Sketch+vs.+Construction

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__Introduction__
media type="file" key="SketchvsConstruction.flv" width="640" height="480"

__Constructing a Right Triangle__
Video Version
 * 1) Open Sketchpad
 * 2) Draw a Segment
 * 3) Select the //Segment// and //ONE Endpoint//
 * 4) Go to //Construct -> Perpendicular Line//
 * 5) Put a //Point// on the perpendicular line
 * 6) Highlight ONLY the perpendicular line. Go to //Display -> Hide// //Perpendicular Line//
 * 7) Use the //Segment Tool// to create the two missing sides


 * Example of Constructed Objects:** [[file:Quadrilateral Classification.gsp]] (GSP 5) [[file:Quadrilateral Classification GSP4.gsp]]

__Quadrilateral Activity__
We are now going to work on a project that I give my students to complete by the end of the quadrilaterals unit in Geometry. File given to students: //**Your instructions:**// Construction holds dynamic at all vertices and sides and can change size and angle measures || 7 points Construction fails at one vertex/side or it cannot change size/angle measures || 3 points Construction fails at two or three vertices/sides || 0 Points Shape has no dynamic components or was not created || Provides complete set of instructions that are easy to follow and are replicable || 7 points Instructions are missing several steps or are not clear || 3 points Instructions are missing several steps and are not clear || 0 Points No instructions were given || All side and angle measurements are provided, including diagonals || 3 points All side and angle measurements are provided, excluding diagonals || 1 point Only some side and angle measurements are provided || 0 Points No measurements were given ||
 * 1) Find a partner
 * 2) Using Sketchpad, you must create 4 dynamic constructions. These are: parallelogram, rectangle, rhombus, and square. What does this mean?
 * Your construction must always hold the properties of the shape created. For example, if I construct a parallelogram, opposite sides are always parallel. Also, I can manipulate the side lengths and angles (if applicable) by dragging the shape's vertices and/or sides.
 * Hint: The "Construct" and "Transform" tabs will be helpful with different quadrilaterals!
 * 1) Put all 4 sketches in one file, but on different pages. How do you do that?
 * //File// -> //Document options// -> //Add page// -> //Blank Page//
 * Name each page by the quadrilateral you are creating
 * There are tabs on the bottom left corner that help you go from one page to the other.
 * In document options, also name each page by the shape you are constructing
 * 1) On each page:
 * Have your constructed quadrilateral
 * Provide an step-by-step explanation for how you created your quadrilateral
 * Provide the measurements for all sides and angles
 * 1) Check with me before uploading your file to this page.
 * || Meets Full Requirements || Meets Most Requirements || Meets Some Requirements || Met No Requirements ||
 * Dynamic Construction || 10 points
 * Step-by-step Explanation || 10 points
 * Measurements || 5 points

Reflection
Find another pair and discuss the following questions:
 * Compare creating your own constructions and exploring pre-made constructions.
 * What advantages and challenges might occur with a construction activity?
 * How might you change this activity for your class?

-- Ingersoll