Term 3: Week 7 February 18-22, 2008 OBJECTIVES 4b) Use formulas and strategies, such as decomposition, to compute the perimeter and area of triangles, parallelograms, trapezoids, the circumference and area of circles, and find the area of more complex shapes. (DOK 2)
SCHEDULE Monday: Area of Triangles and Parallelograms Tuesday: Area of Trapezoids Wednesday: Area and Circumference of Circles Thursday: Complex Shapes and Review Friday: Review and Common Assessment
Monday: Area of Triangles and Parallelograms OBJECTIVES We will calculate the area of triangles and quadrilaterals. PROCEDURES Bell Ringer. Review of area of rectangles. Managers. Homework Review. Guided Practice. Area of Triangles. The students will use worksheet1 and worksheet2 to discover how the area of a triangle relates to the area of a rectangle. We will cut the triangles and examine what rectangles we can make when we use two of them. The class will develop a formula for the area of a triangle. The Teacher will show students how to identify the base and the height of a triangle. He will show them how to calculate the area of a triangle. Independent Practice. Students will calculate the area of several different triangles. Guided Practice. Area of Parallelograms. The students will use worksheet3 to discover how the area of a parallelogram relates to the area of a rectangle. We will cut the parallelograms and examine what rectangles we can make with them. The class will develop a formula for the area of a parallelogram. The Teacher will show students how to identify the base and the height of a parallelogram. He will show them how to calculate the area of a parallelogram. Independent Practice. Students will calculate the area of several different parallelograms. CLOSURE Using the area of a triangle and rectangle to find the area of a trapezoid.
Tuesday: Area of Trapezoids OBJECTIVES We will calculate the area and perimeter of triangles, rectangles, squares, parallelograms, and trapezoids. PROCEDURES Bell Ringer. Area of triangles and parallelograms review. Homework Review. Independent Practice. Students will estimate the area of different trapezoids. Guided Practice. Area of Trapezoids. The students will discover how the area of a trapezoid relates to the area of a rectangle. We will cut the trapezoids and examine what rectangles we can make with them. The class will develop a formula for the area of a trapezoid. The Teacher will show students how to identify the bases and the height of a trapezoid. He will show them how to calculate the area of a trapezoid. Independent Practice. Students will calculate the area of trapezoids. Independent Practice. Students will calculate the area and perimeter of triangles, rectangles, squares, parallelograms, and trapezoids. CLOSURE Discussion of perimeter and area.
Wednesday: Area and Circumference of Circles OBJECTIVES We will calculate the area and perimeter of triangles, rectangles, squares, parallelograms, and trapezoids. We will calculate the area and circumference of circles. PROCEDURES Bell Ringer. Students will calculate the area and perimeter of triangles, rectangles, squares, parallelograms, and trapezoids. Group Practice. Investigation of Pi. Students will measure the circumference, diameter, radius and area of several circles, with the aid of yarn, a ruler, and centimeter gird paper, and investigate the nature of pi. The class will have a discussion of pi. Guided Practice. Area and Circumference of Circles. The class will discuss the radius and diameter of a circle and how to find the circumference and area of a circle. We will decide on an estimation for pi. Independent Practice. Students will calculate the area and circumference of different circles. CLOSURE Discussion of area, perimeter and circumference.
Thursday: Area and Perimeter of Complex Shapes OBJECTIVES We will calculate the area and perimeter of triangles, rectangles, squares, parallelograms, and trapezoids. We will calculate the area and circumference of circles. We will find the area and perimeter of complex shapes. PROCEDURES Bell Ringer. Students will calculate the area and perimeter of triangles, rectangles, squares, parallelograms, and trapezoids and the area and circumference of circles. Guided Practice. Finding the Area of a Complex Shape. Students will find the area of a shape. The class will discuss strategies to find the area of the shape. We will use centimeter grid paper to estimate the area. The students will use scissors to deconstruct the shape into shapes that they can find the area of. Independent Practice. Students will find the area of another complex shape. Class Review Basketball. We will review how to find the area and perimeter of triangles, rectangles, squares, parallelograms, trapezoids, the area and circumference of circles, and the area and perimeter of complex shapes. CLOSURE Discussion of the Test.
Friday: Review and Common Assessment OBJECTIVES We will calculate the area and perimeter of triangles, rectangles, squares, parallelograms, and trapezoids. We will calculate the area and circumference of circles. We will find the area and perimeter of complex shapes. PROCEDURES Bell Ringer. Review. Common Assessment.
