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Published byJerome McLaughlin Modified over 8 years ago

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Math Homework No Homework Individuals: Clear your desk! Wednesday, April 1 st

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Math Homework Study for Test! Individuals: Homework out ready to check Wednesday, April 1 st

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Homework Check

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Unit Review Target/Objective: I can find the perimeter and area of rectangles, parallelograms, and triangles.

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Math Vocabulary Review Perimeter: the distance around a shape. – To find the perimeter of a shape, add the lengths.

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Area: the measure of a surface inside a shape. – Area is commonly measured in square units. – The area of a surface is the number of unit squares and fractions of unit squares needed to cover the surface without overlaps and/or gaps. – Different ways of writing square units: Square inch = in² Square meter = m² Square centimeter = cm²

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Finding the Area for a Rectangle: If the length of the base and the width of a rectangle are known, the area can be found by multiplying. Formula: Area of a rectangle = length x width A = l x w

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Finding the Area for a Parallelogram: Height is the distance perpendicular to the base of a figure. Any side of the parallelogram can be the base. The choice of the base determines the height.

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Finding the Area for a Triangle: The area of a triangle is half of the base times the height. Formulas: Area of a ∆ = ½ x Base x Height Area of a ∆ = (Base x Height) ÷ 2

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Find the perimeter of each shape! Add the lengths a. c. b.

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Find the area of each rectangle! Formula: (l x w) a. c. b. 16 cm 9 cm 23 in 7 in

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Find the area of each parallelogram! Formula: (b x h) a. c. b.

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Find the area of each triangle! Formula: (b x h) ÷ 2 a. c. b.

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Journal Work Complete ALL journal pages in Unit 8!! Show your work. Early Finishers: Show Ms. Smith that your journal work is completed; then you may read a book. Time: End of Class Voice Level: 0

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Wrap Up! Did we achieve our target/objective? – I can find the perimeter and area of rectangles, parallelograms, and triangles. Individuals: Get ready to move classes!

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