35 Years of T³™ Mentorship and Community | Texas Instruments
...ate University. Their early efforts were focused on precalculus education. The first Computers and Calculators in Precalculus (C²PC) conference in 1988 welcomed 80 teachers from around the nation to participate in training sessions — the precursor to the T³™ International Conference (T³IC). By...https://education.ti.com/en/bulletinboard/2023/35-years-t3-community-teacher-leader
Summer Reading List for Math Teachers | Texas Instruments
...s” by Nathalia Holt Start off with a bang with this true story about the women “human computers” at NASA’s Jet Propulsion Laboratory in the 1940s and ’50s. Follow the story of how this elite group of young women transformed rocket design, shaped lunar missions, and ushered in a new era ...https://education.ti.com/en/bulletinboard/2023/summer-reading-for-math-teachers
Helping Students Save for Retirement | Texas Instruments
...ding high school students, should be as informed as possible about their retirement savings. Meet Harold Peters. He started investing in the late 1950s and early ’60s, but at that time there were large commissions and fees … sometimes as much as 8% per trade! So, he started to study retiremen...https://education.ti.com/en/bulletinboard/2023/retirement-planning-program
Calculators and Order of Operations | Texas Instruments
... The expression √2X on the TI-82 is understood as √(2X) on the TI-83. Sometimes change for the better is not universally welcomed. Back in 1996, after introducing the “new” TI-83 graphing calculator to workshop participants, I’ll never forget one participant actually groaned out loud w...https://education.ti.com/en/bulletinboard/2023/calculators-and-order-of-operations
Properties of Parallelograms - 1
Students explore the various properties of parallelograms and the necessary and sufficient conditions that guarantee that a quadrilateral is a parallelogram.https://education.ti.com/en/activity/detail/properties-of-parallelograms_1
Tesselations
In this activity students will explore what causes some regular polygons to tesselate. They will explore sketches of regular polygons, measure the interior angles, and test to see whether the shapes tesselate.https://education.ti.com/en/activity/detail/tesselations
The Radian Sector
In this activity, students will explore properties of sectors. Students will derive the formula for the arc length of a sector and the area of a sector.https://education.ti.com/en/activity/detail/the-radian-sector
Secant Angle Investigation
This activity will allow students to discover the relationship between the secant angle and the corresponding central angles.https://education.ti.com/en/activity/detail/secant-angle-investigation
Putting limits on Pi
This activity has the students calculate the perimeter of inscribed and circumscribed regular polygons about a circle and then use the calculated values to determine pi.https://education.ti.com/en/activity/detail/putting-limits-on-pi
Perpendicular Bisector
In this activity, students will explore the perpendicular bisector theorem and discover that if a point is on the perpendicular bisector of a segment, then the point is equidistant from the endpoints. This is an introductory activity, where students will need to know how to change between pages, ...https://education.ti.com/en/activity/detail/perpendicular-bisector_1
3D Parametric
In this activity, students will review the concepts of parametric and polar equations. By using the 3D graphing capabilities of the TI-Nspire handheld, students will be able to extend these ideas to the area of solids of revolution, arc length and kinematics.https://education.ti.com/en/activity/detail/3d-parametric
Positive and Negative Angles and Arcs
Investigate the relationships among the angles of intersection of the two lines and the intercepted arcs using positive and negative angle and arc measures.https://education.ti.com/en/activity/detail/positive-and-negative-angles-and-arcs
Exploring the Geometric Means of a Right Triangle - When the Altitude to the Hypotenuse Is Drawn
Students will explore the concept of geometric mean and solve right triangle problems using geometric mean proportions. A TI-Nspire activity demonstrates interactively the geometric mean relationship, and an activity sheet applies the relationship to solve triangle problem. Most discussions of g...https://education.ti.com/en/activity/detail/exploring-the-geometric-means-of-a-right-triangle--when-the-altitude-to-the-hypotenuse-is-drawn
Cell Phone Towers
In this activity students explore the locus of a point that is located twice as far from a given point A as it is from given point B. The locus is Apollonius circle. Students discover that the locus is a circle and then prove it. The key property: If a ray bisects an angle of a triangle, then it ...https://education.ti.com/en/activity/detail/cell-phone-towers
Lines with Transversals and Angle Pairs
Students will use the TI-Nspire file and record their answers on the Word worksheet. The TI-Nspire file has been created to allow students to explore and measure the relationships of angle pairs with and without parallel lines.https://education.ti.com/en/activity/detail/lines-with-transversals-and-angle-pairs
The Flag Problem
Students explore the area of a triangle with the base being one of the legs of a right angled trapezoid, and an opposite vertex being a point on the other leg of the trapezoid.https://education.ti.com/en/activity/detail/the-flag-problem
The Ladder Problem Revisited
In this activity students explore the locus of mid-point of the hypotenuse of a fixed length geometrically and algebraically and discover that the median a right triangle is equal to half the length of the hypotenuse. Students then prove this property. The problem: A ladder leans upright against ...https://education.ti.com/en/activity/detail/the-ladder-problem-revisited
The Art Project
Students explore the locus of points in the interior of the right angle such that the sum of the distances to the sides of the angle is constant.https://education.ti.com/en/activity/detail/the-art-project
Remote Interior Angles
Students use the handheld activity and questions to explore remote interior angles.https://education.ti.com/en/activity/detail/remote-interior-angles
Solving Systems by Graphing
Explore moving a point to illustrate solving systems of linear equations graphically.https://education.ti.com/en/activity/detail/solving-systems-by-graphing
Quadratic Unit Activity #2: What's the Equation? Quadratic Functions
This is the second activity for the Quadratic Unit. This activity allows students to use sliders to match various quadratic functions in vertex form.https://education.ti.com/en/activity/detail/quadratic-unit-activity-2-whats-the-equation-quadratic-functions
Pledge Plans: An Exploration of Linearity
A brief overlook of slope linearity and how it is applied to graphs and real life situations.https://education.ti.com/en/activity/detail/pledge-plans-an-exploration-of-linearity
Exploring Domain and Range
Explore visual representations of relations to determine their domain and range.https://education.ti.com/en/activity/detail/exploring-domain-and-range
Exploring Graphs of Inequalities
Test ordered pairs to determine if they are part of the solution set to an inequality.https://education.ti.com/en/activity/detail/exploring-graphs-of-inequalities
Exploring Parabolas
Students will explore the parabola by investigating links between its standard equation form and its graph. Students will also discover the axis of symmetry and the vertex of a parabola.https://education.ti.com/en/activity/detail/exploring-parabolas