Length, Perimeter and Area

Making the transition from two-dimensional shapes to three-dimensional solids can be difficult for many geometry students. This comprehensive Common Core instructional activity starts with writing and graphing linear equations to define...

Pupils figure out how to be resourceful when tasked with finding the area of a triangle knowing nothing but its endpoints. Beginning by exploring and decomposing a triangle, learners find the perimeter and area of a triangle. They then...

A triangle, square, hexagon, and circle all have a perimeter of one unit. Eighth graders must attempt to find the area of each and arrange them in order from least to greatest areas. A terrific task for applying four different area...

How do you find arc lengths and areas of sectors of circles? Young mathematicians investigate the relationship between the radius, central angle, and length of intercepted arc. They then learn how to determine the area of sectors of...

Taking a lesson plan straight from the calculus classroom and making it algebra appropriate is the task of the day. Learners go step by step through calculating different area approximations underlines and curves, reviewing many key...

Using a similar process from the first instructional activity in the series of finding area approximations, a measurement resource develops the proof of the area of a circle. The problem set contains a derivation of the proof of the...

Students investigate area and perimeter of various shapes.  In this area and perimeter of various shapes instructional activity, students record how area of shapes change when a dimension is doubled, halved, quartered, etc.  Students...

Teach your class how calculate the perimeter and area of a square by creating graphs. They graph different polynomial functions using the Ti calculator.

Begin this study on the relationship between area and perimeter with the hook activity featured at the bottom of the "What Shape is Your Land?" link, which offers a fun optical trick to engage high schoolers. Learners should have a basic...

Does doubling mean everything doubles? Learners adjust the scale factor between two rectangles. Using the calculated measurements, pupils investigate the ratios between the lengths, perimeters, and areas of the rectangles.