#### DIAGONALS AND LINES OF SYMMETRY IN POLYGONS 2/2 Copy

• Lesson Aims
• Pupils will study the concept of diagonal and  draw diagonals in various polygons.
• Pupils will learn that diagonals are not only vertical or horizontal and that a diagonal can be drawn outside the polygon.
• Name of Model
• Puppy and child.

• Lesson Content
• Pupils will recognize and investigate diagonalsduring the folding process. Pupils will discover which lines of reflective symmetry are also diagonals of a polygon. Thsi lesson reviews the concepts of diagonals of a polygon and lines of reflective symmetry.

• Previous knowledge
• Adjacent and opposite vertices of a polygon.Lines of reflective symmetry.

To enter the rate you need to purchase the appropriate lessons package

#### DIAGONALS AND LINES OF SYMMETRY IN POLYGONS 2/2 Copy

• Lesson Aims
• Pupils will study the concept of diagonal and  draw diagonals in various polygons.
• Pupils will learn that diagonals are not only vertical or horizontal and that a diagonal can be drawn outside the polygon.
• Name of Model
• Puppy and child.

• Lesson Content
• Pupils will recognize and investigate diagonalsduring the folding process. Pupils will discover which lines of reflective symmetry are also diagonals of a polygon. Thsi lesson reviews the concepts of diagonals of a polygon and lines of reflective symmetry.

• Previous knowledge
• Adjacent and opposite vertices of a polygon.Lines of reflective symmetry.

To enter the rate you need to purchase the appropriate lessons package

#### Rotational symmetry 2/2

• Lesson aims
•

• The pupils will identify the properties of reflective and rotational shapes of various quadrilaterals.
• The pupils will discover the order of symmetry of various quadrilaterals.
• The pupils will identify the quadrilaterals having reflective or rotational symmetry  or both symmetries.
• The activities will aid the pupil in understanding the concept of rotational symmetry.
• Name of Model
• A puppy similar to the model of lesson 1/2 on rotational symmetry.

• Lesson Structure
• According to the curriculum.

• Lesson Content
• The folding process at different stages enables the pupil to learn about the concept of rotational symmetry in additional quadrilaterals.

To enter the rate you need to purchase the appropriate lessons package

#### Didactic -Perpendicular line and perpendicular side of polygon

• Lesson Aims
• The study of Perpendicular Lines and Perpendicular Sides of Polygons.
• Comparison of angle sizes.
• Investigation of angles and  Perpendicular Lines and Perpendicular Sides of Polygons.

• Name of Model
• A sweet box.

• The Lesson Structure
• The measuring tool,Composition and Decomposition,Polygons 3,Perpendicular Lines and Perpendicular Sides of Polygons.

• Lesson Content
• In this lesson the pupils will investigate intersection of straight lines,perpendicular lines and perpendiculars sides of Polygons. The model comes as surprise while learning new concepts and revising previously learnt concept.

• Prior knowledge
• .The concepts of Angle, Right Angle,Square and Pentagon

• Materials
• Measuring Tool, origami sheets 15×15 cm.

To enter the rate you need to purchase the appropriate lessons package

#### Perpendicular line and perpendicular side of polygon

• Lesson Aims
• The study of Perpendicular Lines and Perpendicular Sides of Polygons.
• Comparison of angle sizes.
• Investigation of angles and  Perpendicular Lines and Perpendicular Sides of Polygons.

• Name of Model
• A sweet box.

• The Lesson Structure
• The measuring tool,Composition and Decomposition,Polygons 3,Perpendicular Lines and Perpendicular Sides of Polygons.

• Lesson Content
• In this lesson the pupils will investigate intersection of straight lines,perpendicular lines and perpendiculars sides of Polygons. The model comes as surprise while learning new concepts and revising previously learnt concept.

• Prior knowledge
• .The concepts of Angle, Right Angle,Square and Pentagon

• Materials
• Measuring Tool, origami sheets 15×15 cm.

To enter the rate you need to purchase the appropriate lessons package

#### TRIANGLES AND SYMMETRY

• Lesson Aims
• Pupils will investigate the lines of reflective symmetry in an equilateral triangle.
• Pupils will investigate the lines of rotational symmetry in an equilateral triangle.
• Name of Model
• A flapping bird.

• The Lesson Structure
• According to syllabus.

• Lesson Content
• Investigation of reflective and rotational symmetry in an equilateral triangle. This model demands experience in folding.

• Prior Knowledge
• Concepts of symmetry and properties of an equilateral triangle.

To enter the rate you need to purchase the appropriate lessons package

#### Perpendicular and parallel straight lines 1 1/2

• Lesson Aims
• During the folding processes the pupil will relate to perpendicular and parallel lines and segments.

• Name of Model
• There is no model in this lesson.

• The Lesson Structure
• According to planned curriculum.

• Lesson content
• This is a prepatory lesson to the next lesson about parallel and perpendicular lines and segments with the model of a dress. In the lesson the pupils investigate the properties of parallel and perfpendicular lines using  their measuring tool.

• Prior Knowledge
• The concepts of angle,a right angle and a square.

To enter the rate you need to purchase the appropriate lessons package

#### Perpendicular and parallel straight lines 2 2/2

• Lesson Aims
• During the folding process the pupils will identify parallel and perpendicular lines.

• Name of Model
• A dress.

• The Lesson Structure
• According to the curriculum.

• Lesson content
• This is the second lesson on parallel and perpendicular lines following the prepatory lesson on parallel and perpendicular lines-1 1/2. In this lesson will identify aparallel and perpendicular lines in other situations. The final model will be  a surprise for the pupils and at the same time learning new concepts and revising previously learnt concepts.

• Prior Knowledge
• The concepts of angle,straight angle and square.

To enter the rate you need to purchase the appropriate lessons package

#### השוואת שטחים במצולעים Copy

• מטרת הפעילות
• הכנת התלמידים לקראת נושא המדידות.
• השוואת שטחים על ידי כיסוי ופירוק.
• השוואת שטחים של צורות מורכבות על ידי חלוקתם.
• שם הדגם
• סימניה לספר

• שם היוצר/ת
• מירי גולן

© כל הזכויות שמורות למרכז הישראלי לאוריגאמי

• רצף מומלץ
• מומלץ ללמד לפי הרצף המופיע באתר (בהתאם לתכנית הלימודים). ​

• על השיעור
• פעילות בהרצה

התלמידים ילמדו שצורות שוות שטח אינן בהכרח שוות היקף.

במהלך השיעור התלמידים יקפלו את הנייר לצורות שונות ויבחנו את המידות והצורות השונות. בסוף השיעור הילדים יגיעו למסקנה שמידת השטחים אינה תלויה בצורתה. התלמידים יעבדו בזוגות וגם בקבוצות. ובסוף הפעילות תתקבלנה סימניות לספר.

משך זמן פעילות מומלץ: 45 דקות

* משך זמן הפעילות נתון לשיקול המורה, ויכול להשתנות בהתאם לגודל ואופי הכיתה.

To enter the rate you need to purchase the appropriate lessons package

#### Perpendicular Line

• Lesson Aims
• Pupils will recognise perpendicular lines and draw perpendicular lines.

• Name of Model
• The swimming fish.

• The Lesson Structure
• The measuring tool,Composition and Decomposition of Shapes, Polygons 3,Perpendicular  lines and sides of polygons.

• Lesson Content
• In this lesson the pupils will investigate perpendicular and intersecting lines. At the conclusion of this lesson the final model will be a surprise while learning new concepts and revising previously learnt geometrical concepts.

• Prior knowledge
• Angles,right angle,sides of a polygon.