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Constructive Triangles

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  1. Box One - Rectangle Box - Contents
  2. Box One - Rectangle Box - First Presentation
  3. Box One - Rectangle Box - Second Presentation
  4. Box One - Rectangle Box - Third Presentation
  5. Box 2 - Triangle Box - Materials
  6. Box 2 - First Presentation
  7. Box 2 - Second Presentation
  8. Box 2 - Third Presentation
  9. Box 2 - Fourth Presentation
  10. Box Three - Large Hexagonal Box Materials
  11. Box Three - First Presentation
  12. Box Three - Second Presentation
  13. Box Three - Third Presentation
  14. Box Four - Small Hexagonal Box - Materials
  15. Box Four - First Presentation
  16. Box Four - Second Presentation
  17. Box Five - Blue Triangle Box - Contents
  18. Box Five - First Presentation
  19. Box Five - Second Presentation

Participants 38

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Constructive Triangles Box Five – Second Presentation
Lesson 19 of 19
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Box Five – Second Presentation

Collin January 14, 2022
  1. Mix the blue pieces on the rug.
  2. Ask the child to please make a square.
  3. Ask the child if she can make a parallelogram with those two pieces.
  4. Ask the child to make another parallelogram with those two pieces.
  5. Say: “Can you make any other shape with these two pieces?”
  6. “With two right angled Isosceles Triangles, we can make a square, two parallelograms, and a triangle, if we turn one triangle upside-down.”
  7. Mix the isosceles triangles with the others and choose the two right angled scalene triangles.
  8. Ask the child to make a parallelogram.
  9. “Can you make another parallelogram with these two pieces?”
  10. Next, ask the child to make a rectangle.
  11. Show the child how to make it by turning one of the triangles upside-down.
  12. Say: “We can make two parallelograms, a rectangle, and a triangle with two right angled scalene triangles.”
  13. Ask the child what she can make with two equilateral triangles.
  14. “When we build with two equilateral triangles, we always get the same shape, a rhombus.”
  15. Ask the child to build with one scalene triangle, and one isosceles triangle.
  16. The child can build a trapezoid and a triangle.
  17. Return the material to the box, the box to the shelf.

POINT OF INTEREST

  • Making the shapes with the blue triangles, without any guidelines.
  • Superimposing shapes.

CONTROL OF ERROR

  • The triangles from Box One.
  • Teacher or another child.

LANGUAGE

  • The names of all the shapes, total and individual.

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