Texas Instruments
Texas Instruments: Friction
Students study how the nature of two materials in contact, and the smoothness of their surfaces affect the magnitude of the sliding force of friction. They use a force sensor to measure frictional force for different surfaces.
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Texas Instruments: Beating Hearts
In this activity, students' will use a heart rate monitor to measure their heart rate in beats per minute (BPM) while they exercise. They will understand the effect of exercise on heart rate and learn how to measure differences in heart...
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Texas Instruments: Follow the Golden Rule
Students find ratios and calculate measures of central tendency for sets of data. They understand the concept of the Golden Ratio. They use box-and-whisker plots to analyze data.
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Texas Instruments: Central Versus Inscribed Angles in Circles
Using Cabri Jr. to explore the connection between central and inscribed angles along with their arc measure.
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Texas Instruments: Angles Formed by Intersecting Chords, Secants, and Tangents
In this activity, students will investigate properties of angles and arcs formed when chords, secants, and tangents intersect and intercept arcs in a circle. They discover several important theorems concerning circles and arc sizes. They...
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Texas Instruments: Midpoint of a Segment
Students review the basic geometry definitions of segment and midpoint, and learn to use drawing and measurement tools. They explore changes in measurements as the figure is altered.
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Texas Instruments: Is a Square a Special Case of Rectangle?
The definition of square can determine whether it is a special case of a rectangle. Using the Cabri Jr. application, students can get a feel for why its definition makes sense. Along the way, they get experience with perpendiculars,...
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Texas Instruments: Direct Variation With Powers: Surface Area and Volume
Students find the approximate surface area and volume of an apple, measuring circumference 3 ways, using the mean of the measurements to find the radius. Each students enters the results in a Table on the board.
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Texas Instruments: Dynamic Geometry: Basic Constructions
Students use the Cabri Jr. application to draw triangles and construct perpendicular bisectors on the sides of a triangles. They study the properties of a triangle and understand how the measures of angles of a triangle is always 180...
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Texas Instruments: Subnivean Comfort
Students measure and compare air temperatures inside and outside a snow shelter. If students choose to sleep in the shelter overnight they use the temperature measurements to confirm what they discover experientially- that snow is a...
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Texas Instruments: Real Life Real World Activity Surveyor
Surveyors describe land parcels with distance and angle measurements, often given as compass headings. Once the boundaries of the land parcel are described, the surveyor can calculate the area of the land. This activity uses Cabri Jr....
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Texas Instruments: Enzyme Action: Testing Catalase Activity
Students can use an O2 Gas Sensor to measure the amount of O2 produced when H2O2 is broken down by the enzyme catalase at different concentrations, pH values, and temperatures. They will also measure the enzyme's initial reaction rates.
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Texas Instruments: Inscribed Angles Intercepting the Same Arc
Students investigate the properties of angles inscribed in a circle. They use the drawing and measurement tools of Cabri Jr. to draw and measure certain angles, and establish the relationship between angles that intercept the same arc.
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Texas Instruments: Is an Equilateral Triangle a Special Case of Isosceles?
The definition of isosceles triangle can determine whether an equilateral triangle is a special case of an isosceles triangle. Using the Cabri Jr. application, students can get a feel for which definition makes the most sense. Along the...
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Texas Instruments: Describing One Variable Data
Students sort data and display it graphically using various plots. They also get familiarized with statistical concepts like measures of spread and central tendency.
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Texas Instruments: Jason: Leaf Cutting Ants Fungus Farmers
Rainforests at the Crossroads: Use a TI-73 Explorer to become familiar with a graphical technique for measuring the amount of leaves Leaf Cutter Ants chew. Measure the mass of a chewed leaf and then find its area.
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Texas Instruments: The Closer I Get to You Ti 83
Here's a group activity your students can do to learn about rational functions. Students will use properties of reflections together with measuring tapes, mirrors, and masking tape to find a function that relates height of a reflection...
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Texas Instruments: Swing Your Can
Sinusoidal data already obtained by swinging a can over a meter stick and measuring time and displacement from its resting position using a CBR or CBL with a motion detector. Using the TI-Navigator, you can monitor their "real time"...
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Texas Instruments: Looking for Mr. Right Triangle
Navigator Activity: This is a review of the right triangle in the coordinate plane. Given two lines (2 really nice ones) the students write the equation of the 3rd line to create a right triangle. They find the vertices of the triangle...
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Texas Instruments: Forensics Case 8: Using Soil Characteristics to Link Suspects
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...
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Texas Instruments: Keep It Bottled Up: Linear Rates of Pressure Increase
In this activity, students' examine how temperature affects the rate of gas production during a chemical reaction. They measure this rate by recording the pressure variation using a pressure sensor and model the pressure data using a...
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Texas Instruments: Math Today When a Ruler Isn't Enough
This activity illustrates a real-life problem that uses trigonometry to solve for an unknown. students can use trigonometric ratios and inverse trigonometric relationships to determine the side of a triangle and the measure of the...
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Texas Instruments: What Goes Up: Position and Time for a Cart on a Ramp
In this activity, students' will use a motion detector to measure how the position of a cart on a ramp changes with time. They will then determine a parabolic model for the position data using the intercepts.
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Texas Instruments: Math Today for Ti Navigator Usa Money in Circulation
Students will determine the approximate number of $20 bills in circulation as of December 31, 2001, using percent and total number of bills from the USA TODAY Snapshot "USA money in circulation." Students will write their answers in...