- To differentiate this lesson, teach the material in the lesson first, and then let students practice working with
rotations. - The students are going to play a game called “Pass the Image”
- To prepare this activity, you will need to prepare some small square images. You can design a square where it
is divided on the diagonal and one- half of it is blue and the other half is red, etc. - Students are going to be given an image. They need to draw the image according to the rotation specified in
the instruction. - For example, a student is given an image card, they start by drawing the image as it is.
- Then they are told to draw it at 180◦rotation.
- Then they draw it at a 90 degree rotation.
- A 45 degree rotation.
- A 270 degree rotation.
- Then when finished, they pass the image and are given a new one.
- You can do this several times and the students can then compare their work with other students who had the
same images. - Break up students in pairs to have them compare and discuss their work.
- Next, you can move to working with an image on the coordinate plane.
- You can have students draw their own or work with the exercises in the text.
- If you do this activity first, the students will have an excellent understanding of a rotation before moving to
the coordinate grid. - Intelligences- linguistic, logical- mathematical, interpersonal, intrapersonal, visual- spatial, bodily- kines-
thetic.
III.SpecialNeeds/Modifications
- Review the basics of matrices.
- Review how to multiply a matrix.
- Review how to draw a matrix using the vertices of a polygon.
- Define rotation
- Center at the origin with an angle of rotation ofn◦.
- Point moves counterclockwise along an arc of a circle.
IV.AlternativeAssessment
- Create a “key” of what each image looks like after it is rotated.
- Then use this key to check student work.
Composition
I.SectionObjectives
- Understand the meaning of composition.
- Plot the image of a point in a composite transformation.
- Describe the effect of a composition on a point or polygon.
- Supply a single transformation that is equivalent to a composite of two transformations.
II.MultipleIntelligences
- Begin by introducing the concept of a composition.
Chapter 4. Geometry TE - Differentiated Instruction