Lesson Plan
Curated OER

Area Unit

For Teachers 9th - 11th
Students solve the area for parallelograms,squares, rectangles, trapezoids, and triangles. In this geometry lesson, students compare and contrast two dimensional shapes and apply their properties to solving real life scenarios. This is a...
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...
Lesson Plan
Curated OER

Investigating Area Using Tangrams

For Teachers 10th
Tenth graders connect the history of geometry to problem solving. In this geometry lesson, 10th graders investigate polygons through hands on manipulatives and solve problems relating to parallelograms and triangles. They calculate the...
Lesson Plan
Curated OER

Triangle Passing and 3-Player Kick and Score

For Teachers 1st - 5th
Young scholars practice soccer skills. In this soccer lesson, students use cones and a foam ball to practice kicking and trapping in small groups. Young scholars use a timer to see how quickly their group can pass the ball around the...
Worksheet
Curated OER

Find the Surface Area of the Triangle

For Students 9th - 10th
In this geometry worksheet, students are asked to solve for the surface area of a triangle and a trapezoid. They are fiven the height and base. There are 2 questions with an answer key.
Lesson Plan
Curated OER

Area of Polygons

For Teachers 9th - 11th
In this geometry worksheet, students solve for the area of a triangles given the base and the height. There are 6 questions with an answer key.
Lesson Plan
Curated OER

Angles of a Triangle

For Teachers 9th - 12th Standards
Learners explore the measures of the angles of a triangle in this geometry lesson plan. They use Cabri Jr. to investigate the sum of the measures of the interior angles of a triangle, and examine the relationships between the interior...
Lesson Plan
Curated OER

Exploring Area and Perimeter

For Teachers 4th - 6th
Two students are blindfolded and each receives a cardboard square, one with pompoms glued around the edge and one with pompoms glued all over the surface. They identify what they feel. The class discusses perimeter and area of polygons....
Lesson Plan
Curated OER

Areas and Volumes

For Teachers 10th
Tenth graders calculate the area and the volumes of polygons. In this geometry lesson, 10th graders review the formulas used to solve for the area and volume and explain to the class how they arrived at their answer. They search online...
Worksheet
Curated OER

Squares, Shaded Area

For Students 9th - 12th
In this secondary mathematics worksheet, students are provided with a figure that consists of squares and isosceles triangles and must determine the percent of the figure that is shaded. The one page worksheet contains one problem with...
Worksheet
Curated OER

Geometry Standardized Test Practice

For Students 10th
In this angles and figures review worksheet, 10th graders solve and complete 39 different multiple choice problems. First, they find the length of a line between two given points. Then, students name the type of transformation and the...
Worksheet
Math Mammoth

Applications of Quadratic Equations

For Students 6th - 8th
For this math activity, students find the areas of a triangle, rectangular box, and the irregular shape. They take a portion of the area away from the source block.
Worksheet
Math Mammoth

Geometry Problems

For Students 6th - 8th
In this math worksheet, middle schoolers find the area of the triangles, the perimeter of the irregular shape, and the diagonal of the cube.
Worksheet
Curated OER

Extra Practice 7.1: Properties of Exponents

For Students 9th - 12th
In this properties of exponents worksheet, students multiply and divide terms with variables and exponents.  They find the area of triangles and circles.  Students determine the volume of given shapes.  This two-page...
Worksheet
Curated OER

The Area of a Triangle

For Students 5th - 6th
In this area of a triangle worksheet, students solve 30 problems in which the area of triangles are calculated. There is instruction on the page. This is intended for on-line use but can be done on paper.
Lesson Plan
Curated OER

Math: Equal Area Triangles

For Teachers 6th - 8th
Students examine a math worksheet and determine how to divide a single triangle into four of equal area. Using geometric principles, they sketch two additional ways to divide into into four equal triangles. To conclude, students...
Lesson Plan
Curated OER

Triangle Explorer

For Teachers 3rd - 6th
Pupils compute the area of triangles in a computer program. For this measurement lesson plan, students complete 5 easy, 5 medium, and 5 hard problems.
Lesson Plan
Curated OER

Discovering the Area and Perimeter of Triangles

For Teachers 8th
Eighth graders identify how to find the area and perimeter of rectangles and triangles. They discuss their understanding of area and perimeter and how the two concepts are applied in the real world. Finally, 8th graders determine the...
Worksheet
Curated OER

Area, Perimeter, and Volume

For Students 5th - 7th
In these area, perimeter, and volume worksheets, students calculate to find the area, perimeter, or volume of the various figures. Students complete 30 problems.
Lesson Plan
Curated OER

Area graphics for 7th graders

For Teachers 6th - 7th
Young scholars randomly select dimensions for three geometric shapes (square, right triangle and circle). From the graphs they compare and contrast the graphical results of each shape.
Lesson Plan
Curated OER

Perimeter and Area of 2D Shapes

For Teachers 6th - 7th
Students find the perimeter and area of circles, triangles, and rectangles. In this perimeter and area lesson plan, the teacher gives students formulas for each shape and measurement and works through examples on the board. While no...
Lesson Plan
Curated OER

Areas of triangles, trapezoids, and rhombi

For Teachers 10th - 12th
Young scholars solve geometry problems. In this area and perimeter lesson, students use formulas to solve problems from the textbook. 
Lesson Plan
Curated OER

Simply Similar at Sea: Simple Triangles

For Teachers 10th
Tenth graders answer a variety of problems based on similar triangle and learn about the rule of thumb. They will test the rule of thumb by estimating the distance to an object in the classroom.
Lesson Plan
Curated OER

Congruent Triangles - Is This Enough Information?

For Teachers 7th
Seventh graders examine congruence postulates and apply knowledge to triangles in the world around them.

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