Properties of the Centers of a Triangle
Students investigate the sum of the measures of the interior angles of a triangle. This activity explores interior angles, and their relationship with the exterior angles of a triangle.https//education.ti.com/en/activity/detail?id=58DA9ADD423E456BA199BA45F56CD732
SSS Triangle Congruence
Students will: 1. Construct a triangle and measure its sides and angles. 2. Construct a second triangle with corresponding sides equal in length. 3. Try to alter the properties of their construction by moving the vertices.https//education.ti.com/en/activity/detail?id=038121D8F2EC4D12A18892322CABF6FE
Properties of Parrallelograms
Properties of Parrallelogramshttps//education.ti.com/en/activity/detail?id=CFDD634015F8447482C158EE07818D52
Properties of Quadrilaterals
This activity focuses on the properties of special quadrilaterals.https//education.ti.com/en/activity/detail?id=5932F8D04DE645B2AD6A6B575A0C1277
Similar Triangles and Proportions
In this activity, students will investigate the relationship among the similar triangles formed when a segment is constructed parallel to one side of a triangle. They will explore the various ratios that exist between the lengths of the sides of similar triangles.https//education.ti.com/en/activity/detail?id=271E3F97B1B74D46895AA877DEF706FE
Segments Formed by Intersecting Chords, Secants, and Tangents
This activity is designed to help students discover several important theorems concerning lengths of segments formed by intersecting chords, secants, and tangents.https//education.ti.com/en/activity/detail?id=B75374C18CF640F791EEEABE7BD8E45C
Perpendicular Bisector Theorem
This activity uses distance measures to investigate the relationship between a point in the plane and the distance to the endpoints of a segment. Students will investigate the implication these relationships have for the position of the point in the plane.https//education.ti.com/en/activity/detail?id=091C6399FE474519932E8172DA15488B
Shortest Distance Between Points and Lines
This activity investigates concepts such as the shortest distance between two points in a plane, and the shortest distance between a line and a point not on the line. The analytical explanation of these concepts is supported with visual illustrations.https//education.ti.com/en/activity/detail?id=B30614A1E66D4DD69715D19F105A0F1E
Rotations in the Plane - Cabri Jr: Interactive
In this activity, you will explore the invariant properties of rotations and the results of rotations in the coordinate plane.https//education.ti.com/en/activity/detail?id=01A161A0A75A43379E54177BDB01852D
Ratios in Right Triangles
The study of properties of right triangles is a major topic in mathematics. In this activity, you will investigate three common right triangle trigonometric ratios.https//education.ti.com/en/activity/detail?id=92FCF29DC7174762AB86EB3C7F5DB410
Rotations in the Plane
In this activity, students will explore the properties of rotations and the relationships between the original and image figures.https//education.ti.com/en/activity/detail?id=1752BB112B564CB3B0E619C3DD1BB885
Rotations in the Plane with Cabri Jr.
A rotation is a transformation that turns a figure a certain number of degrees about a certain point. This activity explores the properties of rotations and the realationships between the original and image figures.https//education.ti.com/en/activity/detail?id=F50BB5CBEB604AE6A8470B373F634C6B
Test for Parallelograms
Test for Parallelogramshttps//education.ti.com/en/activity/detail?id=CBCA3B6D7B1145B791B0A5578A542085
Triangle Inequalities
This activity will help students visualize the properties of triangles stated in the theorems. By dragging the vertices, the students can see that the properties hold regardless of the size of the triangles and which sides are the longest or shortest.https//education.ti.com/en/activity/detail?id=B1E68A07B24148629FAAAB6B3D09576A
Triangle Inequality Theorem
In this activity, students will explore the concepts underlying the Triangle Inequality Theorem by comparing side lengths and angle measures of a triangle. They will use an interactive construction to see why this theorem is true.https//education.ti.com/en/activity/detail?id=C9080872B24646428D3658FB5EAB313E
Midpoint of a Segment
Students review the basic geometry definitions of segment and midpoint, and learn to use drawing and measurement tools. They explore changes in measurements as the figure is altered. NCTM Geometry Standard covered: Analyze characteristics and properties of 2- and 3-dimensional geometric shapes a...https//education.ti.com/en/activity/detail?id=802F34E1DCCA4CB3A27459615B9B15BF
Midsegments of a Triangle
In this activity, students will construct midsegments of a triangle, and look to formulate statements that appear to be true about the construction. They will form a midsegment triangle and compare the properties of the triangles formed.https//education.ti.com/en/activity/detail?id=1C4A66608D7F44549E7F1A4085BF4470
Midsegments of Quadrilaterals
In this activity, students will extend their understanding of midsegments by investigating the midsegments of a quadrilateral and the midsegment quadrilateral.https//education.ti.com/en/activity/detail?id=827E21A72C604A80AFE4A239D3B1E67D
Got Complements? with Cabri Jr.
Use the Axes and Measure Angle tool to explore and calculate complementary angles.https//education.ti.com/en/activity/detail?id=C13BAB615920423BB1CDCED69BB4D347
NUMB3RS - Season 2 - "Bones of Contention" - Location! Location! Location!
In "Bones of Contention," Charlie talks about Voronoi regions associated with fast food restaurants. The goal of this activity is to investigate and construct Voronoi diagrams with 3 or 4 sites.https//education.ti.com/en/activity/detail?id=24AF274CF08E4BF1B89E30C2DE3F3B77
Got the sum of remote interior angles equal to the measure of the exterior angle? with Cabri Jr.
Draw a triangle with exterior angle. Measure the exterior angle and each remote interior angle. Use the Alpha hand to check that the sum of the remote interior angles is always equal to the exterior angle.https//education.ti.com/en/activity/detail?id=6669E5F5FD4C48A4B9777F8F44594327
Angles of a Triangle
In this activity, students investigate the sum of the measures of the interior angles of a triangle. They will explore interior angles, and their relationship with the exterior angles of a triangle.https//education.ti.com/en/activity/detail?id=A519B8D413744C7CBE9453209DB5344B
Angles of a Triangle
In this activity, students will measure angles and investigate the relationships between interior and exterior angles of a triangle. They understand the definition of interior angles, exterior angles, adjacent angles, supplementary angles, and remote interior angles.https//education.ti.com/en/activity/detail?id=2B7C24CC288D4C7FAB0EF43B6A6CE55B
Angle Bisectors and Medians of Quadrilaterals
In this activity, students will construct angle bisectors and medians in quadrilaterals and explore the properties that appear to be true for four-sided figures. They may find it necessary to review the definitions and properties of special quadrilaterals in order to construct the figures.https//education.ti.com/en/activity/detail?id=617E521133644964A5CB13F999D71039
Evaluating the Products of Chords of a Circle
In this activity, the students will investigate if two chords intersect in a circle, then the products of the measures of the segments of the chords are equal.https//education.ti.com/en/activity/detail?id=108AB1DCAED94E3388F0138229767A23