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Differentiating the environment. Learning intention: Today we will be learning about the parts of a circle. We will discover circles outside the classroom.

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Presentation on theme: "Differentiating the environment. Learning intention: Today we will be learning about the parts of a circle. We will discover circles outside the classroom."— Presentation transcript:

1 Differentiating the environment

2 Learning intention: Today we will be learning about the parts of a circle. We will discover circles outside the classroom. We will paly a game with the dartboard. Success criteria: I will be successful if I could label the parts of a circle correctly and if I could identify each part and its definition.

3 Circles have no beginning or end. They represent the eternal whole and in every culture they are very important representing the sun, the earth, the moon, the universe, and other celestial objects. Circles are used to suggest familiar objects such as wheels, balls and many kinds of fruit. They have free movement and can roll. Their movement suggests energy and power. Their completeness suggests the infinite, unity, and harmony. Circles protect, they endure, they restrict. They offer safety and connection. Circles suggest community, integrity, and perfection.Circles are used to suggest familiar objects

4 A tangent is a line that touches the circle at only one point. The diameter is a chord that passes through the centre of a circlechord A chord of a Circle is a line drawn between two points on a circle.Circle The circumference of a circle is the perimeter of the circle. The radius is the distance from the centre of the circle to any point on its perimeter. An arc is a part of the circumference.circumference A segment is the part of a circle that is between a chord and the circumference. chord circumference A sector is the part of a circle between two radii. radii A semicircle is a half of a circle.

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6 Find the perimeter (circumference) The circumference is the perimeter of the circle. It means the distance around the outside. Pi is pronounced the same as the PIE you eat. The symbol used to represent Pi is .  = 3.14 Circumference =  x diameter C =  D Or C = 2   D

7 Brian Gamlin, a British carpenter, devised the current arrangement of numbers on dartboard back in The numbers are in the following order, going clockwise, starting at the top: 20, 1, 18, 4, 13, 6, 10, 15, 2, 17, 3, 19, 7, 16, 8, 11, 14, 9, 12, 1nd 5. Why this particular order? Brian Gamlin, a British carpenter, devised the current arrangement of numbers on dartboard back in The numbers are in the following order, going clockwise, starting at the top: 20, 1, 18, 4, 13, 6, 10, 15, 2, 17, 3, 19, 7, 16, 8, 11, 14, 9, 12, 1nd 5. Why this particular order? Activity 1 We are going outside to play with the dartboard

8 20, 1, 18, 4, 13, 6, 10, 15, 2, 17, 3, 19, 7, 16, 8, 11, 14, 9, 12, 1 and 5.


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