Discovering the Circumcenter and Centroid of a Triangle
The students will find the circumcenter by constructing perpendicular bisectors of the sides of a triangle. They will also find the centroid by constructing the medians of a triangle and discover that the centroid is 2/3 of the distance from each vertex along each median.https://education.ti.com/en/activity/detail/discovering-the-circumcenter-and-centroid-of-a-triangle
Exploring Circle Equations
Students explore the equation of a circle. They will make the connection with the coordinates of the center of the circle and length of the radius to the corresponding parts of the equation. Then, students apply what they have learned to find the equation of the circles in several circular designs.https://education.ti.com/en/activity/detail/exploring-circle-equations_1
Exploring the Black Box of Quadrilaterals
The exploration will begin with students dragging the quadrilateral given to them about the screen. Initially, they will be asked to simply identify the quadrilateral's type by sight. This will require simply a visual recognition of the quadrilaterals parallelogram, rectangle, square, rhombus, ...https://education.ti.com/en/activity/detail/exploring-the-black-box-of-quadrilaterals
Exploring the Formula for Area of a Triangle: How was it Derived?
This activity is designed to be paperless. The entire lesson is written to be placed in the Nspire. Students will explore how the formula for area of a triangle works and why it works, they will also explore altitudes and medians of triangles.https://education.ti.com/en/activity/detail/exploring-the-formula-for-area-of-a-triangle-how-was-it-derived
Exploring Special Right Triangles
In this acvtivity, a 30-60-90 degree triangle is constructed for the student to explore. The student is asked to construct a 60 degree angle to give them an understanding of the construction. They will drag the vertex of the triangle and collect sample data. After they collect the data it is us...https://education.ti.com/en/activity/detail/exploring-special-right-triangles
Circle Geometry: Property of the Segments of Two Chords Intersecting within a Circle
Students will be able to discover the property of two chords segments intersecting within a circle. They will discover the rule about the segments geometrically, numerically, and graphically. Lesson will touch on line of best fit to explore the relationship between the segments of the two chords.https://education.ti.com/en/activity/detail/circle-geometry-property-of-the-segments-of-two-chords-intersecting-within-a-circle
Angles in Polygons
In this activity, students measure interior angles in convex polygons and find the sum of the angle measures. They make and test a conjecture about the sum of the angle measures in an n-sided polygon. Finally, they measure exterior angles in convex polygons, find their sum, and write a proof for ...https://education.ti.com/en/activity/detail/angles-in-polygons_1
The Magic of Central Angles
This activity allows students to investigate the relationship between central angles and the arcs they intercept.https://education.ti.com/en/activity/detail/the-magic-of-central-angles
The Pythagorean Theorem—and More
Students construct a triangle and find all angle and side measures. They practice dragging the vertices to form certain types of triangles, and then they confirm the Pythagorean Theorem for right triangles. Moreover, they discover the types of triangle that occur when c2 a2 + b2 or when c2 > a2 +...https://education.ti.com/en/activity/detail/the-pythagorean-theoremand-more
Tangents to a Circle
Explore properties of tangent lines and how they differ from secant lines.https://education.ti.com/en/activity/detail/tangents-to-a-circle
Special Segments in Triangles
In this activity, students construct medians, altitudes, angle bisectors, and perpendicular bisectors of triangles. They then drag the vertices to see where the intersections of the segments lie in relation to the triangle, and they measure distances to identify relationships. They see that the i...https://education.ti.com/en/activity/detail/special-segments-in-triangles_1
Supertall Skyscrapers
In this activity, students use their handhelds to measure scale drawings of famous “supertall” skyscrapers. They first check that the Sears Tower is drawn to scale and then use their measurements to calculate that scale. Next, they write and solve proportions to find the heights of other skyscrap...https://education.ti.com/en/activity/detail/supertall-skyscrapers
Linear Equation Investigation
Students are given a real-life situation (cost of a birthday party) they must create an algebraic equation, table of values, and a scatterplot of the table that is created. They are asked to explain patterns that they observed in each type of representation and also check their accuracy when cre...https://education.ti.com/en/activity/detail/linear-equation-investigation
Quadratic Unit Activity #5: Scavenger Hunt #1
Students are to use whatever technology they have to take pictures or find images that are quadratic. The images are then put in a .tns file for them to find the equations. You may use my file by deleting the images and inserting your own. If you do not have the capability to do that, I have prov...https://education.ti.com/en/activity/detail/quadratic-unit-activity-5-scavenger-hunt-1
Quadratic Unit Activity #6: Scavenger Hunt #2
Students are to use whatever technology they have to take pictures or find images that are quadratic. The images are then put in a .tns file for them to find the equations. You may use my file by deleting the images and inserting your own. If you do not have the capability to do that, I have prov...https://education.ti.com/en/activity/detail/quadratic-unit-activity-6-scavenger-hunt-2
Points & Lines & Slopes (Oh My!)
In this activity, students will use coordinates to better understand that relationship, as well as the relationship between coordinates of points and their quadrant locations, slopes and y-intercepts, and parallel and perpendicular lines.https://education.ti.com/en/activity/detail/points--lines--slopes-oh-my_ns_ib
Perpendicular Slopes
Students investigate the 'negative reciprocal' relationship between the slopes of perpendicular lines. The final phase of the activity is appropriate for more advanced students as they are led through an algebraic proof of the relationship. Optional geometric activities (problems 5 and 6 of the ....https://education.ti.com/en/activity/detail/perpendicular-slopes
Applications of Equations
Students will apply equations to a real-world problem about the number of people attending a museum. They will study the parts of an equation that represents the situation. Then, students will use a dynamic model to find the solution to the equation and interpret what the result means in the real...https://education.ti.com/en/activity/detail/applications-of-equations
Inscribed Angles
Students use animation to discover that the measure of an inscribed angle is half the measure of its intercepted arc, that two angles that intercept the same, or congruent, arcs are congruent, and that an angle inscribed in a semi-circle is a right angle. They then discover that the opposite angl...https://education.ti.com/en/activity/detail/inscribed-angles_1
Understanding Slope
Make connections between the sign of the ratio of the vertical and horizontal change as they relate to the sign of the slope.https://education.ti.com/en/activity/detail/understanding-slope
Pi and Precision
Students will collect the measurements of circumference and diameter for four objects in their group. (Cup, Can, Mint Candy, and a Coin) They will then investigate the accuracy of their data colletion using a numerical table and a scatter plot. Students must observe how closely their measurements...https://education.ti.com/en/activity/detail/pi-and-precision
Using Sliders and Parameters in Linear Functions
Students will have the opportunity to see the impact of the slope parameter m on a graph of a line in slope-intercept form by using a slider or by changing the values of the parameter. They will have the same opportunity to manipulate b. Questions follow to determine the degree to which the stude...https://education.ti.com/en/activity/detail/using-sliders-and-parameters-in-linear-functions
Chicago Chase Activity
In this activity, students will predict qualifying speeds and tire wear.https://education.ti.com/en/activity/detail/chicago-chase-activity
Chirp, Jump, Scatter
In this activity, students will find a best fit line for data graphed as scatter plots. Applications of linear relationships provide motivation for students and improve their skills and understanding of finding the equation of a line from two known points. Movable lines make this activity approac...https://education.ti.com/en/activity/detail/chirp-jump-scatter_1
Recipe: Unit Rate
Students look at unit rate in a real-world context. They will use ratios to create points, plot them, and determine the mathematical relationship for the plotted points. Then, they will predict other points based on the relationship determined.https://education.ti.com/en/activity/detail/recipe-unit-rate