Constructions

- Basic set of constructions- I use as a preassessment after MSA but before starting the end of year Geometry Unit.

- I created this as students seem to either "get" constructions the first time around or need more instruction and I wanted to have a differentiated "choice" activity for students to use to show their understanding of constructions. There are 2 appetizers, 2 "entrees" and a dessert. The appetizers are attached below. The entrees include two ways to model directions for one construction- The first is creating a brochure and showing multiple stems and diagrams. The second is writing a script for a mini tv program. This year I used Flip cameras and had students record their mini shows! The "dessert" was just a design- for example, one students created a robot where the hands were angle bisectors, the mouth was a perpendicular bisector, and the legs were congruent line segment constructions.
 * [[file:Constructions Menu Appetizer1.doc]]- guided practice- I modeled the first one and students completed the second one on their own.
 * [[file:Constructions Menu Appetizer2.doc]]- students worked in groups of three- each one constructed the perpendicular bisectors of all three sides of their triangle. I then had them compare where the three bisectors intersected. On the acute triangle, they intersect inside the triangle. On the right triangle, they intersect in the center of the hypotenuse. On the obtuse triangle, they intersect outside the triangle. Really, they are finding the Circumcenter of the triangle.