#### Angles-2/3

• Lesson Aims
• The pupils will construct a circle using the measuring tool  and marking dots at equal distances.

• Name of Model
• Circle.

• Lesson Structure
• Mouse and circle.

• Lesson Content
• This is the second lesson in learning the concept of angle as a measure of a rotation. The following lesson will make use of the mouse and circle of the the two previous lessons to fully understand the dynamic approach of folding in order to see the formation of an angle as a process of rotation. It is suggested that the pupils make several circles.

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#### Angles-3/3

• Lesson Aims
• Pupils will recognize that the size of an angle is determined by the measure of rotation in relation to a given segment line.

• Name of Model
• The mouse game looking for the cheese.

• Lesson Structure
• Mouse, circle and the visualization of the mouse rotation on the circle.

• Lesson Content
• This lesson is the 3rd activity  demonstrating the concept of angle as measure of rotation.

• Materials
• Glue stick,mouse and circle.

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

#### A measuring tool for comparison of lengths

• Lesson Aims
• The pupils  will use the measuring tool for comparison of lengths and identification of right angles.

• Name of Model
• A measuring tool for comparison of length

• The lesson structure
• Lesson content
• Pupils will identify right angles intuitively using the measuring tool.

Pupils will identify right angles in various orientations.

The measuring tool should be folded  and kept in the pupils workbook at the conclusion of each lesson.

• Prior Knowledge
• Intuitive  identification  of right angles.

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

#### Polygon activity 3 decomposition and composition 1/2

• Lesson Aims
• The pupils during the folding process will identify polygons according to stated properties. The pupils will learn how to form different polygons with their sheets and investigate the various properties of the folded shapes.

• Model Name
• Polygon activity 3 decomposition and composition 1/2

• Lesson structure
• Lesson content
• The decomposing and composing activities allow the children to create various polygons during the folding process and with the combination of several triangular folded shapes. With a series of questions and answers during the folding process the pupils are able to deepen their geometric reasoning in a dynamic environment.

• Prior knowledge
•       .Concepts of sides and vertices in polygon, Parallels side

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#### Polygon activity 3 decomposition and composition 2/2

• Lesson Aims
• The pupils will fold and identify shapes according to their properties.

The pupils will use paper folding in order to make geometric shapes and investigate their properties.

• Name of Model
• A rabbit finger puppet

• Lesson content
• In this lesson the pupils investigate polygons that are formed during the folding process. There is a surprise at the end of the lesson.  The pupils learn new concepts and refresh their previous learning.

• Prior knowledge
• If during the folding process there are cases of inexact folding by some of the pupils, then these cases will be used to identify differences between the polygons and their properties. The pupils will also learn the concept of polygon sides and vertices.

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#### פירוק והרכבה – חקר מרובעים (ריבוע, דלתון, מעוין, ומקבילית) Copy

• מטרות הפעילות
• חקר תכונות המרובעים.

• שם הדגם
• ללא דגם

• רצף מומלץ
• מומלץ ללמד לפי הרצף המופיע באתר ( המותאם לפי תכנית הלימודים).

• על השיעור
• התלמידים יתנסו בפירוק והרכבה ובבחינת תכונות ההכלה של המרובעים.

משך זמן פעילות מומלץ: 45 דקות

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

• ידע נדרש
• מומלץ ללמד לאחר מרובעים ניתוח תכונות, מיון מרובעים, קביעת קשרי הכלה.

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#### 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.

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

#### חקר המרובעים (ריבוע, דלתון, מעוין ומקבילית) Copy

• מטרות השיעור
• התלמידים יחקרו את התכונות של הריבוע, המלבן, הדלתון, המעוין והטרפז.

התלמידים יחקרו את המרובעים: ניתוח תכונות, מיון מרובעים, קביעת קשרי הכלה.

• שם הדגם
• ציפור ארנבת

• יוצר/ת הדגם
• מירי גולן
© כל הזכויות שמורות למרכז הישראלי לאוריגאמי

• רצף מומלץ
• מומלץ ללמד לפי הרצף המופיע באתר (הרצף על פי תכנית הלימודים). ​

• על השיעור
• פעילות בהרצה

בפעילות זו התלמידים יחקרו את המרובעים שלהם שתי זוגות של צלעות מקבילות. ריבוע, מעוין ודלתון. ומרובע שלו זוג אחד של צלעות מקבילות, הטרפז. ויבחנו את האלכסונים והישרים המאונכים במרובעים. ובסוף הפעילויות יצרו ציפור שהיא גם ארנבת.

משך זמן פעילות מומלץ: 45 דקות

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

• ידע נדרש
• ישרים מקבילים, ישרים מאונכים, זוויות.

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#### 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 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.