How do you build triangles?
http://illuminations.nctm.org/LessonDetail.aspx?ID=L234
A lesson plan for grades K–1 Mathematics
In this lesson, the second in a four-part unit from Illuminations titled “Triangles,” students investigate basic properties of triangles. They then investigate the relationships among basic geometric shapes and communicate their findings to their peers.
North Carolina Curriculum Alignment
Mathematics (2004)
Grade 1
- Goal 3: Geometry - The learner will identify, describe, draw, and build basic geometric figures.
- Objective 3.04: Solve problems involving spatial visualization.
Kindergarten
- Goal 3: Geometry - The learner will explore the concepts of geometry.
- Objective 3.01: Identify, build, draw, and name triangles, rectangles, and circles; identify, build, and name spheres and cubes.
- Objective 3.04: Complete simple spatial visualization tasks and puzzles.
