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

Circle.

Mouse and circle.

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.

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

The mouse game looking for the cheese.

Mouse, circle and the visualization of the mouse rotation on the circle.

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

Glue stick,mouse and circle.

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

A measuring tool for comparison of length

Triangles activity A,  Triangles activity B , Polygon activity A, Polygon activity A, Polygon activities B 1/2 ,  Polygon activities B 2/2 , Polygon activity C , A measuring tool for comparison of lengths , Quadrilaterals A , Quadrilaterals B: Square & Rectangle – same and different, Quadrilaterals C: Square & Rectangle Line of reflective symmetry 1/2, Line of reflective symmetry 2/2,  , Lines of symmetry in quadrilaterals, Translation of shapes

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.

Intuitive  identification  of right angles.

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.

Polygon activity 3 decomposition and composition 1/2

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.

      .Concepts of sides and vertices in polygon, Parallels side

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.

A rabbit finger puppet

Triangles activity A,  Triangles activity B , Polygon activity A, Polygon activity A, Polygon activities B 1/2 ,  Polygon activities B 2/2 , Polygon activity C , A measuring tool for comparison of lengths , Quadrilaterals A , Quadrilaterals B: Square & Rectangle – same and different, Line of reflective symmetry 1/2, Line of reflective symmetry 2/2, Quadrilaterals C: Square & Rectangle , Lines of symmetry in quadrilaterals, Translation of shapes

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.

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.

• The pupils will study diagonals of polygons.
• The pupils will study lines of reflective symmetry in quadrilaterals and polygons.

Puppy and child.

Pupils will recognize and investigate diagonals formed during the folding process. Pupils will discover which lines of reflective symmetry of a square are also diagonals. Several geometric terms will be revised as well as studying new concepts. There is a following up lesson 2/2 to conclude these concepts.י

Opposite vertices, different types of angles, polygons and quadrilaterals.

חקר תכונות המרובעים.

ללא דגם

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

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.

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

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

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

ציפור ארנבת

מירי גולן
© כל הזכויות שמורות למרכז הישראלי לאוריגאמי

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

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.

ישרים מקבילים, ישרים מאונכים, זוויות.

• 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.

Puppy and child.

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.

Adjacent and opposite vertices of a polygon.Lines of reflective symmetry.

• 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.

Puppy and child.

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.

Adjacent and opposite vertices of a polygon.Lines of reflective symmetry.