Forensics Case 9 - Killer Cup of Coffee: Using colorimetry to determine concentration of a poison
In this activity, students will use colorimetry to determine the concentration of a colored species in a solution and use a linear relationship to model Beer's law. They use Beer's law to determine the concentration of iron(III)thiocyanate (FeSCN2+) in an unknown solution.https://education.ti.com/en/activity/detail/forensics-case-9--killer-cup-of-coffee-using-colorimetry-to-determine-concentration-of-a-poison
Forensics Case 8 - No Dumping: Using soil characteristics to link suspects to a crime scene
In this activity, students measure pH, conductivity, and water absorbency of different samples of soil. They use these characteristic properties to identify soil samples. They use the physical and chemical characteristics of soil samples collected from suspects to determine whether a suspect had ...https://education.ti.com/en/activity/detail/forensics-case-8--no-dumping-using-soil-characteristics-to-link-suspects-to-a-crime-scene
Forensics Case 5 - The Ink Is Still Wet: Using colorimetry to identify an unknown ink
In this activity, students identify the ink of a ransom note to match suspects. They identify an unknown ink by its light absorbance characteristics. The experiment set up used is to measure a solutions absorbance of different colors (wavelengths) of light.https://education.ti.com/en/activity/detail/forensics-case-5--the-ink-is-still-wet-using-colorimetry-to-identify-an-unknown-ink
Solution 34422: Calculating Inverse Sine (Arcsine), Cosine (Arccosine), and Tangent (Arctangent) on the TI-83 Plus and TI-84 Plus Family of Graphing Calculators.
Solution 34422: Calculating Inverse Sine (Arcsine), Cosine (Arccosine), and Tangent (Arctangent) on the TI-83 Plus and TI-84 Plus Family of Graphing Calculators. Solution 34422: Calculating Inverse Sine (Arcsine), Cosine (Arccosine), and Tangent (Arctangent) on the TI-83 Plus and TI-84 Plus F...https://education.ti.com/en/customer-support/knowledge-base/ti-83-84-plus-family/product-usage/34422
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 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
The Lunes of Hippocrates
In this activity, students will explore a figure that involves lunes - the area enclosed between arcs of intersecting circles. When lunes are constructed on the sides of a right triangle, an interesting result occurs.https://education.ti.com/en/activity/detail/the-lunes-of-hippocrates_1
Flatland: The TI-Book
One of the best geometry books of all time is Flatland. Written over a century ago, there is no copyright for this book and you can find it available free as a podcast or a text file. However, nothing beats a TI-book with nicely produced diagrams.https://education.ti.com/en/activity/detail/flatland-the-tibook
Investigating the Angles of a Triangle
The following will find the sum of the interior angles of a triangle and the sum of the remote interior angles of a triangle. Students can then change the type of triangle. The student will see that the sum of the interior angles is always 180 degrees. Also, the student will see that the sum of t...https://education.ti.com/en/activity/detail/investigating-the-angles-of-a-triangle
From 0 to 180 - Rethinking the Cosine Law with Data
The goal of this activity is for students to experience a data-driven, inductive investigation leading to the cosine law. This could be used in addition to or instead of the traditional proof to deepen the understanding of the behavior of triangles and make the concepts more accessible to more s...https://education.ti.com/en/activity/detail/from-0-to-180--rethinking-the-cosine-law-with-data
Eccentricity of Polar Equations of Conics
This activity will give students a series of polar equations of conics to discover a pattern of the eccentricity of each type of conic.https://education.ti.com/en/activity/detail/eccentricity-of-polar-equations-of-conics
Exploring the Cycloid Curve
The TI Nspire's animation feature is used to show how a point on a rotating circle creates the cycloid curve. Students then examine the parametric equation of the cycloid. Finally, students are tasked with going online to investigate the terms brachistochronous and tautochronous and their relat...https://education.ti.com/en/activity/detail/exploring-the-cycloid-curve
Big Data Sets - Median income
Using the data in the TNS file on Median Income, students can explore trends of workers aged 15 and over across gender, race, occupation, and education and by state as of 2020.https://education.ti.com/en/activity/detail/exploring-data-sets@-median-income
Modeling Herd Immunity
In this activity, students investigate the concept of herd immunity and the role vaccines/interventions can play in helping to control the spread of a communicable disease.https://education.ti.com/en/activity/detail/modeling-herd-immunity
Cybersecurity 7- Pick the Lock
This bonus activity challenges students to put all the concepts they’ve learned together in order to successfully pick a micro:bit lock. Will your students be able to discover what’s locked away inside the old treasure chest?https://education.ti.com/en/activity/detail/cybersecurity-7
Beer's Law Data Collection Lab
In this lesson, students will use a Colorimeter to discover the relationship between absorbance and concentration of a solution to ultimately determine an unknown solution.https://education.ti.com/en/activity/detail/beers-law-data-collection-lab
Energetic Coasters
In this lesson, students will explore the potential energy (PE) and kinetic energy (KE) of a roller coaster.https://education.ti.com/en/activity/detail/energetic-coasters
Free Body Diagrams
In this lesson, students will explore the relationships of the different forces on an object such as weight, normal force, parallel force, and friction.https://education.ti.com/en/activity/detail/free-body-diagrams
Matholutions Activity
...at additional prompts will you think of? When done, consider displaying student goals around the room to give inspiration, encouragement and support accountability. The Matholutions Bulletin Board Décor is a companion piece to this activity.--> Empower students to reflect and set their ow...https://education.ti.com/en/activity/detail/matholutions-activity
Approaching the Golden Ratio
Students will observe that the ratio of consecutive terms in all Fibonacci-like sequences approaches the Golden Ratio.https://education.ti.com/en/activity/detail/approaching-the-golden-ratio
Mapping Success
In this activity, students will load a background image of a map and use the scale on the map to estimate distances.https://education.ti.com/en/activity/detail/mapping-success
REAL LIFE REAL WORLD Activity: Air Traffic Control
In this lesson, students will model and solve air traffic control problems with geometry software. The Cabri Jr. application will be used to construct a model of the problem situation and concepts from trigonometry and proportions are then applied to find the solution.https://education.ti.com/en/activity/detail/real-life-real-world-activity-air-traffic-control
Modeling Herd Immunity
In this TI-84 activity, students investigate the concept of herd immunity and the role vaccines/interventions can play in helping to control the spread of a communicable disease.https://education.ti.com/en/activity/detail/modeling-herd-immunity_84
Law of Large Numbers: A Weighty Decision
In this activity, students will explore the Law of Large Numbers. By examining unfair models, they will expand their understanding of probability. They predict the weighting of an unfair model by analyzing experimental data and distributions. They will also formulate and test a hypothesis on the ...https://education.ti.com/en/activity/detail/law-of-large-numbers-a-weighty-decision