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Geometry 1 Constructive Triangles Lesson Plans Montessori Manual Unit 3

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Minkybubs Montessori
944 Followers
Grade Levels
1st - 4th, Homeschool
Standards
Formats Included
  • PDF
Pages
32 pages
$12.00
$12.00
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Minkybubs Montessori
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Description

Created by a Montessorian with many years of curriculum development experience! Save yourself LOADS of time and research. I have used these presentations with my own class.

The Constructive triangles are another of Montessori's well-known didactic materials to help children experience plane geometry. They are used:

  • To name the shapes constructed by the triangles.
  • To develop the logical mathematical mind.
  • To indirectly prepare for the concept of equivalence and the derivation of area.
  • To give the child practical experience in plane geometry.
  • To come to a point of consciousness that the triangles are called ‘constructive’ because they construct other rectilinear shapes.

This resource includes:

  • Constructive Triangle material analysis for each of the 6 sets
  • Presentations for each set
  • Detailed step-by-step presentation instructions
  • Dozens of step-by-step illustrations and photographs
  • With each presentation is given the purpose, direct aim(s), indirect aim(s), control of error, and points of consciousness

This bundle is useful for children from ages 4-9 years of age and up.

Use the Constructive Triangles after the Geometry Cabinet has been introduced and the child is familiar with the names of the shapes.

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Total Pages
32 pages
Answer Key
N/A
Teaching Duration
N/A
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Standards

to see state-specific standards (only available in the US).
Describe objects in the environment using names of shapes, and describe the relative positions of these objects using terms such as above, below, beside, in front of, behind, and next to.
Correctly name shapes regardless of their orientations or overall size.
Identify shapes as two-dimensional (lying in a plane, “flat”) or three-dimensional (“solid”).
Analyze and compare two- and three-dimensional shapes, in different sizes and orientations, using informal language to describe their similarities, differences, parts (e.g., number of sides and vertices/“corners”) and other attributes (e.g., having sides of equal length).
Compose simple shapes to form larger shapes. For example, “Can you join these two triangles with full sides touching to make a rectangle?”

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