Area of Irregular Shapes (includes triangles)....Worksheets that double as assessments! This Area of Irregular Shapes worksheet set is 14 pages long, and is Common Core-aligned to help you meet the new Standards for Mathematics. My third graders (inner-city, low socioeconomic background, English Language Learners) were progressively challenged by the examples set out on these 3 worksheets.

There are 3 Area of Irregular Shapes worksheets, all identical in form but with different problems.
All of the worksheets come with their own answer sheets, with all answers in red, for easy grading.

I used the first sheet after my lesson, gave the second for homework, and followed the next day with the third for a quiz.

All worksheets come with an answer sheet which allows for two different types of scoring: quick scoring (right or wrong), and partial-credit opportunity scoring.

These Area of Irregular Shapes worksheets will help your students practice the concept of area, and are are typically used for a lesson following an introduction to the concept of area. (For worksheets to be used with that lesson, please go to http://www.teacherspayteachers.com/Product/Area-Common-Core-Worksheets to find what you need!)

The examples on each worksheet get more challenging as the students work down the page, so struggling students will experience early success and be more likely to attempt the more challenging examples.

Examples include:
Identify the number of square units in a given triangle.
Identify the total number of square units in two adjacent rectangles.
Identify the number of square units in an irregular shape.
Find the area of a given rectangle.
Find the total area of a given irregular shape. (While this requires separating the shape into 2 rectangles, instructions are given to remind students how to do this, and further support is offered for setting up the mathematical work correctly.

The first page focuses on square units, with grids providing a needed visual for struggling students struggling with the concept of area. The second page of each worksheet concentrates on finding the area using the standard formula for area (A = l x w). Together, both pages allow the teacher to determine exactly where a student may be “stuck.”

I have found this kind of progression very helpful for:
student grouping decisions
creating Response To Intervention (RTI) paperwork
consulting with other teachers to decide upon needed services for a student
meeting with parents

My students need a lot of support and repetition with mathematics, and I found that using worksheets such as these improved retention of the practiced skill. I hope you find these as useful as I do!

Please visit my site at http://www.teacherspayteachers.com/Store/Commoncoreteach for more products that will be quick and easy additions to your school day!