This site has quilter calculators to help you calculate yardage for borders, size side and corner setting triangles, backing, binding. Have this site on my phone and use it often while contemplating fabric in the quilt store.
Area of Parallelograms, Triangles, and Trapezoids - Coloring Activity
Find the area of a triangle using the formula. Find the missing dimensions of a triangle when given one dimension and the area. Find the area of a parallelogram using the formula. Find the area of trapezoids by composing or decomposing.
Quilter's Paradise - The Leader in Cutting and Kitting Services for the Quilting Market - Pieces to Yardage Area Calculator
Tired of having to perform mental gymnastics or making math errors in determining how much fabric you need in making your quilt? Quilter's Paradise has taken the most common quilt calculations and created simple-to-use calculators for them.
Students create their own math Minecraft book! Students use Cheez-it crackers to measure 1 square unit and calculate the area and perimeter of Minecraft figures. There are 2 tasks in this book. Task 1 asks to find the area and perimeter
Differentiated Area of Composite Figures Task Cards