Students broaden their outlook on geometry in their everyday environment. They explore the properties of parallel lines and parallelograms and discover ways to prove the existence of parallel lines and discuss the concept of parallel lines.

Students collect statistical data.  In groups, students play a dart game and then determine the distance between darts.  They collect the data and plot the information on a coordinate plane.  They identify the mean and the...

Students apply properties of right triangles to solve problems. In this geometry lesson, students identify axioms and theorems using examples.

Students observe the physical characteristics of birds and identify birds found in their village. They describe characteristics, behaviors and habitats of local birds in this series of lessons.

Students explore many of the basic properties of matter including atoms, ions, elements, molecules, and density. The class explores an interactive flash-animated Web site to answer questions and clarify misconceptions they might have had...

Learners analyze characteristics and properties of two- and three-dimensional geometric shapes and develop mathematical arguments about geometric relationship

Middle schoolers use a Factor Board game to identify the properties of prime, composite, abundant, deficient and perfect numbers. The game is comprised of the numbers from 1 to 30 placed in a 5 by 6 grid. Pupils figure out they can score...

Eleventh graders explore quadratic equations.  In this Algebra II instructional activity, 11th graders use Geometer’s Sketchpad to explore the properties of quadratics and the connections with polynomials and linear equations. ...

In this Geometry worksheet, 10th graders solve problems involving the properties of a regular pyramid.  The two page worksheet contains a combination of seven multiple choice and free response questions.  Answers are...

Students investigate nets as they relate to volume and area. In this geometry lesson, students use nets as a visual to deepen their understanding of surface area and volume of objects. They make conjectures about different objects and...

Learners show their knowledge of properties of objects as it pertains to sorting and creating patterns. In this food pyramid power lesson, students show their ability to use whole numbers in different representations by appling...

Students match definitions with vocabulary words and learn basic facts about matter. Then, they see how to determine the physical characteristics of matter. They determine the mass, volume, and density of objects using appropriate tools...

Third graders investigate the commutative properties of multiplication and focus upon the setting of cubes in the correct patterns to solve problems. They differentiate between numbers that have multiple factors and prime numbers....

Ninth graders explore linear equations.  In this Algebra I lesson, 9th graders investigate how different equivalent equations can be used to describe any given line.  Students explore how to change equations to equivalents...

Students creating chords intersection using circles. In this geometry instructional activity, students create visuals of chords ad their properties using Cabri technology. They measure the chords and explore the relationship among chords.

Students make conjectures of intersecting circles. For this geometry lesson, students observe circles and their position in space. They investigate and observe two and three dimensional objects.

Learners investigate exponential decay.  Students explore the biological half-life of Cesium-137.  Learners investigate the Goiania Accident of 1987 which is considered one of the worst incidents in the history of the Atomic...

Student sinvestigate the area and perimeter of polygons. They differentiate between similar and congruent polygons.. They identify the ratio and proportions of the sides and angles of polygons.

Young scholars solve systems of equations with radical expressions. After reading real life situation, they translate the problem into algebraic expressions. As a class, students solve quadratic equations and inequalities by graphing...

Young scholars calculate the distance from the vertex of a triangle to the center. In this geometry lesson, students find the shortest distance between a point and the vertex of a triangle. They relate this concept of distance to the...

Students define keywords that are important to solve problems. In this geometry lesson, students find the arc length and angle of a circle. They convert between radians and degrees.

Students define trapezoids and their shapes. In this geometry lesson plan, students calculate the area of a trapezoid and a parallelogram. They use Cabri software to make investigations.

Tenth graders find the incenter of a triangle. In this geometry instructional activity, 10th graders define the way to create an incenter with an angle bisector. They differentiate between incenter and incircle.

Students find the orthocenter of a triangle. In this geometry lesson, students identify where the altitudes meet in a triangle. They use Cabri software to explore acute, obtuse and right triangles.