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Lesson Plan
Curated OER

Relationships in Geometry

For Teachers 3rd - 5th
Students show the correlation between quadrilaterals, parallelograms, rectangles and squares.
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Worksheet
Curated OER

Quadrilaterals and Angle Sums: Reteach

For Students 5th - 6th
In this quadrilateral and angle sum worksheet, students review the five types of quadrilaterals. Students then find each missing angle measure and classify the figures as quadrilateral, parallelogram, rectangle, rhombus, square, or...
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Worksheet
Curated OER

Area of Triangle

For Students 3rd - 5th
In this area worksheet, students read and problem solve the area of 8 triangles. Students show their work on each problem on the worksheet.
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Lesson Plan
Illustrative Mathematics

Finding Areas of Polygons, Variation 1

For Teachers 5th - 9th Standards
An exercise in finding the area of polygons by decomposing into triangles and composing into rectangles is the focus of this resource. Make several copies of the worksheet for each participant. Ask learners to use colored pencils to...
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Organizer
Curated OER

Drawing Basic Shapes

For Students 4th - 5th
Challenge your geometry class with this connect-the-dots activity! Scholars use a ruler to complete simple shapes through connecting dots in 6 shape-identification problems, and identify it from 4 choices: triangle, square, rectangle, or...
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Worksheet
Houghton Mifflin Harcourt

Area - Homework 18.3

For Students 3rd - 5th Standards
Presenting perfect practice for finding perimeter and area of a rectangle. Three rectangles are depicted, three sets of sides are listed, and one real-life application described for which youngsters compute both values. The worksheet...
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Lesson Plan
Illustrative Mathematics

Lines of Symmetry for Quadrilaterals

For Teachers 3rd - 5th Standards
Explore how lines of symmetry help define different categories of quadrilaterals. Looking at a square, rectangle, trapezoid, and parallelogram, young mathematicians discover that each shape has its own, unique symmetry. Encourage your...
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Lesson Plan
Curated OER

The Pythagorean Puzzle

For Teachers K - 12th
An engaging hands-on activity is presented. Learners of all ages are addressed in thie unique plan. K-5 learners identify, name, and define a rectangle, square, triangle, and the concept of area. Older learners prove the Pythagorean...
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Worksheet
Curated OER

Number Pairs

For Students 3rd - 5th Standards
As you introduce graphs and coordinate pairs, use this guided activity to get scholars started. They reference an example before recording number pairs to identify the location of 12 letters on a grid. Next, learners examine shapes on a...
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Interactive
Scholastic

Study Jams! Area of a Triangle

For Students 4th - 6th Standards
Even though there is a wide variety of different triangles in the world, knowing a single equation allows us to find the area of each and every one of them. Follow along with this step-by-step presentation as Zoe clearly models how to...
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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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Worksheet
Curated OER

Going to the Dogs and Horsin' Around

For Students 4th - 5th
In these rectangle perimeter worksheets, students complete two worksheets for perimeter. Students answer four questions for each rectangular pen they create for a dog and horse pen.
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Lesson Plan
Curated OER

Paper Pool

For Teachers 5th - 8th
Students analyze the measurements of rectangles. In this analysis lesson, students will investigate patterns by looking at ratios. Students will also hypothesize the probability of a ball going into a certain pocket when playing pool....
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Lesson Plan
Curated OER

What a SHAPEly Fit!

For Teachers 3rd - 5th
Students identify and explore the attributes of polygons. They design and create a quilt square using polygons, and produce a class quilt.
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Lesson Plan
Curated OER

"Polly"gon Pockets

For Teachers 3rd - 5th Standards
Explore polygons with your elementary learners. Divide the class in 12 to configure the polygon puzzle before them. They list the attributes of each type of polygon they see, and if there's time, they jump on the interactive website...
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Interactive
Scholastic

Study Jams! Area of Irregular Figures

For Students 5th - 8th Standards
Painting an irregular figure can be tricky if we don't know the exact area. This interactive presentation reveals that irregular figures can be broken into smaller, simple figures that use the area formulas. Go through two examples,...
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Activity
Computer Science Unplugged

Ice Roads–Steiner Trees

For Teachers 4th - 12th
As an introduction to Steiner Trees, class members are challenged to find the shortest paths to connect multiple points. The teacher introduces the problem by showing how to connect three points. Groups then go outside and construct a...
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Lesson Plan
Curated OER

Prime and Composite Number Mini Lab

For Teachers 3rd - 5th
Elementary schoolers determine the attributes of prime and composite numbers. Pupils, working in pairs, participate in an activity in which they use manipulatives to show the rectangles that can be made from square tiles. They practice...
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Lesson Plan
Curated OER

Complexity Madness

For Teachers 5th
After introducing the concept and formula for finding the area of a square, try this lesson. Fifth graders will use their prior knowledge to break apart various shapes in order to determine area. This lesson includes several examples,...
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Lesson Plan
Houghton Mifflin Harcourt

Introducing the Concept: Triangles and Quadrilaterals

For Teachers 5th - 7th Standards
Guide your geometers through the process of constructing polygons. They learn how to draw triangles, squares, parallelograms, rectangles, rhombuses, and trapezoids with specified angles using a protractor and a ruler. The lesson plan...
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Worksheet
Curated OER

Explore Perimeter and Area - Homework 18.1

For Students 3rd - 6th
In this geometry worksheet, students complete a homework assignment in which they draw rectangles that have the same area but different perimeters and vise versa. They draw a rectangle with a given area and perimeter.
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Worksheet
Curated OER

Greatest and Least Area - Enrichment 18.3

For Students 4th - 5th
In this greatest and least area game worksheet, students cut out the cards, draw a card and record the measurement in the length or width column of a graph. When all columns have been filled, they calculate the areas to find the winner...
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Lesson Plan
Curated OER

Graph Paper Patterns

For Teachers 3rd - 8th
Young artists divide a piece of graph paper into sections using rectangles, squares, and triangles. They then fill each section with patterns of shape and color. Elementary graders describe how their patterns are organized. Secondary...
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Lesson Plan
Curated OER

2-D polygons

For Teachers 3rd - 6th
A hands-on activity uses the Zome modeling system, and helps young geometers either learn or review their knowledge of polygons. Students build as many different 2-dimensional polygons as possible: triangle, square, rectangle, pentagon,...

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