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Three sides

This lesson, one of a five-part unit from Illuminations titled “Investigating Shapes: Recognizing, Constructing, and Identifying Triangles,” students identify and recognize triangles using multiple representations. Students use attribute-blocks... (Learn more)

Format: lesson plan (grade K–1 Mathematics)

Provided by: Illuminations

Tracing and drawing

Students will continue to discuss attributes of triangles. They will trace and draw triangles individually, recognize objects in their environment that are shaped like triangles, and explain to the class how they recognized the shape. Students will:... (Learn more)

Format: lesson plan (grade K Mathematics)

Provided by: Illuminations

Two runners

In this lesson, one of a two-part unit from Illuminations titled “Understanding Distance, Speed, and Time Relationships Using Simulation Software,” students physically demonstrate two scenarios involving rate of change, and then use software... (Learn more)

Format: lesson plan (grade 3–5 Mathematics)

Provided by: Illuminations

Virtual pattern blocks

Students use virtual pattern blocks to problem solve and reason with fractions. They investigate relationships between parts and wholes using another representation of a region model, virtual fractions. Illuminations provides the activity sheet and links... (Learn more)

Format: lesson plan (grade 3–4 Mathematics)

Provided by: Illuminations

What can you build with triangles?

Students explore ways of building different basic shapes from triangles and investigate three dimensional shapes constructed from triangles. Illuminations provides an activity sheet and instructions for completing the lesson. Students use cut outs of two... (Learn more)

Format: lesson plan (grade 2 Mathematics)

Provided by: Illuminations

What's important about triangles?

Students explore the importance of the side lengths of a triangle and when triangles can or cannot be constructed on the basis of these lengths. Illuminations provides an activity sheet and detailed instructions for completing the lesson. Students... (Learn more)

Format: lesson plan (grade 4–5 Mathematics)

Provided by: Illuminations

What's in a shape?

The purpose of this lesson is to explore characteristics of shapes by making and using tangram sets; to discover how the tangram pieces are related to one another; and to determine how many different combinations of the triangles, squares, and parallelograms... (Learn more)

Format: lesson plan (grade 4–5 Mathematics)

Provided by: Science Netlinks

Who was Wassily Kandinsky?

This lesson provides students with an exploration of the geometric figures Wassily Kandinsky used in his art. Students participate in a scavenger hunt to become familiar with Kandinsky’s works and the geometric figures used in his paintings. Illuminations... (Learn more)

Format: lesson plan (grade 3–5 Visual Arts Education and Mathematics)

Provided by: Illuminations

Working with shapes

Students review basic geometric terms related to triangles. They explore these terms and other geometric concepts by modeling them on the geoboard. Illuminations provides a link to the virtual geoboard, graphic organizers, and detailed instructions for... (Learn more)

Format: lesson plan (grade 3 and 5 Mathematics)

Provided by: Illuminations