2025 Confidence Counts Contest Rules | Texas Instruments
...gy division (“TI” or “Sponsor”), with a place of business at 13532 N. Central Expressway, Dallas, TX 75243, and with a website at http://education.ti.com. The Administrator of the Contest is TI (“Administrator,” and together with Sponsor, the “Contest Entities”). CONTEST PERIOD:The Contest will...https://education.ti.com/en/promotion/confidencecountscontest/rules
Here's Looking At Euclid
Students first use the familiar prime factorization method to calculate the GCD and LCM of two numbers. Second, they apply Euclid’s algorithm, an iterative process for finding the GCD, in conjunction with a formula for the LCM given the GCD. In order to use the algorithm, they must first grasp th...https://education.ti.com/en/activity/detail/heres-looking-at-euclid
Introduction to Absolute Value
In this activity students will explore the definition of absolute value using a number line, plot points to graph y = |x|, and use sliders to perform transformations with absolute value functions.https://education.ti.com/en/activity/detail/introduction-to-absolute-value
The Open Box: An Exploration of Maximum Volume
The students will solve the problem of finding the maximum volume of a box cut from an 18 x 24 cm peice of paper in several ways. The student will actually cut out and form several different boxes. The student will fill the boxes with "starburst" candies and then use their TI-Nspires to analyze...https://education.ti.com/en/activity/detail/the-open-box-an-exploration-of-maximum-volume
Circle Product Theorems
Students use dynamic models to find patterns. These patterns are the Chord-Chord, Secant-Secant, and Secant-Tangent Theorems.https://education.ti.com/en/activity/detail/circle-product-theorems_1
Midsegments of Triangles
In this activity, students will explore the properties of the midsegment, a segment that connects the midpoints of two sides of a triangle. First, students will construct and investigate one midsegment and the relationship of the new small triangle to the original triangle. Then, all three midseg...https://education.ti.com/en/activity/detail/midsegments-of-triangles_1
Interior & Exterior Angles of a Triangle
In this activity, students will measure interior and exterior angles of a triangle and make conjectures about their relationships.https://education.ti.com/en/activity/detail/interior--exterior-angles-of-a-triangle
Constructing Similar Triangles
Students investigate three different methods of constructing similar triangles.https://education.ti.com/en/activity/detail/constructing-similar-triangles
Points on a Perpendicular Bisector
Students will explore the relationship between a line segment and its perpendicular bisector. The concept of a point that is equidistant from two points is illustrated.https://education.ti.com/en/activity/detail/points-on-a-perpendicular-bisector
Basic Trig Transformations- 84
In this activity, students will use the Transformation Application to change the values of parameters in trigonometric functions and to determine the effect that each change has on the shape of the graph. Students will then use this knowledge to write equations for sine and cosine functions.https://education.ti.com/en/activity/detail/basic-trig-transformations_84
Basic Trigonometric Transformations
This lesson involves manipulating sliders to change the values of parameters in trigonometric functions and determining the effect that each change has upon the shape of the graph.https://education.ti.com/en/activity/detail/basic-trigonometric-transformations
Symbolic Math Guide App for the TI-89 Titanium
An excellent tutorial that provides step-by-step transformations for a number of problems from algebra, pre-calculus and calculus.An excellent tutorial that provides step-by-step transformations for a number of problems from algebra, pre-calculus and calculus. Including the following: Simplifying expressions Expanding expressions Solving equations Computing derivatives Computing indefinite integral...https://education.ti.com/en/software/details/en/7E54DC888F25499A8FEE6B5C4802BFC3/89symbolicmathguide
Calculus Tools App for the TI-89 Titanium
The Calculus Tools App allows students to explore calculus concepts more in depth, than can be explored with their TI calculator alone.Students can interactively investigate applications of differentiation and compare numerical integration techniques! This free App allows students to explore calculus concepts more in depth, than can be explored with their TI calculator alone. Explore: Sequences Series Vector ca...https://education.ti.com/en/software/details/en/BD230769676A4CC0A42AFB247D22343D/89calculustools
Epsilon-Delta Window Challenge
Make sense out of the formal mathematical definition of limit.https://education.ti.com/en/activity/detail/epsilondelta-window-challenge
Position, Distance, Velocity
Provide a position function to "drive" the rectilinear (straight line) horizontal motion of an object.https://education.ti.com/en/activity/detail/position-distance-velocity
Solids of Revolution - Disks
Use visual representation of solids of revolution to find the exact volume of the solid.https://education.ti.com/en/activity/detail/solids-of-revolution--disks
Visualizing Solids of Revolution - Washers
Use visual representation of solids of revolution to find the exact volume of the solid.https://education.ti.com/en/activity/detail/visualizing-solids-of-revolution--washers
MVT for Derivatives
The MVT relates the average rate of change of a function to an instantaneous rate of change.https://education.ti.com/en/activity/detail/mvt-for-derivatives
Euler's Method Introduction
Visualize the graph of an approximate solution to a differential equation and estimate a specific value of a solution.https://education.ti.com/en/activity/detail/eulers-method-introduction
Just Move It - IB
In this TI-Nspire activity, the movements of the parent functions f(x)= x2 and f(x)= x3 will be explored.https://education.ti.com/en/activity/detail/just-move-it_ns_ib
Exploring Geometric Sequences
Students explore geometric series by considering the effect of the value for the common ratio and first term using sliders.https://education.ti.com/en/activity/detail/exploring-geometric-sequences_1
Breaking Up is Not Hard to Do
In this activity, students will split rational functions into sums of partial fractions. Graphing is utilized to verify accuracy of results and to support the understanding of functions being represented in multiple ways.https://education.ti.com/en/activity/detail/breaking-up-is-not-hard-to-do_1
Crossing the Asymptote
This lesson involves determining when the graph of a rational function crosses its horizontal asymptote.https://education.ti.com/en/activity/detail/crossing-the-asymptote
Rational Functions
In this activity, students will discover, or re-discover, the connection between a rational function, transformations, and both vertical and horizontal asymptotes.https://education.ti.com/en/activity/detail/rational-functions_1
Comparing Exponential and Power Functions
Students will be able to use various graphical representations to determine which of two functions is greater for large values of x.https://education.ti.com/en/activity/detail/comparing-exponential-and-power-functions