Lesson Plan
Texas Instruments

Investigating Segments in a Quadrilateral

For Teachers 9th - 12th Standards
Investigate the properties of the shape formed by connecting the midpoints of adjacent sides of a quadrilateral. In this properties of the shape formed by connecting the midpoints of adjacent sides of a quadrilateral lesson, students use...
Lesson Plan
Curated OER

Exploring the Circumcenter of a Triangle

For Teachers 9th - 12th Standards
Students construct the circumcenter of a triangle. In this constructing the circumcenter of a triangle lesson, students construct a triangle using Cabri Jr. Students draw perpendicular bisectors of the sides of the triangle. Students...
Lesson Plan
Curated OER

Symmetry of the Southwest

For Teachers 4th
Fourth graders examine mirror symmetry. For this symmetry lesson, 4th graders discover that symmetry is not always vertical or horizontal. Students cut and fold shapes along lines of symmetry.
Lesson Plan
Curated OER

Geo Jammin' - Day 3, Lesson 11: Poly Doodles All Day

For Teachers 3rd - 6th
Students explore geometric vocabulary through creation of shapes on a geoboard. They present design attributes, transfer of design, and color-coding components mix to create a fun and exciting lesson that stretches student thinking.
Lesson Plan
Curated OER

Tiling the Plane

For Teachers 5th
Fifth graders use pattern blocks and triagular grid paper to reivew shape names, be introduced to the concept of a tiling of the plane, and determine which pattern blocks tile the plane. They are asked if they comprehend what a...
Lesson Plan
Curated OER

Drawing Lines of Symmetry

For Teachers 3rd
Third graders explore the concept of symmetry using geometric shapes, capital letters and various other shapes. They fold shapes to show symmetry, draw lines of symmetry and create symmetrical designs.
Lesson Plan
Curated OER

Animal Tracks

For Teachers 4th - 5th
Young scholars are introduced to the topic of area. In groups, they share various techniques to help them identify different shapes and work together to calculate the area. They use this same knowledge to determine the area of animal...
Lesson Plan
Curated OER

The Trappings of Trapezoids

For Teachers 8th - 10th
Students define trapezoids and their shapes. In this geometry lesson, students calculate the area of a trapezoid and a parallelogram. They use Cabri software to make investigations.
Lesson Plan
Curated OER

Area and Perimeter Relationships

For Teachers 6th
Sixth graders explore the relationship between area and perimeter. After discovering the definition of perimeter, 6th graders work together to create designs for a flower bed. They observe that the perimeter remains constant even...
Lesson Plan
Curated OER

Inscribed Quadrilaterals and Parallelograms

For Teachers 9th - 10th Standards
Students differentiate between inscribed quadrilaterals and parallelograms. In this geometry lesson, students identify the shaped of the polygons when it is inscribed inside of a circle. They calculate the missing angles of the inscribed...
Lesson Plan
Curated OER

Spatial Relations - Week 9

For Teachers 10th - 12th
In this spatial relations worksheet, students identify the number of triangles in a given figure, identify the number of cubes that a plane intersects, and determine the number of line segments in a given cube. This three-page worksheet...
Lesson Plan
Curated OER

Mother Nature Pattern Maker

For Teachers K - 2nd
Students in a teacher education program enhance their awareness of patterns. They discover how to support their students in developing this skill in mathematical terms. They role play the role of a K-2 student and collect images from...
Lesson Plan
Curated OER

Dancing Pumpkin Man

For Teachers K
Students listen carefully and put pieces together following the teacher's instructions. They point to the different shapes and sizes as they are being called out and count the number of items they have in front of them. They decorate...
Lesson Plan
Curated OER

Geo Jammin' - Day 4, Lesson 13: Where, Oh Where, Can the Geo Be?

For Teachers 2nd - 4th
Students listen to a story "My Crazy Dream" with an intent to identify shapes in ordinary objects. They raise their hands when they've heard an object whose shape they can identify. They discuss their findings.
Lesson Plan
Curated OER

Area graphics for 7th graders

For Teachers 6th - 7th
Students randomly select dimensions for three geometric shapes (square, right triangle and circle). From the graphs they compare and contrast the graphical results of each shape.
Worksheet
Curated OER

Volumes in 3-D

For Students 11th
In this geometry worksheet, 11th graders calculate the volume of there dimensional shapes using the formula for cylinders. They are given the height and the base and asked to calculate the volume. There are 4 problems.
Lesson Plan
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Illustrative Mathematics

The Geometry of Letters

For Teachers 3rd - 5th Standards
Use the alphabet as a tool for teaching your class about geometric figures. Break apart capital letters into line segments and arcs. Classify angles as right, acute, or obtuse. Identify parallel and perpendicular lines. An excellent...
Lesson Plan
Curated OER

Patterns Here, There, and Everywhere!

For Teachers 4th - 6th
Upper graders access the Microsoft Word program and create patterns by utilizing certain keys on the keyboard. They create picket fences, smiley faces, and hearts. It seems that this lesson has as much to do with keyboarding skills as it...
Lesson Plan
Curated OER

Comparing Measurements

For Teachers 3rd - 5th
Young scholars explore measurements by completing worksheets in class. In this geometry lesson, students identify the basic measurement units in both the English and metric systems. Young scholars analyze 2 and 3 dimensional objects and...
Worksheet
Curated OER

Circles, Cylinders, Cones and Spheres

For Students 4th - 5th
In this comparing geometric figures learning exercise, students continue patterns and observe circles. In this problem solving learning exercise, students answer seven questions.
Lesson Plan
Curated OER

Marshmellow Geometry

For Teachers 5th - 10th
Students explore a variety of geometric shapes, name them, and list their characteristics. The shapes are transposed into structures and checked for accuracy.
Lesson Plan
Curated OER

Dynamic Collages and Assemblages

For Teachers K - 5th
Students create a two, three, or four-dimensional collage or assemblage. They use shapes, colors, images, objects, and textures to create their collage.
Lesson Plan
Curated OER

Angles Lesson Plan

For Teachers 9th - 10th
Students explore the relationship of angles as it relates to 2 and 3-D shapes. In this geometry lesson, students differentiate between acute, obtuse, right, alternate interior, exterior and adjacent angles. They manipulate a math...
Lesson Plan
Curated OER

Plane and Solid Figures

For Teachers 9th - 11th
Young scholars define a plane and a solid shape. In this geometry lesson, students compare and contrast different geometric shapes as they relate to solids. They name the geometric solids based on their sides and edges.