Angle Sum in Triangles Proof using Rotation and a Parallel Line
This investigation uses Cabri Jr. and a cleaver rotation of a triangle to "prove" that the angles in a triangle add up to 180. This could be used to reinforce triangles and paralled lines as well as introduce the concept of rotating an object.https://education.ti.com/en/activity/detail/angle-sum-in-triangles-proof-using-rotation-and-a-parallel-line
30-60-90 right triangles in Cabri Jr
Students will explore the relationships between the sides of 30-60-90 right triangleshttps://education.ti.com/en/activity/detail/306090-right-triangles-in-cabri-jr
Right Triangle Trig
This is a way to use the TI-Navigator™ to check for an understanding of sin, cos, and tan before you move onto word problems.https://education.ti.com/en/activity/detail/right-triangle-trig
NUMB3RS - Season 2 - "Double Down" - A Bit of Basic Blackjack
In "Double Down," three students are tied up in a money-laundering scheme involving money won in the card game blackjack. In this activity, we discuss a simplified version of blackjack and analyze the probability of winning in various situations. Because cards are drawn from the deck and not re...https://education.ti.com/en/activity/detail/numb3rs--season-2--double-down--a-bit-of-basic-blackjack
NUMB3RS - Season 3 - "Killer Chat" - Stylometry
In "Killer Chat," the FBI has obtained a collection of online chat dialogues from a suspected killer. Charlie proposes he use Statistical Linguistic Analysis to identify the author. The style and language can essentially fingerprint the writing. Stylometry, the practice of applying statistical an...https://education.ti.com/en/activity/detail/numb3rs--season-3--killer-chat--stylometry
NUMB3RS - Season 3 - "Democracy" - No Desk Left Behind
In "Democracy", Charlie calculates the likelihood that five people who knew each other would have died by accident in a two-week period. He estimates that the odds of this are 700 million to 1. To estimate likelihood of an event, a simulation can be used. In this activity, students use a simulati...https://education.ti.com/en/activity/detail/numb3rs--season-3--democracy--no-desk-left-behind
NUMB3RS - Season 2 - "The Running Man" - The Eyes Have It
The FBI is investigating a robbery at the research facility of a large company. The FBI believes that the robbers were employees of the company, because they were able to bypass the iris recognition security scan and gain entrance. However, a security camera was able to capture a partial image of...https://education.ti.com/en/activity/detail/numb3rs--season-2--the-running-man--the-eyes-have-it
NUMB3RS - Season 2 - "The O.G." - Is It Really Rare?
Suppose that historically, a shooting has occurred in Los Angeles an average of once every 6 hours. Suppose that Charlie is interested in the probability of 2 shootings occurring in a given 24-hour period. He could use a Poisson distribution to find that probability.https://education.ti.com/en/activity/detail/numb3rs--season-2--the-o-g---is-it-really-rare
NUMB3RS - Season 2 - "Soft Target" - Are You Sure?
In "Soft Target," Charlie uses Linear Discriminant Analysis (LDA), a multiple regression method, to predict the next terrorist attack. This method, like many others used to predict events, may use a tree diagram to visualize possibilities. The use of tree diagrams is seen in probability.https://education.ti.com/en/activity/detail/numb3rs--season-2--soft-target--are-you-sure
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
Investigating Quadrilaterals
Students will create a variety of quadrilaterals using the GEOBOARD APP and identify critical attributes.https://education.ti.com/en/activity/detail/investigating-quadrilaterals
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
Perfect Squares and Roots
StudyCards(tm) to practice solving square root problems.https://education.ti.com/en/activity/detail/perfect-squares-and-roots
Rational Reduction
This StudyCards™ stack begins with arithmetic examples and continues through algebra. Students compare numeric representations of the problem to confirm the correct reduced form. Use with Foundations for College Mathematics, Ch. 7.2.https://education.ti.com/en/activity/detail/rational-reduction
Perimeter Pattern
Students will explore a perimeter pattern created using hexagon and triangle pattern block pieces. They will continue the given pattern and use the values obtained to complete a table of values. They will enter the data into the calculator, create a scatter plot and determine the viewing window...https://education.ti.com/en/activity/detail/perimeter-pattern
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
Parametric Equations and Graph Data Bases
Parametric equations are equations that express the coordinates x and y as separate functions of a common third variable, called the parameter. You can use parametric equations to determine the position of an object over time.https://education.ti.com/en/activity/detail/parametric-equations-and-graph-data-bases
Identifying Types of Correlation from a Graph and Calculator
Students will identify different types of correlations graphically and by using the linear regression analysis obtained from a TI-84 Plus calculator. Students will also obtain and know the significance of a correlation coefficient as a result of this lesson.https://education.ti.com/en/activity/detail/identifying-types-of-correlation-from-a-graph-and-calculator
Maximizing Your Efforts
Students write an objective function and graph the system of inequalities to find the maximum profit from selling two types of game players.https://education.ti.com/en/activity/detail/maximizing-your-efforts
Advanced Algebra Nomograph
Students use a nomograph, or type of function machine, to determine the rule of several functions by entering values of x and observing how the value of y changes.https://education.ti.com/en/activity/detail/advanced-algebra-nomograph_1
Measures of Central Tendency Using Scientific Calculators
Concepts and skills covered in this activity include: Modeling mathematics in real-world problem situations Relating procedures in equivalent representations in different contexts Understanding and applying the measures of central tendencyhttps://education.ti.com/en/activity/detail/measures-of-central-tendency-using-scientific-calculators
From a Distance...You Can See It!
Students find the distance between points using common fractions and decimals, with the concepts of midpoint and distance. They also learn to solve problems using the Pythagorean theorem.https://education.ti.com/en/activity/detail/from-a-distance---you-can-see-it
Looking at Statistics Through Circles
Students will measure round objects to determine the circumference and diameter, and use the data to explore geometric concepts of the circle with statistics.https://education.ti.com/en/activity/detail/looking-at-statistics-through-circles
Let Us Count the Ways!
Students evaluate expressions using permutations and combinations of data elements on the calculator. They solve problems using these counting principles.https://education.ti.com/en/activity/detail/let-us-count-the-ways
Roots
Concepts and skills covered in this activity include roots, powers of 10, and problem solving.https://education.ti.com/en/activity/detail/roots