Sine and Cosine Identities
Students will explore the relationship between the measure of an angle and its sine and cosine. Students will develop two trigonometric identities: sinA / cosA= tanA sin2A + cos2A = 1https://education.ti.com/en/activity/detail/sine-and-cosine-identities
Proof of Identity
Students use graphs to verify the reciprocal identities. They then use the handheld's manual graph manipulation feature to discover the negative angle, cofunction, and Pythagorean trigonometric identities. Geometric proofs of these identities are given as well.https://education.ti.com/en/activity/detail/proof-of-identity_1
Areas of Polygons
Use determinants of matrices as a tool to find the areas of triangles and quadrilaterals.https://education.ti.com/en/activity/detail/areas-of-polygons
Max Area, Fixed Perimeter
The student will use a rectangle of fixed perimeter to find the dimensions of the rectangle of maximum area.https://education.ti.com/en/activity/detail/max-area-fixed-perimeter
Dilations with Matrices
In this activity, students will use matrices to perform dilations centered at the origin of triangles. Students will explore the effect of the scale factor on the size relationship between the preimage and image of a polygon.https://education.ti.com/en/activity/detail/dilations-with-matrices_1
Expanding Binomials
In this activity, students will explore the link between Pascal's Triangle and the expansion of binomials in the development of the Binomial Theorem.https://education.ti.com/en/activity/detail/expanding-binomials_1
Vernier - What Causes the Seasons?
In this activity, students' will explore how the tilt of the earth's axis results in different amounts of solar radiation at different times of the year, causing seasons. They will simulate the earth's warming using a light bulb that will shine on a Temperature Probe attached to a globe, and inve...https://education.ti.com/en/activity/detail/vernier--what-causes-the-seasons
Martinsville Chase
In this activity, students will analyze attaching a wing to a Sprint Cup car.https://education.ti.com/en/activity/detail/martinsville-chase
Altitude to the Hypotenuse
Explore the relationship between the length of the altitude to the hypotenuse in a right triangle and the lengths of the two segments formed when this altitude intersects the hypotenuse.https://education.ti.com/en/activity/detail/altitude-to-the-hypotenuse
Area Measures and Right Triangles
Investigate dependent and independent objects when three equilateral triangles are drawn on the sides of a right triangle.https://education.ti.com/en/activity/detail/area-measures-and-right-triangles
It's Getting Hot in Here
In this lesson, students will manipulate greenhouse gases to gather data on global temperature.https://education.ti.com/en/activity/detail/its-getting-hot-in-here
Special Segments in Triangles
Create four special segments from a given vertex in a triangle and identify relationships among the special segments and the angles they form.https://education.ti.com/en/activity/detail/special-segments-in-triangles
Properties of Special Quadrilaterals
Explore properties of some special quadrilaterals using segments to build quadrilaterals and explore their angles.https://education.ti.com/en/activity/detail/properties-of-special-quadrilaterals
Recombinant DNA
In this lesson, students complete the steps required to clone a single gene and express it in a model organism.https://education.ti.com/en/activity/detail/recombinant-dna
Special Segments in Triangles
Students will construct and explore medians, altitudes, angle bisectors, and perpendicular bisectors of triangles. They then drag the vertices to see where the intersections of the segments lie in relation to the triangle, and they measure distances to identify relationships.https://education.ti.com/en/activity/detail/special-segments-in-triangles_2
Parallel Lines cut by a Transversal with Cabri Jr.
Using Cabri Jr, the students (with the teachers help) will create parallel lines cut by a transversal, measure angles, and compare the relationships of the angles formed using features of the Cabri Jr.https://education.ti.com/en/activity/detail/parallel-lines-cut-by-a-transversal-with-cabri-jr
SSS Triangle Congruence
Students will: 1. Construct a triangle and measure its sides and angles. 2. Construct a second triangle with corresponding sides equal in length. 3. Try to alter the properties of their construction by moving the vertices.https://education.ti.com/en/activity/detail/sss-triangle-congruence
Relationship of Vertical Angles
Explore congruency of vertical angleshttps://education.ti.com/en/activity/detail/relationship-of-vertical-angles
Relationship Between Radius and Tangent to a Circle
Generalize that a tangent and a radius form a 90-degree angle.https://education.ti.com/en/activity/detail/relationship-between-radius-and-tangent-to-a-circle
SAS Triangle Congruence
Students will: 1.Construct a triangle and measure one pair of sides and the contained angle 2.Construct a second triangle with corresponding sides equal in length and congruent corresponding angles 3.Try to alter the properties of their construction by moving the verticeshttps://education.ti.com/en/activity/detail/sas-triangle-congruence
Relationship between central angle and inscribed angle measure
Students investigate the relationship between measure of central and inscribed angles in a circle.https://education.ti.com/en/activity/detail/relationship-between-central-angle-and-inscribed-angle-measure
Tri This!
Students investigate linear equations that form a triangle and determine which vertex is a solution to a system of equations.https://education.ti.com/en/activity/detail/tri-this
Trigonometric Ratios
Students discover the trigonometric ratios through measuring the side lengths of similar triangles and calculating their ratios. The formal definitions of the sine, cosine, and tangent or an angle are presented and applied to find the missing side lengths.https://education.ti.com/en/activity/detail/trigonometric-ratios
Investigating the Pythagorean Theorem
Use your TI-84 Silver Plus calculator and the Carbri Jr file 'PYTHAG' to have students investigate what happens to the results of the Pythagorean Theorem for acute, right, and obtuse triangles.https://education.ti.com/en/activity/detail/investigating-the-pythagorean-theorem
Triangle in the Matrix
Students represent a triangle with a matrix and use the determinant to find the area of three given triangles.https://education.ti.com/en/activity/detail/triangle-in-the-matrix_1