Lesson Plan
Curated OER

The Corner Problem

For Teachers 11th - Higher Ed
Students explore the concept of the corner problem. In this corner problem instructional activity, students use the TI-NSpire to determine the maximum length a rod can be and still pass horizontally around a corner. Students use similar...
Lesson Plan
Curated OER

Cutting Corners

For Teachers 2nd
Second graders examine two-dimensional shapes using their characteristics. In this shapes lesson, 2nd graders identify similarities and differences by using cut out shapes, diagrams, mirrors, and graphic organizers.
Lesson Plan
Curated OER

Investigation: Area of Geometric Shapes

For Teachers 4th
Fourth graders explore geometry by utilizing pattern blocks. In this pattern activity, 4th graders analyze two separate pattern block shapes and discuss which one is bigger and smaller. Students collaborate in small groups to create...
Lesson Plan
Curated OER

An Introductions to Congruent Polygons

For Teachers 8th - 10th
Students differentiate between similar and congruent polygons. For this geometry lesson, students define the theorems and reasons for polygons similarity and congruence. They are given pictures and patterns to differentiate and identify.
Lesson Plan
Curated OER

Investigating Scale Factors with the Geometer's Sketchpad

For Teachers 7th - 12th
Students use Geometer's Sketchpad to examine the scale factor when in is applied to the length of a figure's sides. They look at how the scale factor affects the side lengths, perimeter, and area of the figure that result. They work with...
Lesson Plan
Curated OER

Between the Rivers

For Teachers 2nd
Second graders compare and contrast historical American cultures.  In this American history lesson, 2nd graders participate in reading, writing, oral, and hands on activities. Students discuss the similarities and differences...
Worksheet
Curated OER

New York State Testing Program: Mathematics Test Book 1

For Students 7th - 8th
In this mathematics test bookelt, students solve problems studied during the year.  They solve problems covering topics such as probability, angle intersection, commission, percent, exponents, similar figures, and reading and...
PPT
Curated OER

Hoops: Grade 4 and 5

For Teachers 4th - 5th
4th-5th graders will compete in a game similar to Jeopardy in which they answer questions from a variety of subject areas including science, language, and math. The questions are based on an extremely wide variety of topics, so would be...
Worksheet
Curated OER

Pythagoras' Theorem

For Students 8th - 9th
In this Pythagorean Theorem worksheet, students use the Pythagorean Theorem to determine the length of a missing side. They calculate surface area of a prism. This two-page worksheet contains 4 multi-step problems.
Lesson Plan
Curated OER

Chambered Nautilus

For Teachers 6th - 8th
Students create sets of similar triangles which, when fixed together with a piece of Scotch tape, form a spiral-like, segmented shape, slightly similar to the cross section of the shell of a nautilus.
Lesson Plan
Curated OER

Geometry

For Teachers 9th - 12th
Students examine how similar triangles have same angle measures.
Lesson Plan
Alabama Learning Exchange

Trapezoids: What's Equal or Right About Them?

For Teachers 8th - 10th Standards
Pupils explore the concept of trapezoids.  In this trapezoids instructional activity, students identify legs and bases of a trapezoid.  Pupils discuss the similarities and differences between isosceles trapezoids and right...
Lesson Plan
Curated OER

Hexagoning the Circle

For Teachers 6th - 9th
Students explore similarity to see that the area of a circle should be a constant times the square of its radius. Students create a hexagon. Students share their designs with the class.
Lesson Plan
Curated OER

Mirror Wells

For Teachers 8th - 12th
Students study mirror wells, which are similar to 3-D kalediscopes, but the end is cut off to enable you to look at patterns through them.
Lesson Plan
Curated OER

One-Difference Classification Train

For Teachers 2nd - 4th
Learners practice their classification skills through hands-on practice. Working in groups, students identify various ways in which similar items can be classified. Given a kit of similar items, learners classify objects in multiples...
Lesson Plan
Curated OER

Fences and Posts

For Teachers 5th
Fifth graders use Geoboards to demonstrate how shapes can be made by looping the rubber bands over the nails. They make a triangle on their Geoboards. At least one side of the triangle should be either horizontal or vertical. The picture...
Lesson Plan
Curated OER

ndirect Measurement Technique: Using Trigonometric Ratios

For Teachers 9th
Ninth graders find the height of an object that would be difficult or impossible to measure directly. They construct and use a Clinometer to measure the angle of elevation (or depression). Students create a sketch of the measurement...
Lesson Plan
Curated OER

Math: Tangents

For Teachers 9th - 10th
Students discover how to recognize tangents and how to use their properties. They investigate and use the properties of angles, arcs, chords, tangents, and secants. Students use two tangents and the properties of similar triangles to...
Lesson Plan
Curated OER

Measuring Angles

For Teachers 3rd
Third graders describe an amount of turn from a particular position to another using the 'circular' benchmarks of 0, ++, ++, ++, and full turn. Estimation language such as 'just about', 'between', 'not quite', 'just over', and similar...
Lesson Plan
Curated OER

Seeing Shapes

For Teachers K - 1st
Learners discover different geometric shapes such as triangle, square, rectangle, and octagon. Students incorporate the use of technology by taking pictures of shapes around their school using a digital camera.
Lesson Plan
Curated OER

Equality: Children's Rights

For Teachers Higher Ed
Students and parents participate in a variety of activities designed to help them explore the similarities and differences of people. They design and wear masks, sort attribute blocks, read stories, discuss the rights and...
Lesson Plan
Curated OER

Spider Webs

For Teachers K - 2nd
Students create spider webs. In this spider webs activity, students research various types of spider webs then write a report about  a spider of their choice.  Students also make their own web similar to an orb spider. 
Lesson Plan
Curated OER

Properties of Fractals

For Teachers 6th - 8th
Students build a working definition of a regular fractal, they measure the concepts of dimensions and scale, they explore the concept of a logarithm and they attempt to solve simple exponential equations for the exponent both by trial...
Printables
Virginia Department of Education

High School Mathematics Geometry Vocabulary Word Wall Cards

For Teachers 9th - 10th
Having a good working knowledge of math vocabulary is especially important for geometry learners. Here are 119 pages worth of wonderfully constructed definitions, constructions, formulas, properties, theorems, and postulates. This is a...

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