Lesson Plan
Texas Instruments

The Determinant of a Matrix

For Teachers 9th - 12th Standards
Students calculate the determinant. In this algebra activity, students find the determinant and use to calculate the area of a triangle. They calculate the area of a quadrilateral in a plane.
Lesson Plan
Curated OER

Sharing Brownies: Fractions That Represent a Fair Share

For Teachers 3rd - 4th
Elementary graders discover the concept of fractional pieces of a whole. They investigate the meanings of fractions in everyday life and why they are used. Pupils divide brownies amongst each other to demonstrate the use of fractions...
Lesson Plan
Utah Education Network (UEN)

The Pasture and the Fence

For Teachers 3rd Standards
Beginning geometers use tiles and grid paper to draw and calculate perimeter and area. Rectangles of different sizes are created and then measured to build understanding. The one-inch grid sheet referenced is attached. 
Lesson Plan
Mathematics Assessment Project

Optimizing Coverage: Security Cameras

For Teachers 6th - 7th Standards
Are you being watched? Class members determine where to place security cameras protecting a shop. They then evaluate their own and several provided solutions.
Worksheet
Curated OER

Area and Periemeter

For Students 10th
In this geometry worksheet, 10th graders determine the area and perimeters of various quadrilaterals and triangles.  The one page worksheet contains ten problems.  Answers are not provided. 
Worksheet
Curated OER

Surface Areas

For Students 6th - 8th
For this math worksheet, students examine the measurements for the face of the triangle and trapezoid. Then they figure out the total surface area for each.
Worksheet
Curated OER

Area Measurement of Rectangles

For Students 4th - 5th
In this measurement worksheet, students study the pictures of rectangles and then give the area of each rectangle in centimeters.
Worksheet
Curated OER

Area and Perimeter of Rectangles

For Students 1st
In this measurement worksheet, 1st graders use the given measurements to find the perimeter and area of the six different rectangles pictured on the worksheet.
Worksheet
Curated OER

Calculating the Area of a Rectangle

For Students 4th
A quick definition and the formula for finding the are of a rectangle is provided at the top of this worksheet. After reading the description, 4th graders must find the area of the 3 given rectangles by adding or multiplying. This is an...
Worksheet
Curated OER

Perimeter of Shapes

For Students 3rd - 4th Standards
These squares and rectangles have length and width measurements with decimals; can young geometers determine the exact perimeter of each? Using a step-by-step example as guidance, they show work to find the perimeter of each of these...
Worksheet
Curated OER

Algebra: Area of a Parallelogram

For Students 5th - 6th
In this parallelogram worksheet, students find the area and perimeters and complete a chart to show the length, width and perimeter for different rectangles with a given area. Houghton Mifflin text is referenced.
Lesson Plan
Curated OER

Geometry, Measurement & Reasoning

For Teachers 7th - 9th
Students measure prisms and determine their volume. In this measurement and reasoning lesson, students estimate the volume and area of prisms. They measure given boxes. Students use paper to create prisms and cylinders. They determine...
Worksheet
Curated OER

Perimeter and Area of Rectangles

For Students 4th - 5th
In this perimeter and area activity, learners use the given measurements to find the perimeter and area of the rectangles pictured.
Unit Plan
Radford University

The Ultimate Kitchen Renovation

For Teachers 9th - 12th Standards
Cook up a nice new kitchen. Future designers apply quadrilaterals to design a new kitchen floor. They create a tessellation and determine the area of the pattern. As an added component and real-world application, they must stick to a...
Lesson Plan
Curated OER

Looking at Circumference

For Teachers 6th - 8th
Students understand where the number for pi comes from. They understand and use the formula for circumference. Students measure the circles given out and the diameters of those circles and record the results on their worksheet.
Worksheet
Geometry Accelerated

Coordinate Geometry Additional Practice

For Students 8th - 10th Standards
Your learners get extra practice using coordinates in calculating mid points, finding end points, deciding if points are collinear, calculations using slope concepts, writing linear equations, using triangles and quadrilaterals, and...
Assessment
Noyce Foundation

Pizza Crusts

For Teachers 6th Standards
Enough stuffed crust to go around. Pupils calculate the area and perimeter of a variety of pizza shapes, including rectangular and circular. Individuals design rectangular pizzas with a given area to maximize the amount of crust and do...
Lesson Plan
Curated OER

The Very Busy Spider

For Teachers 3rd - 4th
Youngsters explore visual arts by participating in a geometry identification activity. They read the book The Very Busy Spider and identify the techniques spiders use to create webs. Have you ever noticed that their webs are geometric...
Lesson Plan
Curated OER

Creating a Cyclic Quadrilateral

For Teachers 9th - 12th Standards
Identify and make conjecture about properties of cyclic quadrilaterals. Young scholars use the TI Navigator to create different shapes and draw conclusions.
Lesson Plan
Curated OER

Opposite Angles in a Cyclic Quadrilateral

For Teachers 9th - 12th Standards
Learners investigate cyclic quadrilaterals in this geometry lesson. They use Cabri Jr to explore the sum of the measures of opposite angles in a cyclic quadrilateral. The dynamic nature of Cabri allows students to form and verify...
Worksheet
Curated OER

Height of Trapezoid

For Students 8th - 9th
In this geometric area worksheet, students find the height of four trapezoids whose area and base are given. There is work space provided in this worksheet.
Worksheet
Curated OER

Area and Perimeter

For Students 10th
In this geometry worksheet, 10th graders use single variable equations to solve problems focusing on area and perimeter of triangles, trapezoids, parallelograms, rectangles, and hexagons.  The one page worksheet contains seventeen...
Lesson Plan
Curated OER

Tricky Traps

For Teachers 9th - 11th
Students create identify properties of trapezoids. In this geometry instructional activity, students calculate the area of given trapezoids and review the area formula for parallelograms. They draw a correlation between the area of a...
Lesson Plan
Curated OER

Orbital path of Landsat

For Teachers 6th - 8th
Students comprehend how Landsat satellites orbit teh Earth to produce images. They comprehend the elliptical path of satellites. Students recognize that a different orbital path is needed for different satellites to perform their tasks....