4.10 Perimeter and Area
Triangles and Parallelograms
I.SectionObjectives
- Understand the basic concepts of the meaning of area.
- Use formulas to find the area of specific types of polygons.
II.MultipleIntelligences
- Teach the material in this lesson, and then move on to the activity.
- To complete this activity, you will need to prepare enough drawings for one- half of the students in the class.
One- half of the class receives a drawing of a complex figure. - You will need to prepare the area measurements for this complex figure for the other half of the class.
- Then hand out one to each student. Some students will receive drawings and some will receive measurements.
- The students will need to figure out the measure of their figure and find the person in the room who has the
correct area measurement for their figure. - The activity is complete when both persons are sure that they have been matched up correctly.
- This is a noisy activity, but the students will have a lot of fun doing it. It also has a lot of movement in it which
is excellent for kinesthetic learners. - Then repeat this activity. Be sure that those who received drawings get area measurements and those who had
measurements receive drawings. - Intelligence- linguistic, logical- mathematical, bodily- kinesthetic, visual- spatial, interpersonal, intrapersonal.
III.SpecialNeeds/Modifications
- Provide students with notes to refer to throughout the lesson and activity.
- Area of rectangle=l×w
- Area of parallelogram=bh
- Area of triangle=^12 bh
- Write out the Congruent Area Postulate
- Write out the Area of Whole is Sum of Parts Postulate.
- Be sure that students copy these notes down in their notebooks.
IV.AlternativeAssessment
- Student assessment is done through the activity. Were the students able to find the correct “match- up?”
- Assist students who have difficulty with the assignment.
Trapezoids, Rhombi and Kites
I.SectionObjectives
Chapter 4. Geometry TE - Differentiated Instruction