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Midpoint of a Segment

For Teachers 9th - 12th Standards
Learners revisit midpoint and segments by graphing on the TI or computer. This activity can be done with pencil and paper, but is more interactive if it is done on a TI-navigator.
Lesson Plan
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Exploring the Centroid of a Triangle

For Teachers 9th - 12th Standards
Pupils examine the centroid of a triangle as they use Cabri Jr. to construct a triangle and its medians. The dynamic nature of the software allows learners to measure the lengths of the segments in the triangle and conjecture and verify...
Worksheet
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Planet Earth

For Students 5th - 8th
In this Earth activity, students review 13 terms associated with the Earth's rotation, revolution, and orbit. Students find the terms in a word search and then fill in the term next to its definition.
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Surveying our First President

For Teachers 6th - 8th
Middle schoolers act as surveyors. In this George Washington lesson, students read transcriptions from Washington's surveying journal and then try surveying skills on their own.
Lesson Plan
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Kure Waste Chase Game Lesson

For Teachers 6th - 10th
Students work together to identify marine debris. They explain the effect of the debris on various ecosystems. They draw different types of ocean currents as well.
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How to Hide in the Ocean

For Teachers K - 8th
Students observe the advantages of camouflage. They design a well camouflaged fish of their own.
Lesson Plan
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Modeling Mania

For Teachers 4th - 5th
Students describe techniques helpful in solving spatial problems which utilize the notion that a model is a simplified version of something complicated. They utilize methods such as sketching or drawing possible solutions to a problem.
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Design a Parachute

For Teachers 6th - 8th
Students engage in a discussion about what a parachute is and how it works. They create a parachute using different materials that they think will work best. The students test their designs, which will be followed by a class discussion...
Lesson Plan
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Sea Turtles Underwater

For Teachers 4th - 6th
Students discuss different types of sea turtles. They talk a about the characteristics of sea turtle anatomy. Students pretend to look over the edge of a boat in the ocean. They pretend to see a sea turtle. Students create their artwork...
Lesson Plan
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Circumscribing a Circle About a Triangle

For Teachers 9th - 12th Standards
Pupils circumscribe a circle about a triangle. They construct a triangle using Cabri Jr and then circumscribe it. They then use knowledge of perpendicular bisectors and circumcenters to locate the center of the circle and then...
Lesson Plan
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Perpendicular Segments in a Circle

For Teachers 9th - 12th Standards
High schoolers explore the concept of circles as they construct a circle using a program such as Cabri Jr. Learners construct a chord and a diameter that are perpendicular, then measure the bisected chord and notice that both sides of...
Lesson Plan
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Perpendicular Bisector of a Line Segment

For Teachers 9th - 12th Standards
High Schoolers investigate the perpendicular bisector of a line segment. They use Cabri Jr. to construct the perpendicular bisector of a segment. The dynamics capabilities of Cabri Jr. allow your learners to observe the lengths of the...
Lesson Plan
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Investigating the Slopes of Parallel and Perpendicular Lines

For Teachers 9th - 12th Standards
High schoolers investigate parallel and perpendicular lines. They use Cabri Jr. to construct and explore the relationships between the slopes of parallel and perpendicular lines. The drawing and measurement tools available with Cabri Jr....
Lesson Plan
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Measuring Angles in a Quadrilateral

For Teachers 9th - 12th Standards
High schoolers explore quadrilaterals in this geometry lesson. They will draw a quadrilateral, measure the angles, and find the sum of the measures of the interior angles using Cabri Jr. The interactive capabilities of Cabri Jr. allow...
Lesson Plan
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Exploring the Orthocenter of a Triangle

For Teachers 9th - 12th Standards
Young mathematicians explore the concept of triangles as they construct altitudes of triangles to find the orthocenter. Learners construct their triangles using Cabri Jr. on their graphing calculators and find that the altitudes of a...
Lesson Plan
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Inscribing a Circle in a Triangle

For Teachers 9th - 12th Standards
Pupils investigate inscribing a circle in a triangle. They use Cabri Jr. to draw a triangle, locate the incenter, and use the distance from the incenter to a side of the triangle to inscribe a circle. The dynamic nature of the geometry...
Lesson Plan
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Investigating Segments in a Triangle

For Teachers 9th - 12th Standards
Pupils investigate segments in a triangle by constructing a triangle using Cabri Jr. They construct segments within the triangle that lie on the midpoints of the triangle's sides. Learners then compare the slope of base of the triangle...
Lesson Plan
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Investigating Segments in a Right Triangle

For Teachers 9th - 12th Standards
High schoolers explore the concept of right triangles as they construct a right triangle using Cabri Jr. Learners find the midpoint of the hypotenuse and construct a line from the midpoint to the vertex of the right angle. They then...
Lesson Plan
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Investigating Lengths of Segments in a Triangle

For Teachers 9th - 12th Standards
Pupils explore the midsegment of a triangle in the geometry lesson. They draw and measure the segment joining the midpoints of the two sides of a triangle and compare its length to the length of the third side of the triangle. The...
Lesson Plan
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Measuring Angles in a Triangle

For Teachers 9th - 12th Standards
High schoolers investigate the sum of the measures of the angles of a triangle. They draw a triangle and measure the interior angles. Using Cabri Jr., learners find the sum of the measures of the interior angles. The lesson provides an...
Lesson Plan
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Castles and Cornerstones

For Teachers 2nd - 4th
Students become familiar with the style of architecture of medieval times.  In this architecture activity, students design a model of a medieval castle including its cornerstone. Students understand scale in their representation.
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Camouflage: A Study of Stealth and Survival

For Teachers 2nd - 5th
Students study insect camouflage. In this organisms lesson, students design and create their own 3D insect models to blend into a habitat. Students write a paragraph about the camouflage their insect has and explain how their insect is...
Lesson Planet Article
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Beyond Pinch Pots: Art Lesson Plans with Clay

For Teachers K - 3rd
Students use creative problem solving as they construct with clay in art lesson plans.
Lesson Plan
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Math Mouth!

For Teachers 4th - 6th
Students examine and discuss math vocabulary. They participate in various games involving the math vocabulary. Use this as a supplement.

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