Lesson Plan
Government of Hong Kong

Areas and Volumes - 2D Shapes

For Teachers 3rd - 6th Standards
Unfortunately for young mathematicians, the world isn't made entirely of parallelograms, triangles, and trapezoids. After first learning the area formulas for these common shapes, students apply this new knowledge to...
Lesson Plan
Curated OER

The Very Busy Spider

For Teachers 3rd - 4th
Youngsters explore visual arts by participating in a geometry identification activity. They read the book The Very Busy Spider and identify the techniques spiders use to create webs. Have you ever noticed that their webs are geometric...
Lesson Plan
Curated OER

How To Find the Area of a Square And Rectangle

For Teachers 4th - 6th
Learners practice using the formula to calculate the area of a square or triangle. They participate in large group guided practice using simple area of squares problems then complete a series of problems calculating the area of rectangles.
Lesson Plan
Curated OER

Finding Area

For Teachers 4th
Fourth graders explore how to find the area of a rectangular object. As a class, they discuss definition of area and strategies for finding area. The teacher models finding the area of an object by counting squares. Students observe...
Lesson Plan
Curated OER

Perimeter and Area

For Teachers 5th
Fifth graders identify the area and perimeter of a rectangle. In this perimeter lesson, 5th graders use geoboards and rubber bands to construct various rectangles. Students use the formula to calculate area and perimeter of the...
Lesson Plan
Curated OER

Building Storm Shelters

For Teachers 6th
Sixth graders explore area and perimeter. In this online interactive area and perimeter instructional activity, 6th graders investigate why the perimeter of rectangles can vary considerably even when the area is held constant. Students...
Lesson Plan
Curated OER

Area And Perimeter Using Pentominoes

For Teachers 3rd
Third graders engage in an enrichment lesson exploring the concepts of area and perimeter. They construct new pentominoes that are 3 times the size of normal ones and then identify the area and perimeter measurements. They then create a...
Lesson Plan
Curated OER

Mondrian: Rectangles, Squares, & Balance, Oh My!

For Teachers 2nd - 3rd
Learners investigate the art of Piet Mondrian. They conduct Internet research, discuss Mondrian's artwork, play a computer game, and create an original work of art using Appleworks 6.
Lesson Plan
Curated OER

Using Square Tiles to Investigate Numbers

For Teachers 5th
Fifth graders model and distinguish between prime and composite numbers. Students are paired up with another classmate to complete this instructional activity. Students are assigned different numbers to work with, they use square tiles...
Lesson Plan
Curated OER

Measurement: Finding Areas of Rectangles

For Teachers 4th - 5th
Students construct the formula for the area of a rectangle.
Lesson Plan
Curated OER

Least Squares Fit Line

For Teachers 8th - 12th
Students estimate the least squares fit line for a set of data. They understand error involved in least square fit lines. They solve application problems using least square fit lines.
Lesson Plan
Curated OER

Squares to Compare

For Teachers 3rd - 4th
Students investigate how to draw and classify two and three dimensional figures (squares, triangles, rectangles.)
Lesson Plan
Curated OER

Can You Make Quadrilaterals?

For Teachers 2nd - 4th
Students identify and describe squares, rectangles, parallelograms, trapezoids, and kites. In this quadrilaterals lesson plan, students put the quadrilateral shapes into a chart.
Lesson Plan
Curated OER

Pondering Polygons

For Teachers 4th - 6th
In this polygon worksheet, learners observe models of polygons. Students must identify the characteristics of polygons such as a rectangle, pentagon, trapezoid, square and rhombus. They determine if the statement naming the polygon is...
Lesson Plan
Curated OER

You Can Count on Squares!

For Teachers 4th
Fourth graders engage in and explore to develop mathematical, specifically algebraic, ideas. Although the tasks are built around measurement, they are algebraic to the extent that they require 'formulae' to be derived form the geometric...
Lesson Plan
Curated OER

Squaring a Binomial Lesson

For Teachers 9th - 10th
Young scholars practice squaring binomials.  For this Algebra I lesson, the students use the "Square of Fun" to experience a concrete visualization of the process of squaring a binomial.  The lesson assumes that young...
Lesson Plan
K20 LEARN

Quadrilateral Quandary

For Teachers 10th
Classify quadrilaterals quickly. After playing a game to identify quadrilaterals, your young scholars should come away with knowledge of the properties of quadrilaterals. They then apply this knowledge to create a decision tree to ease...
Lesson Plan
Curated OER

Introducing Powers and Models

For Teachers 4th - 6th
Young scholars construct two dimensional models to illustrate squared numbers. For this geometry lesson, students use graph paper and an x/y axis to build squares exponentially. Young scholars identify powers and relationships between...
Lesson Plan
Curated OER

Geometric Shapes

For Teachers 1st - 2nd
For this geometry worksheet, young scholars see a train design with the engineer. All are made with circles, triangles, rectangles or squares. Students read the directions about which color each shape should be.
Lesson Plan
Curated OER

Nets And Surface Area

For Teachers 4th - 6th
Upper graders investigate how to find the surface area when using two-dimensional shapes. They conduct an investigation in groups while working sample problems given during class discussion with the teacher. They also review how to...
Lesson Plan
Curated OER

Volume Worksheet I

For Teachers 8th - 9th
In this volume worksheet, students recognize three-dimensional figures, identify the proper volume formula, and then solve the equation by inserting information from a diagram into the formula. Students solve six equations.
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Curated OER

Halves, Thirds, and Sixths

For Teachers 2nd - 4th Standards
An excellent activity that effectively pulls together the concepts of area, fractions, and equivalent fractions! Using 3x2 rectangular arrays, 3rd graders are introduced to the concept of area in terms of square units. Building on this...
Lesson Plan
Curated OER

Looking Through the Algebraic Lens

For Teachers 3rd - 5th
Students work with rectangles to find generalizations for adding and subtracting odd and even numbers in part one of the lesson. In part two, students use geoboards to construct polygons, look for patterns, and find a general rule.
Lesson Plan
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Curated OER

Areas of Geometric Shapes with the Same Perimeter

For Teachers 7th - 9th Standards
A triangle, square, hexagon, and circle all have a perimeter of one unit. Eighth graders must attempt to find the area of each and arrange them in order from least to greatest areas. A terrific task for applying four different...

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