After completing a task involving examining the ratio of areas of triangles and circles in a given figure, scholars examine sample responses to identify other strategies they could use to solve the problem.

Circles are the foundation of many geometric concepts and extensions - a point that is thoroughly driven home in this extensive unit. Fundamental properties of circles are investigated (including sector area, angle measure, and...

What did the triangle say to the circle? You're pointless! Class members will get the point when they investigate relationships between side lengths of a triangle using the Triangle Inequality Theorem. Pupils then create an...

Pupils calculate the revolution and circumference of circles. In this calculus lesson, students derive the formulas for their given shape. They use the d=rt to calculate the distance and rate of travel.

Students explore the globe. In this globe skills lesson, students use their knowledge of latitude and longitude to respond to questions regarding Christopher Columbus's maiden voyage to the Americas.

Students explore population and come to understand how it changes over time. For this census lesson, students discover what population is and how it changes as they participate in age-appropriate activities.

Students list environmental problems they are familiar with and check the ones they think affect the polar regions, and they research and answer questions about environmental issues affecting the polar regions. Students discuss their...

Compare surface temperatures when the solstice occurs in the different hemispheres. Young scientists draw conclusions from their investigation of data collected using spreadsheets and a globe.

Students record their daily activities and graph the results using the educational software program called Inspiration. This lesson is intended for the upper-elementary classroom and includes resource links and activity extensions.

Students review the characteristics of the planets and their moons. Using the internet, they research the relationship between the Earth and its moons. They take a template of the moon and draw craters of different colors to present to...

Students investigate gold. In this gold panning lesson plan, students demonstrate the process of mining through an experiment using two boxes of sand. Students design a safe way to mine gold.

Fifth graders recognize shape and number patterns. In groups, 5th graders use strategies to find patterns. They extend the patterns and give explanations as to how they found the pattern. Students use the computer and the hundreds...

Students practice their math skills in determining the water/land proportions of the Earth. Using globes, they locate the seven continents and oceans and determine which covers more space. They use this information to participate in...

Students trace how weather patterns generally move from west to east in the United States.

Students view and discuss a demonstration of how gold is mined and panned. They design and create a tunnel that has reinforcements to withstand collapse.