Curated OER
Measuring Volume/Capacity Using the Metric System
There is more than one way to measure an amount, as learners discover by applying multiple measurement tools in these activities. Centimeter cubes, cylinders, beakers, and measuring cups are used to find the volume of regular and...
Curated OER
Turn Up the Volume
Measuring volume can be a mystery for 5th graders, but this hands-on activity gives the gift of discovery. The volume of simple rectangular solids and irregular shapes are calculated through various methods including displacing liquid in...
Curated OER
Irregular Word Fluency, Word Baseball
Learners review irregular words and build fluency by playing a game. In this irregular word lesson plan, students label a variety of blank index cards, then post the index cards around the room as signs that create a diamond shape....
Curated OER
Area of irregular Polygons: Historical Motivator - Lewis and Clark Adventure
Seventh graders find the area of irregular polygons. For this lesson on calculating area, 7th graders use the adventures of Lewis and Clark as motivation to learn how to calculate the area of irregular polygons.
Curated OER
Math Worksheet: Area (3)
In this area worksheet, students find the area of one irregular polygon. Students find the area by dividing the irregular polygon into multiple regular polygons.
Curated OER
Area of Irregular Polygons
In this geometry worksheet, 10th graders determine the area of irregular polygons. The one page worksheet contains three problems. Solutions are provided.
Curated OER
Polygon People
Students identify polygons. In this polygon people lesson, students draw required shapes and construct a polygon person. They identify each shape and its characteristics. The lesson may be extended by allowing students to explore the...
Pennsylvania Department of Education
A Geometric Scavenger Hunt
Fifth graders connect their knowledge of polygons and polyhedrons. In this geometric shapes lesson, 5th graders identify and classify two- and three-dimensional objects. Students construct a polyhedron out of polygons and describe their...
Curated OER
Geometry Practice: Area of Polygons #9
In this area of polygons worksheet, students find the area of 12 polygons. Each shape is drawn on a grid. The area of each square on the grid is given. Problems are all multiple choice.
Curated OER
Area of Combined Shapes - Turtle Combo
Students graph polygons using the name and number of sides. In this geometry lesson plan, students identify the formula to calculate the area and perimeter of polygons. They relate the formula to different polygons and shapes.
Utah Education Network (UEN)
If the Shape Fits
Geometers juggle the idea of polygons. Using a game and manipulatives, they make trapezoids and irregular polygons. They review the algorithms for finding the areas of squares and rectangles. On day one, they find the area of trapezoids,...
Curated OER
Recognize Area as Additive - Guided Lesson
Not all area word problems are straightforward. Here are some trickier ones to challenge your beginning geometers. They determine the area of two irregular shapes and one rectangle using given measurements. Remind scholars to use square...
Curated OER
Jack and The Beanstalk Estimation
Introduce the day's instructional activity by reading Jack and The Beanstalk by Richard Walker, and then review the concept of area with your class. We don't always need rulers to measure, though! Teach learners how to use their hands to...
Illustrative Mathematics
Polygons
Identify shapes based on their attributes. Second graders are tasked to color triangles, quadrilaterals, pentagons, and hexagons specific colors. The one thing these shapes have in common? They are all polygons.
Utah Education Network (UEN)
Geometry
Shape one's understanding of geometry using the resource. The sixth of seven chapters in 6th Grade Math focuses on geometry principles. Future mathematicians learn to find the area of parallelograms, trapezoids, triangles, and other...
Curated OER
Volume Lab
How can we find volume if it a shape isn't easy to measure? Investigate methods for determining this as the volume of regular and irregular objects is explored in several stations. Learners discover that when the standard formula for...
Math Worksheets Land
Recognize Area as Additive - Step-by-Step Lesson
Do your scholars have a basic understanding of area calculations? Give them an extra challenge with this irregular shape missing one of its length measurements. Using the given lengths, they figure the area of the entire shape. The...
Curated OER
The Center of Mass
Students determine the center of mass of two irregularly shaped objects, determine when the center of mass is inside or outside the boundaries of the object, determine when and/or why an object is stable, balanced, unstable or unbalanced.
Curated OER
Keeping Us in Stitches Activity: Crazy-Quilt Collage Design
Students create collages using the irregular-shaped and sized pieces, decorative stitching, and applied or painted motifs that reflect the Crazy-Quilt style, and explain how and why their design fits into that style.
Curated OER
Scientific Measurement Exercise
Students measure irregularly shaped bones, once using a variety of measurement methods and tools, and then again using standard conventions and metric tape measures. They explore firsthand that standardizing data collection makes...
Curated OER
Recognizing Right Angles
In this right angles worksheet, students analyze 9 geometric or irregular shapes. In the box below each picture, students put a "tick" if there is a right angle or a "cross" if there is not.
Curated OER
Pop-it...Stop-it
Learners observe how certain geometric shapes can be used to make some structures rigid and others flexible. The activity involves construction of a 30-60 right triangle, folding while following directions, and identifying polygons.
Curated OER
Exploring Areas of Irregular Polygons
Students solve for the area of different polygons. In this geometry lesson, students identify and differentiate between regular and irregular polygons. They use properties of irregular polygons to solve problems.
Curated OER
Chinese Tangrams
Students research the history of Chinese tangrams and complete tangram activities. In this tangram lesson, students complete Internet research to learn the history of Chinese tangrams. Students construct a set of tangrams, compare the...
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