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Area of Triangles Foldable Reference Activity with Formula Options

Grade Levels
6th - 8th
Formats Included
  • PDF
17 pages
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  1. Middle school math teachers - here are 18 hands-on, engaging math resources including foldable papers, task cards, Interactive Student Notebook activities, and worksheets for grades 6 - 8! HUGE collection of 18 highly rated math resources! Recent updates and facelifts on many of the resources!These
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This Area of a Triangle activity uses silly - but memorable and relevant - phrasing to teach students the relationship between triangles and rectangles - they'll remember this activity. Several different formula options are available - choose the one that you use to teach.

Sometimes it’s the silly things that help keep ideas sharp and memorable.

This foldable reference activity - perfect for student interactive notebooks - represents a funny “love triangle” because half #1 of the triangle is looking for his/her other half. The remaining #2 half says, “You complete me!” because when they combine, they make a complete rectangle. Simple, but memorable! 

In my district, depending on the grade level and depending on the students, we switch from using the formula A=length x width to Area = base x height. The third option of Area = 1/2 base x height is also included. Choose the option that suits the needs of your class!

What you receive:

There are 6 sets of foldable styles. They’re all similar except for minor details. Choose the option that best suits your needs.

  • Set 1 – Full-sized foldable activity designed to fill out an 8½ x 10-inch paper. It uses the formula Area = base x height. I hole-punch the side of the first page, and students put it in their binders. Colored paper, markers, & crayons make it look fantastic!

  • Set 2 – Small-sized foldable activity – perfect for the smaller sized composition notebooks that many people use for Interactive Student Notebooks. This set uses the formula Area = base x height.

  • Set 3 – Full-sized foldable activity – uses the formula Area = length x width.

  • Set 4 – Small-sized foldable activity – same as set 3, but smaller. It uses the formula Area = length x width.

  • Set 5 - Full-sized foldable activity using the formula Area = 1/2 base x height.

  • Set 6 - Small-sized foldable activity - same as set 5, but smaller. It uses the formula Area = 1/2 base x height.

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Total Pages
17 pages
Answer Key
Teaching Duration
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to see state-specific standards (only available in the US).
Solve real-world and mathematical problems involving area, volume and surface area of two- and three-dimensional objects composed of triangles, quadrilaterals, polygons, cubes, and right prisms.
Find the area of right triangles, other triangles, special quadrilaterals, and polygons by composing into rectangles or decomposing into triangles and other shapes; apply these techniques in the context of solving real-world and mathematical problems.


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