Lesson Plan
Curated OER

Areas of Polygons

For Teachers 9th - 12th Standards
Young mathematicians calculate the area of polygons in this algebra lesson. They find the determinant as they calculate the areas for triangles and quadrilaterals. They also use scalar multiplication to find the determinant.
Lesson Plan
Texas Instruments

The Determinant of a Matrix

For Teachers 9th - 12th Standards
Students calculate the determinant. In this algebra instructional 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

Geometry Fun

For Teachers 3rd - 5th
Students learn the basic definitions of a quadrilateral, parallelogram, rectangle and square and explain the relationship/classification process between them.
Lesson Plan
Curated OER

Travel Triangles

For Teachers 8th - 11th
Students demonstrate and understanding of the three types of angles using triangles and quadrilaterals. In this angles lesson plan, students learn about acute, obtuse and right angles. They use cut-outs to find the areas of triangles and...
Worksheet
Curated OER

Forming Equations

For Students 8th - 9th
In this math learning exercise, students write the equations for the interior angles of triangles and quadrilaterals. Students are given the total number of degrees in each shape and a variable value for the angles.
Worksheet
Curated OER

Angles in Polygons

For Students 10th - 12th
In this angles in polygons instructional activity, students determine the value of a missing angle measure. They find the value of interior angles and exterior angles. Polygons include triangles, quadrilaterals, pentagons, and hexagons....
Worksheet
Curated OER

Make Shapes and Describe Their Features

For Students 3rd - 4th
In this shapes and their features activity, students construct triangles, quadrilaterals, pentagons, hexagons, and heptagons using four designated shapes. In this problem solving activity, students create as many of the types of shapes...
Worksheet
Curated OER

Geometry Worksheet- Angle

For Students 9th - 11th
In this geometry worksheet, learners solve questions dealing with angles, triangles, and quadrilaterals. They calculate the missing angle. There are 2 questions.
Lesson Plan
Curated OER

Learning by Logic - Total Surface Area

For Teachers 3rd - 6th
Geometers calculate the area of plane surfaces using the formulas for the area of a square, rectangle, and triangle. They develop the formula for calculating the total surface area of two geometric solids: the cube and rectangular prism.
Lesson Plan
Curated OER

Shapes!

For Teachers K
Explore five basic shapes- square, rectangle, triangle, circle, and stars with youngsters. They will participate in hands-on activities, draw each shape, name each shape. They also get to eat things that are in the shapes they have just...
Lesson Plan
Curated OER

Math On Your Lap Quilt

For Teachers 2nd
Get creative juices flowing when you allow groups to figure out a procedure for how to find the area of squares and rectangles. They may use the individual patchwork blocks, or they may design one using the Design Template.
Lesson Plan
Curated OER

Multiplication and Areas

For Teachers 3rd - 5th
Upper graders solve problems involving measurement of squares and rectangles to practice multiplication skills, finding area, and calculating prices and percentages. A performance assessment is included.
Lesson Plan
Curated OER

Measurement: Finding Areas of Rectangles

For Teachers 3rd - 5th Standards
Gardening geometers construct the formula for the area of a rectangle by viewing a video revolving around two young people, their lawn mowing business, and their need to charge by the square meter. A relevant real-life application lesson!
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
Curated OER

Evergreen Tree

For Teachers 1st - 2nd
Learners use a ruler to make measurements, and to create triangles and a rectangle. They take the shapes they've made and assemble them into an evergreen tree image. This simple, yet effective, lesson would be ideal for young learners...
Lesson Plan
Curated OER

Shapes and Tools

For Teachers K - 1st
Young learners view different shapes drawn by the teacher on the board. The teacher identifies each shape by name and discusses the importance of knowing the difference between shapes when building something. The pupils complete the...
Lesson Plan
Curated OER

Weave a Wreath

For Teachers 4th - 6th
Students employ simple measuring and weaving techniques. Then they experiment with the negative and positive space of a cutout. Students also follow directions to complete a multi-step process that results in an attractive holiday...
Lesson Plan
Curated OER

Indiana Applied Skills Assessment Sample

For Teachers 5th
In this Applied Skills Assessment worksheet, 5th graders complete a sample state assessment for Language Arts and Mathematics for 5th graders. They read a writing prompt and complete a writing activity that follows, answer various types...
Worksheet
Curated OER

The Coordinate Plane

For Students 6th - 8th
Use this Saxon math coordinate plane instructional activity to have your learners utilize a graphing calculator, equate the vertices of a rectangle, and then graph their conclusions as well as answer a variety of fill in the blank...
Worksheet
Curated OER

Section 2.5 - Problem Solving (Part B)

For Students 7th - 12th
Trying to figure out the perimeter of a geometric figure? Here are a few word problems to set up algebraic equations to solve for perimeter. There are also some word problems to set up algebraic equations to solve for angles in a...
Worksheet
Curated OER

Rectangles and Shapes

For Students K - 3rd
A rectangles and shapes online worksheet in which young learners determine what fraction is shaded in eight rectangles. They also answer three word problems and color the parts shown and requested on five shapes. They get immediate...
Worksheet
Houghton Mifflin Harcourt

Area - Practice 18.3

For Students 4th - 5th Standards
In a straightforward assignment, learners simple calculate the area or perimeter of 14 rectangles. For the first six, a rectangle is drawn with the lengths of the sides provided. For the next six, lengths of sides are simply listed to...
Worksheet
Curated OER

Perimeter and Area of Complex Figures

For Students 4th - 6th
In this perimeter and area activity, students solve 6 word problems where they must determine the perimeter or area of complex figures. Diagrams are provided and real world applications like gardens and carpeting are used in the problems.
Lesson Plan
Curated OER

Geometric Shapes

For Teachers 1st - 3rd
Connect geometric shapes to your learners' lives with this worksheet. In order to complete this worksheet, young scholars must discover examples of triangles, squares, and circles at school, at home, and outdoors and list them on a...

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