Lesson: Area of Parallelograms

2461 Views
57 Downloads
2 Favorites

Lesson Objective

SWBAT find the area of parallelograms

Lesson Plan

 

Element/Time

Lesson Steps

Do Now

(8:30 – 8:40)/(10:00 –10:10) 

·         T displays 4 review problems

·         S complete problems independently on do now sheet

·         T walks around to check hw/help students with do now questions

·         T/S review problems together

·         S correct their work to reflect the correct answers

HW Check

·         T displays correct answers and work

·         S correct work with colored pencil  T walks around to review specific students work

·         T/S review 3 questions 

Mental Math

(8:40 – 8:50) /(10:10 – 10:20)

·         Law of Exponents

Mini Lesson

(8:50 – 9:25)/(10:20 – 10:55) 

·         T will define area as the number of squares that fit within a shape – and thus all answers should be in sq. units

o    Explain by relating to exponents – in this case we are multiplying two different dimensions together.  So it would be dimensions squared and this is why it’s called a two dimensional shape.

·         T/S will find area by placing squares into a rectangle and seeing how area is just the number of squares inside the shape and relating it to the formula.

·         T will demonstrate finding the area of a rectangle (noting that the formula is length x width)

·         S will find the area of a rectangle using formula

·         T will say that a rectangle is one type of parallelogram but also demonstrate that some parallelograms look like (a rhombus)

·         T will demonstrate finding the area of a parallelogram by

o    Clearly identifying the base

o    Clearly identifying the height

§  Explain the height of the shape is going to be straight up and down – just like when you measure yourself, you don’t lean over and then measure you want to stand as straight as possible

o    Display several different parallelograms to students in which the base, height and an additional leg’s measures are given.  Have students identify the base and the height in each example.

·         T will model finding the area of a parallelogram using the formula. 

·         T will demonstrate that the formula for a parallelogram and rectangle are the same by showing how a parallelogram and rectangle are similar (cut of the triangle on the end and move it to the other side to make it look like a rectangle and relate the height here).

·         S will find the area of a parallelogram using the formula

·         S will work on open-ended/mc questions to find the area of a given parallelogram

·          

Skills Time

(9:35- 9:50) /(11:05-11:25)

·         Skills Time: same groups as Monday

o    Review matching equations

 

Lesson Resources

area parallelogram cw 3 17 09  
928
Area of Parallelograms HW  
720
U9.L7.SHAPES.Area.of.Parallelograms.docx  
668

Comments


Cancel
No comments at this time.
Add Comment

Close

Something went wrong. See details for more info
Nothing to upload
details
close