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Law of Sines Ambiguous Case	Ambiguous Case (Trigonometry)	Sketchpad	Activity		[1]
Use a Geometer's Sketchpad file to investigate the ambiguous case of the law of sines. More: lessons, discussions, ratings, reviews,...
Examining Angles in Polygons	Angles of polygons (Math 7)+	Sketchpad	Activity		[0]
Help students to discover or reinforce the angle formulas associated with polygons. Includes an activity in PDF format and a prepared sketch. More: lessons, discussions, ratings, reviews,...
A Continuation of Minimum Peri...	Bisectors (Geometry)+	Sketchpad	Activity		[0]
A further guided exploration of triangles inscribed within triangles, using Geometer's Sketchpad. More: lessons, discussions, ratings, reviews,...
A Minimum Perimeter Inscribed ...	Bisectors (Geometry)+	Sketchpad	Activity		[0]
A guided exploration about triangle inscribed within triangles, and the conditions under which their perimeter is at a minimum, using Geometer's Sketchpad. More: lessons, discussions, ratings, reviews,...
Angle Bisectors in a Triangle	Bisectors (Geometry)+	Sketchpad	Activity		[0]
A guided exploration of the angle bisectors of a triangle, and the point at which they intersect, using Geometer's Sketchpad. More: lessons, discussions, ratings, reviews,...
Simple Properties of Angle Bis...	Bisectors (Geometry)+	Sketchpad	Activity		[0]
A guided exploration using Geometer's Sketchpad of some properties of angle bisectors in a triangle. More: lessons, discussions, ratings, reviews,...
Exploring Centers of a Triangl...	Centers of triangles (Geometry)	Sketchpad	Activity		[0]
Using problem solving skills, formal geometry, and The Geometer's Sketchpad, students will model and solve two real-world problems by constructing the incenter and circumcenter of triangles. St... More: lessons, discussions, ratings, reviews,...
Exploring Centers of a Triangl...	Centers of triangles (Geometry)	Sketchpad	Activity		[0]
Using problem solving skills, formal geometry, and The Geometer's Sketchpad, students will model and solve a real-world problem by constructing the centroid of a triangle. Students will explore... More: lessons, discussions, ratings, reviews,...
Medians in a Triangle	Centers of triangles (Geometry)	Sketchpad	Activity		[0]
Students discover various properties of the three medians of a triangle. The link to the activity itself is to a zip file that contains a pdf file of the activity. This is a free sample a... More: lessons, discussions, ratings, reviews,...
Two Minimum Length Problems an...	Centers of triangles (Geometry)+	Sketchpad	Activity		[0]
A guided exploration of minimum distances from vertices of a triangle or quadrilateral to a point within the figure, using Geometer's Sketchpad. More: lessons, discussions, ratings, reviews,...
Chords in a Circle	Chords (Geometry)	Sketchpad	Activity		[0]
Students construct chords in a circle and manipulate them to discover various properties. The link to the activity itself is to a zip file that contains a pdf file of the activity. This i... More: lessons, discussions, ratings, reviews,...
A Japanese Temple Problem	Circles (Geometry)+	Sketchpad	Activity		[0]
In this guided Geometer's Sketchpad exploration, students use their knowledge of tangent circles to discover a relationship between the radii of three circles which are mutually tangent to each other ... More: lessons, discussions, ratings, reviews,...
Determining the Uniqueness of ...	Circles (Geometry)	Sketchpad	Activity		[0]
Are there a certain number of arbitrary points such that there exists a unique circle through them? To explore and conjecture an answer to this question, students will construct circles passing throug... More: lessons, discussions, ratings, reviews,...
Kissing Circles	Circles (Geometry)+	Sketchpad	Activity		[0]
This guided exploration, using Geometer's Sketchpad, examines the properties of tangent circles ("osculating" or kissing circles). More: lessons, discussions, ratings, reviews,...
Exploring Conic Sections with ...	Conic sections (Algebra II)+	Sketchpad	Activity	$	[0]
Students will explore the richness of conic sections by building their own physical models and then constructing more flexible models with Sketchpad. Students retain a solid connection with th... More: lessons, discussions, ratings, reviews,...
Introduction to Radians	Deg - Rad - Grad (Trigonometry)	Sketchpad	Activity		[0]
Students learn about radian measure and investigate a Sketchpad simulation that approximates pi to two decimal places. The link to the activity itself is to a zip file that contains both the activi... More: lessons, discussions, ratings, reviews,...
Slopes and Derivatives	Derivatives analytically (Calculus)+	Sketchpad	Activity		[0]
This activity demonstrates one of the many ways Sketchpad can be used in a calculus or math analysis class. Students manipulate a tangent line to a curve to investigate what it means for a curve to ha... More: lessons, discussions, ratings, reviews,...
Ellipses: The Congruent Triang...	Ellipses (Algebra II)+	Sketchpad	Activity		[0]
A pair of congruent triangles holds the key to this unusual Sketchpad ellipse construction. The link to the activity itself is to a zip file that contains both the activity in pdf format and the co... More: lessons, discussions, ratings, reviews,...
Mellow Yellow: Interpreting Gr...	Equations and functions (Math 6)+	Sketchpad	Activity		[0]
Compare different representations of motion: a story, a position graph, and the motion itself. Create a graph that matches a story, or write a story to match a graph, and check either by watching Mell... More: lessons, discussions, ratings, reviews,...
Exterior Angles in a Polygon	Exterior (Geometry)+	Sketchpad	Activity		[0]
Students construct a pentagon with its exterior angles, measure the angles and find the sum. They then dilate the pentagon to look at the problem, and understand their result, in a new way. The lin... More: lessons, discussions, ratings, reviews,...
Slope Pix Lab	Find slope (Math 7)+	Sketchpad	Activity		[1]
This is a computer activity using Sketchpad and specially selected pictures located online (SlopePix web page) to help students understand the concept of slope. Following the instructions, students... More: lessons, discussions, ratings, reviews,...
The Slope Game	Find slope (Math 7)+	Sketchpad	Activity		[1]
Students use a two-player game to develop and refine their sense of the slopes of lines. The link to the activity itself is to a zip file that contains both the activity in pdf format and the corr... More: lessons, discussions, ratings, reviews,...
Exploring Calculus with The Ge...	General (Calculus)	Sketchpad	Activity	$	[0]
The 32 blackline master activities in this collection give students the opportunity to directly experience the dynamic, geometric nature of calculus. Activities cover the fundamental concepts in any f... More: lessons, discussions, ratings, reviews,...
Rethinking Proof with The Geom...	General (Geometry)	Sketchpad	Activity	$	[0]
This book harnesses the power of Dynamic Geometry� to engage students in proving conjectures and thinking about proof in different ways. Rethinking Proof offers other motivations for pro... More: lessons, discussions, ratings, reviews,...
Geometry Activities for Middle...	Geometry in the plane (Math 5)+	Sketchpad	Activity	$	[0]
These activities provide students with the opportunity to explore geometric concepts such as symmetry, transformations, and even fractal geometry in a way no other teaching tool can. The dynamic ca... More: lessons, discussions, ratings, reviews,...
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