Interactive
Curated OER

Area of Shaded Region (rectangles and triangles)

For Students 9th - 12th
In this online math activity, students determine the area of shaded regions within rectangles and triangles. This excellent resource allows the students to check their answers, and to get "hints" should they run into difficulties. A...
Lesson Plan
Curated OER

Area

For Teachers 3rd
Third graders find areas of rectangles by using square units, apply knowledge to real-life situations, and simplify method of counting square units by multiplying the length times the width.
Worksheet
Curated OER

Area of Squares Word Problems

For Students 2nd - 3rd
Each of these rectangles is split into rows and columns. Can your scholars determine how many squares result?  The 10 word problems have space for learners to draw the shape and split it up to answer the question. Remind them that...
Worksheet
Curated OER

Using Tiling to Find Area

For Students 3rd - 5th
By splitting rectangles into four equal parts, scholars practice calculating area and determining side length. They begin by determining the area of each rectangle before segmenting it. Then, they use the space provided to split it into...
Lesson Plan
Curated OER

Finding Perimeter and Area

For Teachers 3rd - 5th
Geometers find the perimeter and area of rectangles. They discuss the definitions and characteristics of rectangles and squares. In groups, they use yarn to discover the perimeter of squares and rectangles. They count cubes to explore...
Worksheet
Curated OER

Using Tiling to Find Area

For Students 3rd - 4th
There is only one area calculation problem here, and the explanation is detailed below; consider projecting this as an all-class warm up. Scholars assess a rectangle with given length and width, calculating its area. Next, they break it...
Worksheet
Curated OER

Perimeter of Shapes

For Students 3rd - 4th Standards
These squares and rectangles have length and width measurements with decimals; can young geometers determine the exact perimeter of each? Using a step-by-step example as guidance, they show work to find the perimeter of each of these...
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.
Worksheet
Curated OER

Math Maven's Mysteries

For Students 5th - 7th
In these math word problem worksheets, students help solve the mystery about 'The Case of the Shifting Shapes.' Students solve the problem by completing a rectangle area problem and also determine where Rex Tangle will appear next.
Lesson Plan
Curated OER

Complexity Madness

For Teachers 5th
Discuss different techniques for finding the area of a geometric shape, with a great visual guide. Using a real life example, learners calculate the area of a rectangle and a square. 
Lesson Plan
Curated OER

Exploring Perimeter

For Teachers 3rd - 5th
Students explore perimeter. For this geometry and measurement lesson, students create squares and rectangles using given perimeters. Students construct four sided shapes with given perimeters using the computer program "Math Keys:...
Worksheet
Curated OER

Sorting and Counting Geometric Shapes

For Students 2nd
Practice counting, tallying, and sorting shapes with this math challenge. Scholars examine a group of shapes, tallying the amount in four categories: quadrilaterals, parallelograms, rectangles, and squares. Then, they color in any shapes...
Worksheet
Curated OER

Understanding Categories of Shapes

For Students 2nd - 3rd
What are these shapes? Here are four shapes with some common attributes: they each have four parallel sides and four vertices. Scholars identify a rectangle, rhombus, square, and quadrilateral. Because there is an explanation written...
Worksheet
Curated OER

Attributes of Shapes Guided Lesson Explanation

For Students 1st
Triangles, circles, and rectangles are featured in a colorful, one-page worksheet that defines and illustrates these shapes. Read the explanations with your first graders and have them count the number of shapes in a given box. Since the...
Worksheet
Curated OER

Circle, Count, and Color Shapes

For Students Pre-K - 1st
Get your geometers familiar with shapes as they circle, color, shade, and count sets of rectangles, triangles, circles, squares, and trapezoids. For each of the 10 sets, they examine six figures and follow instructions to mark the...
Worksheet
Curated OER

Weight: Heavy or Light Worksheet

For Students K - 1st
Which is heavier, a ladybug or a ship? Learners will have fun with this weight comparison worksheet, that uses visuals to help them determine which is heavier or lighter. They complete two comparisons for each. Lastly, they examine four...
Worksheet
Curated OER

Label the Shape Worksheet

For Students K
Kindergartners demonstrate their ability to identify seven different shapes by labeling each of the 28 examples on the worksheet. Learners must be able to identify rectangles, diamonds, squares, ovals, triangles, circles, and pentagons.
Organizer
Curated OER

Quick Recognizing Shapes Guide

For Students 1st - 3rd
Although there isn't anything for kids to complete in this shapes handout, they can use it as a guide for drawing shapes and recognizing their attributes. There are eight shapes described here: circle, oval, triangle, rectangle,...
Lesson Plan
EngageNY

More Problems on Area and Circumference

For Teachers 7th Standards
Perimeter check! Pairs work on finding the areas of semicircles and quarter circles using a relationship with squares. The problems challenge pupils to find areas of composite figures made from rectangles, semicircles, and quarter circles.
Unit Plan
Arizona Department of Education

Area and Perimeter of Regular and Irregular Polygons

For Teachers 3rd - 6th Standards
Extend young mathematicians' understanding of area with a geometry lesson on trapezoids. Building on their prior knowledge of rectangles and triangles, students learn how to calculate the area of trapezoids and other...
Worksheet
Curated OER

Perimeter and Area of Rectangles (A)

For Students 4th - 6th
In this perimeter and area worksheet, students calculate the perimeter and area of rectangles that are measured in centimeters containing numbers with decimals. Students complete 4 problems.
Worksheet
Curated OER

Area of Squares and Rectangles

For Students 5th - 8th
In this math worksheet, students complete 16 problems where they find the area of squares and rectangles with whole and decimal numbers. This worksheet would be an excellent homework assignment.
Worksheet
Curated OER

Area of Rectangles in Word Problems

For Students 3rd - 4th
Although there are grammatical errors in these word problems, they provide a good opportunity for scholars to practice calculating area. Each of the 10 scenarios gives measurements of a specific rectangular space, including units....
Lesson Plan
Illustrative Mathematics

Rectangle Perimeter 1

For Teachers 5th - 7th Standards
Creating an expression to represent the perimeter of a rectangle is a fundamental beginning skill in learning how to use and define variables. This activity starts with the basics and can be followed up with additional tasks. 

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