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Lesson Plan
Curated OER

Creature Design

For Teachers 5th
Fifth graders create mathematical creatures. In this geometry lesson, 5th graders create a creature from regular and irregular geometric shapes. Students review vocabulary and construct an original creature based on a rubric.
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Lesson Plan
Curated OER

Introducing Angles

For Teachers 6th
Sixth graders identify, compare and interpret the characteristics of polygons and angles in order to meet spatial sense, geometry and measurement standards. They also sort shapes into three categories, polygons (regular and irregular)...
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Lesson Plan
Curated OER

Stained Glass Polygons

For Teachers 4th - 6th
Young scholars follow directions to make a stained glass window design of regular and irregular polygons with specific geometric elements. For this geometry lesson plan, students also analyze other classmate's designs.
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Lesson Plan
Curated OER

Measuring Natural Objects

For Teachers 3rd - 5th
Students predict the measurement of objects. In this measurement lesson, students estimate the measurements of objects in a lab. Students measure irregular objects and generate scientific observations.
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Lesson Plan
Curated OER

Surface Area with Polydrons

For Teachers 3rd - 4th
Students explore measurements by analyzing geometric shapes. In this surface area lesson, students identify the terms volume, weight, perimeter and area in order to find the requested measurements of specific polygons. Students utilize...
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Lesson Plan
Curated OER

Quadrilateral Characteristics

For Teachers 4th
Fourth graders explain the characteristics of quadrilaterals and describe, identify and analyze characteristics and properties of geometric shapes.
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Worksheet
Curated OER

Regular or Irregular? Polygons

For Students 4th - 6th
In this polygon worksheet, students determine whether a set of given polygons are irregular or regular. A reference web site is given for additional activities.
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Worksheet
Curated OER

Area of Shapes

For Students 4th - 6th
In this geometry instructional activity, learners find the area of squares, rectangles, and non traditional shapes. Students complete 5 problems on this instructional activity. 
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Lesson Plan
Curated OER

Irregular Fractals

For Teachers 6th - 8th
Students study and research irregular fractals and construct a few based on their research. Students practice pattern recognition skills and plane geometry skills calculating dimensions on the Fractured Pictures activity.
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Lesson Plan
Curated OER

Powerful Polygons

For Teachers 2nd - 4th
Learners scan the classroom to find different common shapes. They listen as the teacher defines polygon and regular polygon. The teacher demonstrates regular polygons via the Internet and the "Math is Fun" web site. Students go outside...
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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.
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Worksheet
Math Mammoth

Applications of Quadratic Equations

For Students 6th - 8th
In 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.
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Lesson Plan
Curated OER

Move that Tower

For Teachers 9th - 11th
Students investigate ways to find the density of irregular shaped objects. In this physics lesson, students calculate density using its mass and volume. They explain why some objects float or sink in water.
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Lesson Plan
Virginia Department of Education

Area and Perimeter

For Students 8th Standards
Develop a strategy for finding the area and perimeter of irregular figures. Building on an understanding of finding area and perimeter of rectangles and triangles, learners apply the same concepts to composite figures. After practicing...
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Unit Plan
Curated OER

Density - To Float or Not to Float? That is the Question!

For Teachers 8th
Students investigate how to find the density of fluids and solids using math. Students also learn how to find the density of regular and irregular shaped objects.
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Lesson Plan
Pennsylvania Department of Education

Volume of Regular and Irregular Objects

For Teachers 5th
Fifth graders examine patterns and relate to equations to solve math problems.  In this patterns lesson, 5th graders diagram, graph, use models and use tables to solve equations for real world problems.
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Lesson Plan
2
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American Chemical Society

Finding Volume: The Water Displacement Method

For Teachers 6th - 8th Standards
We have formulas for finding the volume of geometric shapes, but what if the shape is irregular? Lesson describes how to find volume through water displacement. After a demonstration, scholars practice in small groups. Then analysis...
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Lesson Plan
Curated OER

Exploring Number and Operation in Secondary Mathematics

For Teachers 5th - 8th
Young geometers need a clear understanding of perimeter, volume, and area. This lesson provides a worksheet to help small groups of learners to calculate various measurements of objects and choose the proper units for measurement. It...
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Lesson Plan
Teaching Ideas

Volume

For Teachers 4th - 5th Standards
After understanding that the volume of a unit cube is one cubic centimeter, math masters determine the volume of four larger rectangular shapes. Then they take the challenge to figure out the volume of seven irregular, cube-containing...
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Lesson Plan
Curated OER

Looking at Circumference

For Teachers 6th - 8th
Young scholars 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.
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Lesson Plan
Willow Tree

Interior Angles, Exterior Angles, and Diagonals of Polygons

For Students 8th - 11th Standards
How does the number of sides of a polygon affect the angle measures? Learners recognize a pattern in finding the total measure of interior and exterior angles and the number of diagonals. They use the patterns to calculate the number of...
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Worksheet
Curated OER

Quadrilaterals and Other Polygons

For Students 6th - 7th
In this quadrilaterals and other polygons worksheet, learners name various polygons and then decide if each polygon is a quadrilateral. Students also decide is certain polygons regular or irregular.
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Lesson Plan
Curated OER

Who Am I? (Middle School)

For Teachers 3rd
Third graders complete a classroom game used to build understanding of two and three-dimensional shapes. Diagonals, sides, regularity, congruency, angle measurements, parallels, perpendicular, faces, and edges are a few of the vocabulary...
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Worksheet
Curated OER

Skills Review Worksheet

For Students 6th - 8th
In this skills review instructional activity, students answer 10 questions that spiral review volume, unit conversions, perimeter and area of an irregular figure, and sketching views from a base plan.

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