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Angles and Transversals
Pupils explore the concept of angles and transversals. They construct parallel and non-parallel lines cut by a transversal using Cabri Jr. Learners then determine which angles are congruent and the relationship of angles when two lines...
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Shortest Distance Between Points and Lines
Learners use technology to determine the shortest between two points in a plane. They are required to support their analytic explanations with visual illustrations.
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Angle Bisectors and Medians of Quadrilaterals
Young scholars investigate the properties of quadrilaterals formed by angle bisectors of a given quadrilateral and quadrilaterals formed by the medians of quadrilaterals. This Cabri Jr. lesson provides opportunity for conjecture and...
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Investigating Area Relationships
Learners investigate the area of various figures. They construct triangles and quadrilaterals using Cabri Jr. and discuss the relationships between different angles, side lengths, and figures.
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Midsegments of Quadrilaterals
High schoolers explore the concept of quadrilaterals as they find the midsegments of quadrilaterals using Cabri Jr. on a graphing calculator. They find midpoints, slopes, angles, and distances of lines and angles.
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Rotations in the Plane
Pupils investigate the properties of a rotation as they use technology (Cabri, Jr.) to observe the relationship between the pre-image and the image formed by the rotation. The lesson provides ample opportunity for learners to conjecture...
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Angles of a Triangle
Learners explore the measures of the angles of a triangle in this geometry lesson. They use Cabri Jr. to investigate the sum of the measures of the interior angles of a triangle, and examine the relationships between the interior and...
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Altitude, Median, and Angle Bisector of a Triangle
Learners investigate the special properties of an altitude, a median, and an angle bisector and explore how these special segments divide the area of a triangle. The dynamic nature of Cabri Jr. allows pupils to form and verify conjectures.
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Properties of the Centers of a Triangle
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.
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Similar Triangles and Proportions
Pupils investigate similar triangles and proportions as they make conjectures about the length of sides of similar triangles. For this instructional activity, have your class construct similar triangles using Cabri Jr so that they share...
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Triangle Inequality Theorem
High schoolers investigate the relationship between angle measures and sides of a triangle and the relationships among the three sides of a triangle. The use of technology (Cabri, Jr.) allows learners to make and test conjectures as they...
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Changes in Force, Motion, and Energy
Eighth graders construct various machines and compare the work done by them.
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Geometry: Tessellations
Students create tessellations with computer software while applying their knowledge of reflections, rotations, and translations.
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Robotics
learners identify and research robots in various roles in society, and create robotic arms and multimedia presentation based on their findings.
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Rhinos and M&M's
Students analyze patterns of exponential models by collecting data in paper folding and M&M investigations. They use graphing calculators to create scatter plots that lead to equations for the exponential models. They then apply this...
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Time: Attribute
Young scholars participate in five teacher-led, whole class activities that explore sequences of time and the concept of faster and slower. They sequence school day events, create a book of their daily schedule, put the days of the week...
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The Measurement Man
Students explore the measurements of capacity by constructing a creative project in the shape of a man. The man has body parts that represent different units of measurement and can be used to make conversions. This is highly concrete and...
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Using Ratios
Students study the Golden Ratio and its relationship to Renaissance artists. After exploring proportions and ratios used by Renaissance artists, students create a mix of ten variations of color paint, and record the ratios of primary...
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Squares
Students identify shapes that are squares. In this square lesson, students identify the square items and then sing songs about squares.
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Shapes Sally Snake Can Make Story Book
Students listen to the book Shapes Sally Snake Can Make while they hold their own snake made out of a pipe cleaner. In this shapes lesson plan, students develop their listening skills while the book is read to them, and then they...
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Weather Reporter
Fourth graders generate an oral presentation on the weather. In this weather lesson, 4th graders watch the weather for a week and record the data on a chart. Students give a weather report at the end of the week.
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Decimals and Percents - Part One
Young scholars explore the concept of converting a decimal to a percent. For this conversion lesson, students convert decimals to percents.
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Expanded Form - Ten Thousands
Students explore the concept of writing numbers in expanded form. In this expansion lesson, students write numbers in expanded form.
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Expanded Form - Thousands
Students explore the concept of writing numbers in expanded form. For this expansion lesson, students write numbers in expanded form.