Thursday, Feb. 27, 2014 Directions: Please come in and get your journal. Title: Area and Perimeter. Challenge Question: How and when does a formula help us solve problems (outside of the math classroom)? Warm-Up: Complete the warm-up in your journal with 0 noise level! Name these two triangles based off of their angles and sides

What is a parallelogram? A quadrilateral with 2 pairs of parallel sides. Opposite sides of a parallelogram are congruent. Opposite angles in a parallelogram have the same measure.

Understanding Area and Perimeter

Perimeter Perimeter is simply the distance around an object… it’s rim Everyday applications of perimeter include the amount of fence needed for your yard or the distance around a football field. To figure out the perimeter of a rectangle, simply add up all the sides.

Calculating Perimeter If the length of this rectangle is 10cm and it has a width of 4cm, what is the perimeter?

Area Area usually deals with how much space an object covers or how much is needed to cover the object… remember everything inside your bedroom is your space Everyday applications of area include how much carpet is needed in a house or how much material it will take to make a trampoline.

Calculating Area To calculate the area of a rectangle, simply multiply the length by the width. length x width = area If a rectangle has a width of 6 feet and a length of 8 feet, what is the area?

Area of Triangles Finding the area of a triangle is somewhat different than finding the area of a rectangle. With triangles, we no longer can use length times width. We now use base times height. The formula for the area of triangles is: ½ x base x height (or )

Area of Triangles cont. The height of the triangle is the distance from the base to the point farthest away, measured along a perpendicular line. The height of this triangle is 4 inches and the base is 6 inches, what is its area? H B

Calculating Area & Circumference of Circles

Distance Around a Circle The distance around a circle is not called perimeter. It is called the circumference. To calculate the circumference of a circle we need to use pi. The value for pi is Pi is the ratio of the circumference to the diameter of ANY circle.

Presentation: How did we do today? Did we complete the daily warm-up with 0 noise level? Did we maintain classroom operating procedures? Did we take all the notes without being asked several times?

Learning Together Complete the odd numbers on the Area & Perimeter WS You have 25 minutes

Learning Together: How did we do today? Did we maintain classroom operating procedures including 0 noise level? Did we work toward our learning goals? I can use my knowledge of shapes and the formula chart to calculate area and perimeter. Did we ask our partner for help and use our notes before asking the teacher?

Just For Me Complete the even numbers on the Area & Perimeter WS You have 20 minutes

Just For Me Complete the Ticket out the Door for Wednesday, 2/26/14.

Wrap-Up Homework: Complete the Area & Perimeter WS if not finished… due on Friday!!! Supplies: Take your journal home if needed. Place any supplies used back in the supply bins. How did we do today? Did we maintain classroom operating procedures? Did we work toward our learning goals? I can use my knowledge of shapes and the formula chart to calculate area and perimeter. Did we complete the tasks?