Sunday, January 25, 2015

Perimeter and Area

Last week we worked on perimeter and area. We focused quite a bit on the formulas that are used to find both.

Perimeter is the distance around a two-dimensional shape.

We focused on three formulas to find perimeter:

P = s + s + s (perimeter = side + side + side) - this formula can be sue on any shape

P = 4 x s (perimeter = 4 x side) - this formula works for squares

P = (2 x l) + (2 x w); perimeter = (2 x length) + (2 x width) - this formula works for rectangles

Area is the size of a surface or the amount of space inside the boundary of a flat (2-dimensional) object.

We focused on one formula to find the area of a rectangle:

A = l x w (area = length x width)

Follow this link if you want more clarification on calculating perimeter and area:

Homework this week will have your kiddo calculating perimeter and area. I expect them to write down the formula that they choose to use before they solve. Ask them about the three F's in math.

Please let me know if you have any questions! I am happy to help in any way I can!