M. C. Escher and the world of Geometry Curricular Area: Mathematics/Geometry Grade level: 9th-10th Time Frame: One week Goals Students will show understanding in identifying and understanding tessellations and transformations i.e. translations, reflection, rotation and glide reflection. They will use works of M.C. Escher to represent tessellations. Students will use the Internet to research M.C. Escher and one of his works. Objectives 1. Given 10 minutes, students will classify 11 transformations based on coordinate plane images with a 90% accuracy. 2. Given 20 minutes and a teacher demonstration, students will accurately analyze transformations in a three works by M.C. Escher with a 90% accuracy. 3. In partners, students will create a presentation that represents geometry in an M.C. Escher work in one week. §111.34. Geometry (b) 2.A: The student is expected to use constructions to explore attributes of geometric figures and to make conjectures about geometric relationships (B) 5.C: The student is expected to use properties of transformations and their compositions to make connections between mathematics and the real world, such as tessellations (b) 10.A: The student is expected to use congruence transformations to make conjectures and justify properties of geometric figures including figures represented on a coordinate plane (b) 11.A: The student is expected to use and extend similarity properties and transformations to explore and justify conjectures about geometric figures Context/Modifications Students already have been introduced to how geometry is present in architecture and artwork. Students already know how to physically represent transformations Key Terms Transformation-A change in the position, size or shape of a figure. The most common transformations include translation, rotation, reflection and enlargement. Translation-a transformation in which every point of a geometric figure is moved the same distance in the same direction. Reflection-(in a plane) the replacement of each point on one side of a line by the point symmetrically placed on the other side of the line; a mirror image of a figure Rotation-an operation that rotates a geometric figure about a fixed point. Glide Reflection-is a composite transformation which is a translation followed by a reflection in line parallel to the direction of translation. Tessellation-is a pattern of shapes repeated to fill a plane without any overlapping of shapes and without any gaps; also called tiling. Materials Printed examples of M.C. Escher's works Pencils, Pens, Paper Tiles, Cutouts of shapes Internet White board/Overhead Projector Makeshift coordinate plane, either on board or paper Anticipatory Focus Have students research M.C. Escher before they come to class to see example of his works and have them select a favorite piece of his artworks. Introduce the concept of transformations and how they are represented in artwork and architecture. Show students particular websites they may use to research M.C. Escher and where they can find useful information about him Show students examples of past group presentations Procedures 1. Teacher will reintroduce transformations to class and have students properly define each form of transformations based on prior knowledge. (15 minutes) 2. Teacher will have students use tiles and makeshift coordinate planes to represent each form of transformation. (25 minutes) 3. Teacher will hand out worksheet to each student and will do one example with them (10 minutes) 4. Teacher will allows students time to complete worksheets alone or with partners while assisting those who need help (20 minutes) 5. Teacher will ask students about where they see transformations or tessellations (5 minutes) 6. Have students share the information they researched on M.C. Escher (5-10 minutes) 7. Introduce Escher assignment to students and go over requirements for project. (5-10 minutes) 8. Students will be assigned their partners they will work with (3 minutes) 9. Show students each M.C. Escher artwork (10 minutes) 10. Students will identify any transformations in each artwork. (5 minutes) 11. Allow students time at the end of class to meet with partners and work on collaborating ideas for project (10 minutes) Setting Expectations Students will participate in class discussions The teacher will make sure that each student can properly represent transformations on their own graph The teacher will assist students with accessing information on M.C. Escher Students will provide a reasonable amount of information on M.C. Escher Students will respect each others choice of artwork to use Students will have a complete project (in some form) to present to class at the end of the week Input Visual display of M.C. Escher artwork Visual display of transformations Visual display of websites for students through showing on computer Modeling The teacher will explain the use of transformations and tessellations in architecture (around the room or in pictures) and tessellations (in artwork). The teacher will show examples of past presentations for students to see how their presentation should be organized. The teacher will show how to properly search for information about M.C. Escher and his works. Check for Understanding The teacher will make sure that the students can represent transformations properly. The teacher will circulate throughout the classroom while students are working on solving the transformations using the tiles and makeshift coordinate plan or the worksheet. The teacher will have students use white board to visual show their understanding about transformations and tessellations. Guided Practice The teacher will guide the students while working on the initial problems for transformations. The teacher will allow students to use white board to solve any problems they may have, with his/her help. The teacher will monitor students while working on problems and while collaborating with their partners. The teacher will guide students in identifying transformations and tessellations in M.C. Escher's works. Reteach The teacher will have students redefine transformations and re-identify transformations on examples. The teacher will go over requirements for the presentations Independent Practice Students will work with tiles on their own to show their own representations of transformations. Students will work on given problems with their tiles. Mastery check Teacher will have students represent a select problem for their classmates as a way to check answers on worksheet. The teacher will walk throughout the class to make sure a student doesn't have questions on how to create a presentation. A teacher will have certain checkpoints for students to reach each day. Technology Uses 1. Internet searches 2. Overhead project/White board/ Promethean board Websites http://filipspagnoli.files.wordpress.com/2008/06/mc-escher-waterfall.jpg http://marbsonline.com/wordpress/wp-content/uploads/2009/02/mcesher_day__night.jpg http://library.thinkquest.org/16661/gallery/escher/8.html http://library.thinkquest.org/16661/gallery/escher/12.html Extensions Students may further research on transformations and tessellations in artwork Closure Students will discuss their final presentations with their classmates Students will discuss their newfound information on M.C. Escher Teacher will ask students about how when they are ever in a new place, they should look around and see if transformations are all around them in the buildings they see or the artwork they see. Reflective Critique The teacher should make time available for students collaborate with him/her Students should be able to grasp their understanding of the concept at the end of the week Evaluation/Assessment Final presentation