Triangle Congruence with Activity Center
When the activity is started in Navigator, students receive a diagram on their calculators with 6 regions representing the possible answers to a triangle congruence problem. The teacher displays a pair of triangles on the overhead projector or whiteboard and students move their cursor to the regi...https://education.ti.com/en/activity/detail/triangle-congruence-with-activity-center
Triangle Inequalities
In this activity, students will discover the Triangle Inequality Theorem and explore the possible lengths of the third side of a triangle given the other two side lengths. Students will also classify the type of triangle as acute, obtuse, or right using the Pythagorean inequalities.https://education.ti.com/en/activity/detail/triangle-inequalities_1
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/triangle-inequalities_2
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/rotations-in-the-plane
Triangle Inequality
In this activity the students will use Cabri Jr. to investigate the Triangle Inequality Theorm and make conjectures about their findings.https://education.ti.com/en/activity/detail/triangle-inequality
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/triangle-inequality-theorem_1
Triangle Midsegment Theorem
Students will use Cabri Jr. to discover that the midsegment of a triangle is parallel to the third side and half the length of the third side.https://education.ti.com/en/activity/detail/triangle-midsegment-theorem
The Tangent Ratio
In this activity students explore the tangent ratio. Students construct a right triangle using perpendicular lines, and a line that forms the hypotenuse of the triangle. When students construct the hypotenuse line it is very important that the second point that forms the line is not on the perpen...https://education.ti.com/en/activity/detail/the-tangent-ratio
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/rotations-in-the-plane--cabri-jr-interactive
Transformational Puppet
This activity is designed to reinforce the concepts of reflections and translations by having the students create a virtual puppet using Cabri Jr. As they construct their puppets, students will reinforce their understanding of reflections and translations by making predictions about the location...https://education.ti.com/en/activity/detail/transformational-puppet_1
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/ratios-in-right-triangles
Reflecting a Triangle in the Coordinate Plane
In this activity, students use the drawing and measurement tools of Cabri™ Jr. to blend coordinate geometry with drawing tools. They visualize symmetry and reflect a point across the y-axis. NCTM Geometry Standards: Specify locations and describe spatial relationships using coordinate geometry a...https://education.ti.com/en/activity/detail/reflecting-a-triangle-in-the-coordinate-plane
Does Your Euler Line "Wiggle"?
The students will construct an Euler line and demonstrate it is an Euler line by "wiggling" the triangle to guarantee the correct centers remain on the line.https://education.ti.com/en/activity/detail/does-your-euler-line-wiggle
Reflections
This activity will let students understand the concept of reflection.https://education.ti.com/en/activity/detail/reflections
Reflections in the Plane
Students' will learn how to perform a reflection using the Cabri™ Jr. application, and will explore the properties of reflections. This activity will extend the concepts of reflection to the coordinate plane.https://education.ti.com/en/activity/detail/reflections-in-the-plane
Simple Constructions
In this skill activity, students will use the Constructions Tools Menu in Cabri™ Jr. to contruct a parallelogram. They will also construct an altitude, an angle bisector and a median of a triangle.https://education.ti.com/en/activity/detail/simple-constructions
Easy Programming of geometry formualas
Area, surface area, premiter, volume, you get the catch. All done so the student only has to input one or two numbers.https://education.ti.com/en/activity/detail/easy-programming-of-geometry--formualas
Special Parallelograms
In this activity, students will study special types of parallelograms like rhombus and rectangle, and investigate properties related to their diagonals.https://education.ti.com/en/activity/detail/special-parallelograms_1
NUMB3RS - Season 3 - "Hardball" - Is It for Real
In "Hardball," an amateur mathematician uncovers an equation that uses baseball statistics to identify which players are using performance enhancing substances. By analyzing player performance, he is able to determine when an athlete began using a performance enhancing substance. Students will us...https://education.ti.com/en/activity/detail/numb3rs--season-3--hardball--is-it-for-real
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/evaluating-the-products-of-chords-of-a-circle
Experimentally Calculating Pi
Because the diameter of a circle is related to the circumference of a circle, we can find this constant relationship by measuring several lids and fitting a regression line to the data. The slope of this line is pi. This is a great activity to allow students to discover that Pi is the relations...https://education.ti.com/en/activity/detail/experimentally-calculating-pi
Special Midpoint Quadrilaterals
Midpoint Quadrilaterals are quadrilaterals that are formed when consecutive midpoints of a quadrilateral are connected. This activity will use Cabri® Jr. to investigate what properties an exterior quadrilateral has if its midpoint quarilateral has some special properties of its own.https://education.ti.com/en/activity/detail/special-midpoint-quadrilaterals
NUMB3RS - Season 3 - "Finders Keepers" - The Leaf Drops
In "Finders Keepers," a world-class racing yacht sinks in the ocean. The NSA has the exact location where its homing beacon shut down and assumes that is where the ship sank. The NSA is stumped when they cannot find the yacht at this location because they assumed the boat sank directly to the bot...https://education.ti.com/en/activity/detail/numb3rs--season-3--finders-keepers--the-leaf-drops
Explore Parallel and Perpendicular Lines
Students will use a graphing calculator to explore graphs of parallel and perpendicular lines. Students will find that parallel lines have the same slope and different y-intercepts and that the slopes of two perpendicular lines are opposite reciprocals of each other. This Technology Lab accompa...https://education.ti.com/en/activity/detail/explore-parallel-and-perpendicular-lines
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/similar-triangles-and-proportions