation of their circle.

Students construct a tower as high as possible that can successfully lean without collaspling. They examine the effect that lowering an object's center of gravity has on the torque produced on an object.

What a festive way to examine what happens to the heart in different gravitational situations! Small groups place a water-filled balloon in different locations (on a table top, in a tub of water, and held in a vertical position), drawing...

Two scenarios are presented for chemistry detectives to decipher. Both require the use of an infrared spectrometer and focus on the examination of polymer materials. In the first, lumps in polyethylene bottles are analyzed. In the...

Discover the result of a sequence of rotations about different centers. Pupils perform rotations to examine the patterns. They also describe the sequence of rotations that performed to reach a desired result in the ninth installment in a...