Hey, Ortho! Whats Your Altitude?
In this activity, students will explore the altitudes of a triangle. Students will discover that the altitude can be inside, outside, or a side of the triangle. Students will discover that the altitudes are concurrent. The point of concurrency is the orthocenter. Students should discover the rela...https://education.ti.com/en/activity/detail/hey-ortho-whats-your-altitude
The Letter Product Game
This activity will encourage students' powers of deduction through a word game. This will allow a review of factoring integers. A simple extension allows a classroom discussion that will evolve into the Zero Product Theorem, essential to the technique of solving polynomial equations by factoring.https://education.ti.com/en/activity/detail/the-letter-product-game
Investigating Angle Bisectors
Students will determine that any poin on the angle bisector is equidistant from the sides of the angle.https://education.ti.com/en/activity/detail/investigating-angle-bisectors
Returns on a Share of Stock
In this activity, students will determine the internal rate of return of the cashflows associated with the stock purchase, dividends, and sale. They will carry out explorations by varying the selling price of the stock and examining the impact on the rate of return.https://education.ti.com/en/activity/detail/returns-on-a-share-of-stock
Area of a Regular Polygon
This activity has the students derive the formula for finding the area of a regular polygon. Demonstrating the procedure of constructing a regular polygon in front of the class maybe necessary depending on the students prior experiencehttps://education.ti.com/en/activity/detail/area-of-a-regular-polygon
Investigating Lengths of Segments in a Triangle
In this activity, students connect the midpoints of two sides of a triangle, to draw the midsegment of the triangle. They investigate how the length of this segment relates to the third side of the triangle. NCTM Geometry Standard covered: Analyze characteristics and properties of 2- and 3-dimens...https://education.ti.com/en/activity/detail/investigating-lengths-of-segments-in-a-triangle
Investigating Segments in a Quadrilateral
In this activity, students use the tools of Cabri™ Jr to test their knowledge of geometry. They investigate the properties of the shape formed by connecting the midpoints of adjacent sides of a quadrilateral. NCTM Geometry Standard covered: Analyze characteristics and properties of 2- and 3-dime...https://education.ti.com/en/activity/detail/investigating-segments-in-a-quadrilateral
Bonds and Bond Yield to Maturity
In this activity, students will deal with Bonds, that are long-term promissory notes, specifying that the creditor will receive regular interest payments for the term of the agreement and then receive the face amount of the bond. Students will have to estimate the market value of bonds and explor...https://education.ti.com/en/activity/detail/bonds-and-bond-yield-to-maturity
Investigating Segments in a Right Triangle
In this activity, students review definitions of terms such as right triangle, hypotenuse, midpoint, vertices, and equidistant. They also discover an important characteristic of the midpoint of the hypotenuse. NCTM Geometry Standard covered: Analyze characteristics and properties of 2- and 3-dime...https://education.ti.com/en/activity/detail/investigating-segments-in-a-right-triangle
Investigating Segments in a Triangle
In this activity, students investigate the midsegments of a triangle as in the previous activity. They continue to explore these segments and extend their understanding of the relationships that exist between the slopes of lines containing the segments. NCTM Geometry Standard covered: Analyze ch...https://education.ti.com/en/activity/detail/investigating-segments-in-a-triangle
Amortization Tables
In this activity, students carry out financial computations, involving amortization. Students will prepare amortization tables indicating principal payments, interest payments, and the balance on a loan for each time interval.https://education.ti.com/en/activity/detail/amortization-tables
Investigating the Slopes of Parallel and Perpendicular lines
In this activity, students investigate how equations of parallel and perpendicular lines relate to each other. They use the drawing and measurement tools of Cabri™ Jr. to explore the slopes of lines. NCTM Geometry Standards: Analyze characteristics and properties of 2- and 3-dimensional geometric...https://education.ti.com/en/activity/detail/investigating-the-slopes-of-parallel-and-perpendicular-lines
Bisectors
Students investigate the Perpendicular Bisector Theorem and examine its converse. They also explore the Angle Bisector Theorem.https://education.ti.com/en/activity/detail/bisectors
Investigate Perpendicular Bisector
Student activity: Discover that any point on the perpendicular bisector of a segment is equidistant from the endpoints of the segmenthttps://education.ti.com/en/activity/detail/investigate-perpendicular-bisector
House
Students use the Cabri Geometry™ II Plus software to invert, rotate and dilate a figure.https://education.ti.com/en/activity/detail/house
Incenter of a Triangle
In this activity, students observe a special characteristic of the bisectors of the angles in a triangle. They test their conjecture by changing the size and shape of the triangle. NCTM Geometry Standard covered: Analyze characteristics and properties of 2- and 3-dimensional geometric shapes and ...https://education.ti.com/en/activity/detail/incenter-of-a-triangle
Congruent Triangles
Explore the results when a new triangle is created from an original triangle using the SSS, SAS, and ASA sets of conditions for congruence. In doing so, they will use the Cabri Jr. Compass tool to copy a segment and the Rotation tool to copy an angle.https://education.ti.com/en/activity/detail/congruent-triangles_3
Inscribed Angles Intercepting The Same Arc
Students investigate the properties of angles inscribed in a circle. They use the drawing and measurement tools of Cabri™ Jr. to draw and measure certain angles, and establish the relationship between angles that intercept the same arc. NCTM Geometry Standard covered: Analyze characteristics and ...https://education.ti.com/en/activity/detail/inscribed-angles-intercepting-the-same-arc
Inscribing a Circle in a Triangle
In this activity, students bisect the angles of a triangle and find the incenter of the triangle. They find the distance from the incenter to the side of the triangle and use it as radius. With the incenter as the center, they inscribe a circle in a triangle. NCTM Geometry Standard covered: Anal...https://education.ti.com/en/activity/detail/inscribing-a-circle-in-a-triangle
Placement of Lines
Using Activity Center, students will submit equations of lines that are parallel, perpendicular, intersecting but not perpendicular or coincident to the given line. Lines from Activity Center appear both on the screen and the graphing calculator.https://education.ti.com/en/activity/detail/placement-of-lines
Points, Lines and Slopes (Oh My!) - 84
In this activity students will explore the relationship between coordinates of points and locations on the coordinate plane, the relationships of lines with their equations, slopes and y-intercepts, and lastly, the slopes of parallel and perpendicular lines.https://education.ti.com/en/activity/detail/points-lines--slopes-oh-my@84@ib
Constructing Quadrilaterals
In this activity, students will construct different types of quadrilaterals from the quadrilateral hierarchy. This activity asks for constructions based on a minimal definition of the quadrilateral. The activity will reinforce the difference between a construction and a drawing.https://education.ti.com/en/activity/detail/constructing-quadrilaterals
Intersecting Lines and Vertical Angles
In this activity, students visualize and explore the angles that are formed when two lines intersect. By measuring angles formed by intersecting lines, they enhance their understanding of vertical angles, supplementary angles, and a linear pair. NCTM Geometry Standard covered: Analyze characteris...https://education.ti.com/en/activity/detail/intersecting-lines-and-vertical-angles
Constructing the Diameter of a Circle
Given a circle, students will construct a diameter of the circle. They will use the following theorem: In the same circle, if one chord is a perpendicular bisector of another chord, then the first chord is a diameter.https://education.ti.com/en/activity/detail/constructing-the-diameter-of-a-circle
Intro to Circles Terminology
Four questions to introduce the TI-Navigator™ and to assess student understanding of basic terms about circles.https://education.ti.com/en/activity/detail/intro-to-circles-terminology