Exploring the Orthocenter of a Triangle
In this activity, students use the Cabri™ Jr. tools to draw altitudes in a triangle. They construct a line perpendicular to a given line and through a given point. NCTM Geometry Standard covered: Analyze characteristics and properties of 2- and 3-dimensional geometric shapes and develop mathemat...https://education.ti.com/en/activity/detail/exploring-the-orthocenter-of-a-triangle
Exploring Quadratic Data with Transformation Graphing
Students practice with the parameters of the vertex form of the parabola and their effect on the shape of the curve. They use this concept to find a quadratic model. They also use translation and dilation to change the general parabola.https://education.ti.com/en/activity/detail/exploring-quadratic-data-with-transformation-graphing
Give Me a Hand or Leaf Me Alone - TI-83
In this activity, students find the surface area of geometric shapes cut from card paper and relate it to its mass. They use this data to find the surface area of irregularly shaped objects.https://education.ti.com/en/activity/detail/give-me-a-hand-or-leaf-me-alone--ti83
Exploring Platonic Solids
This activity is best at the very beginning of a unit on solids. Students will observe Platonic solids using an interactive website (from the NLVM) projected to the whole class. Students will predict the number of edges, vertices, and faces of the five solids and record their predictions on a Lea...https://education.ti.com/en/activity/detail/exploring-platonic-solids
Handy Reflections
The purpose of this investigation is to: Revise plotting points on the Cartesian plane Use and understand aspect ratios Improve estimation skills Use a spreadsheet or a graphing calculator to draw a graph Learn how to reflect lines and points in the x & y axis.https://education.ti.com/en/activity/detail/handy-reflections
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
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
Constructing Circles
In this activity, students will investigate the construction of circles that pass through a given number of points. They will also investigate the number of points needed to generate a unique circle in a plane.https://education.ti.com/en/activity/detail/constructing-circles
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
NUMB3RS - Season 3 - "Traffic" - Birthday Surprise
Students will study the birthday problem and other similar applications.https://education.ti.com/en/activity/detail/numb3rs--season-3--traffic--birthday-surprise
NUMB3RS - Season 3 - "Finders Keepers" - Barging In
In "Finders Keepers," the body of a diver is found in the ocean. The body is traced to a salvage barge that has a bloody handprint on it. After further investigation, it is discovered that the blood is not from the dead diver, but someone else murdered on the barge. In order to find the other vic...https://education.ti.com/en/activity/detail/numb3rs--season-3--finders-keepers--barging-in
Coordinate Geometry - Circles
In this activity, students investigate the relationship between the coordinates of a point on the circle, radius of a circle, and the values in the equation of the circle.https://education.ti.com/en/activity/detail/coordinate-geometry--circles
Sequence Patterns
Sonya Kovalevsky(1850-1891)was fascinated by infinite sequences. Fill in the spaces to continue the sequences in the attached document.https://education.ti.com/en/activity/detail/sequence-patterns
Circumcenter and Incenter
In this activity, students examine the location of the circumcenter and incenter for different triangles.https://education.ti.com/en/activity/detail/circumcenter-and-incenter
NUMB3RS - Season 2 - "Assassin" - Experimenting with Paper Airplanes
In the episode "Assassin," Charlie and Larry discuss a paper airplane contest and some factors that affect the flight of a paper airplane. Because it is much simpler, a paper airplane can be easily modified and then tested to see how those changes affect its flight.https://education.ti.com/en/activity/detail/numb3rs--season-2--assassin--experimenting-with-paper-airplanes
Radius, Diameter, and Circumference of a Circle
In this activity, students will learn the basic concepts of the circle. They explore the relationship between the diameter and the radius, and between the diameter and circumference of a circle. They also get familiar with the Greek symbol π (pi).https://education.ti.com/en/activity/detail/radius-diameter-and-circumference-of-a-circle
Watching Your Weight - TI-83
In this activity, students examine how moving a weight up along a board affects the downward force on the board. They explore how children with different weights can be balanced on a seesaw.https://education.ti.com/en/activity/detail/watching-your-weight--ti83
Reaction Time
The students will do experiments involving reaction time, and then make a histogram displaying their datahttps://education.ti.com/en/activity/detail/reaction-time
Say What You Mean!
This is a fun activity that has students determining how grades could be adjusted should a curve be given. Students will experiment with lists and stat plots to determine if their adjustments create a line or a curve when plotted on a graph.https://education.ti.com/en/activity/detail/say-what-you-mean
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/midpoint-of-a-segment
Grandparents and Special Friends Day
This lesson was designed for our Grandparents and Special Friends day. It can be used for any visitation day, or an open house. The lesson is designed to review percent of a whole and the sector of the circle representing the percentage. Although circle graphs can be created in a spreadsheet prog...https://education.ti.com/en/activity/detail/grandparents-and-special-friends-day
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/midsegments-of-quadrilaterals
Measuring Angles in a Quadrilateral
In this activity, use an interactive, and investigative approach to determining the sum of the interior angles of a quadrilateral. They use Cabri™ Jr. to draw, measure, and calculate the characteristics of the angles of quadrilaterals. NCTM Geometry Standard covered: Analyze characteristics and p...https://education.ti.com/en/activity/detail/measuring-angles-in-a-quadrilateral
Math TODAY: Ballooning Inside the Box
Using the USATODAY® Infograph, "Ballooning Inside the Box," students will explore geometric relationships using similar triangles. Identifying triangles with two pairs of congruent angles to explore similarity properties of the triangles is an essential part of this activity.Students will learn w...https://education.ti.com/en/activity/detail/math-today--ballooning-inside-the-box
Math TODAY: When a Ruler Isn't Enough
Using the USA TODAY® Infograph, "When a Ruler Isn't Enough," you will explore the geometric relationships in similar right triangles. The altitude to the hypotenuse will create two right triangles that are similar to each other and to the original. Students will determine measurements indirectly ...https://education.ti.com/en/activity/detail/math-today--when-a-ruler-isnt-enough_1