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Congruent figures

This is a fun, hands-on activity to help students identify congruent figures.

Format: lesson plan (grade 3 Mathematics)

By Jennifer Robinson.

Winter congruent and symmetrical shapes

Students learn about congruency and symmetry. They complete a symmetrical tree that is complete with congruent ornaments.

Format: lesson plan (grade 3 Mathematics)

By Julie Little.

Noodles away

This lesson will assist students to see angle relationships and the relationship of parallel lines and transversals. This exercise is good for visual and tactile learners since it is of a concrete nature. Students of all academic levels can enjoy this.

Format: lesson plan (grade 5 Mathematics)

By Melda Bullock.

Proof puzzles

Students will work in small groups to put geometric proofs that have been cut apart in the correct order. They will organize statements with the correct reason. A recorder in the group will write the finished product for the group to turn in to the teacher.

Format: lesson plan (grade 9–12 Mathematics)

By ann mewborn.

Introduction to polar coordinates

The student will be introduced to the definition of polar coordinates, how to graph them, and how to compare them to rectangular coordinates.

Format: lesson plan (grade 9–12 Mathematics)

By vicky burlington.

To know them is to teach them

We must maintain high standards and expectations, incorporate students' experiences into the curriculum, and use culturally relevant materials.

By Barbara Rush.

Reflection designs

Students will be able to illustrate the geometric transformation of a reflection through creating their own unique designs.

Format: lesson plan (grade 4 Mathematics)

By Karen Boles.

Tangrams

While reading Grandfather Tang's Story by Ann Tompert, students will be using tangrams to create the animals that the fox fairies are turning themselves into in this story.

Format: lesson plan (grade 3 Mathematics)

By Dawn Coleman.

Culturally relevant teaching

Culturally relevant teaching is a term created by Gloria Ladson-Billings (1994) to describe "a pedagogy that empowers students intellectually, socially, emotionally, and politically by using cultural referents to impart knowledge, skills, and attitudes."

Format: article

By Heather Coffey.

Resources on the web

Finding Lines of Symmetry

Students identify and create lines of symmetry and congruent figures. (Learn more)

Format: lesson plan (grade 2 Visual Arts Education and Mathematics)

Provided by: National Council of Teachers of Mathematics

Discovering the area formula for circles

In this lesson, one of a multi-part unit from Illuminations, students use a circle that has been divided into congruent sectors to discover the area formula by using their knowledge of parallelograms. (Learn more)

Format: lesson plan (grade 6–7 Mathematics)

Provided by: National Council of Teachers of Mathematics

Figuring in football

Students examine the influences of pattern, symmetry, and design in the real-world, by looking at a football field. (Learn more)

Format: lesson plan (grade K–2 Mathematics)

Provided by: National Council of Teachers of Mathematics

Reflect on this

In this lesson, from Illuminations, students investigate reflections in a plane using mirrors (or other reflective materials) and a geometry utility. They apply their findings to examination of interior angles of regular polygons. (Learn more)

Format: lesson plan (grade 9–12 Mathematics)

Provided by: National Council of Teachers of Mathematics

Parts of a square

In this lesson, one of a multi-part unit from Illuminations, students investigate the ways shapes can be divided into equal pieces with one or two cuts. (Learn more)

Format: lesson plan (grade 3 Mathematics)

Provided by: National Council of Teachers of Mathematics

Fun with fractions: Looking back and moving forward

In this lesson, one of a multi-part unit from Illuminations, students use a fraction applet to construct various fractions when given the fraction in standard form. (Learn more)

Format: lesson plan (grade 3–5 Mathematics)

Provided by: National Council of Teachers of Mathematics

NonEuclid

Download a Java simulation to aid students learning of the basic concepts of hyperbolic geometry. Includes activities and discussions of definitions, proofs, x-y coordinate systems, and more. (Learn more)

Format: website/activity

Provided by: University of New Mexico