"Classification of Triangles" (5 class)

LESSON: Demo lesson Classification of triangles (presentation by www.Prezi.com )			School: Murager, Kyzylorda
Date: 5 “a”			Teacher name:  Kydyrbayeva N.B
CLASS: 5			Number present:	absent:
Learning objectives(s) that this lesson is contributing to		To explain the triangle and to motivate SS To classify  the types of number To practice and recognize the academic words in three languages.
Lesson objectives		All learners will be able to:
		Recognize triangles Able to say the types of  numbers
		Most learners will be able to:
		Explain the types of  numbers
		Some learners will be able to:
		·         Classify the types of triangle and explain them
Previous learning		Angles
Plan
Planned timings	Planned activities (replace the notes below with your planned activities)				Resources
Beginning 3 minutes 5 minutes 10 minutes	Greeting Hello, children! I’m glad to see you! How are you? Now, I’ll divide you in to 2 groups, saying Red and Blue. In order to know the theme of the lesson you should answer for some questions, giving your correct answer you’ll build a figure, according to this figure you can guess the theme of the lesson.                                                           1.       What is point and line? 2.       What is plane and segments? 3.       What is endpoint and ray? 4.       What is midpoint, bisector of a segment? 5.         What is acute angle? 6.       What is right angle? 7.       What is obtuse angle? 8.       What is straight and complete angle? So, what is the theme of the lesson? Yes, Triangle. New theme: Do you understand these written words? (expected answer is “no” cause they don’t understand them) We’ll return to this chart at the end of the lesson. A triangle is a polygon with three sides. If we connect three noncollinear points in a plane we obtain a triangle.                                   angle                                                    side                                                                                  vertex (vertice)   Academic language in tree languages: Angle Бұрыш Угол Side Қабырға Сторона Vertex Шың (нүкте) Вершина Academic language in tree languages: Equilateral triangle тең қабырғалы үшбұрыш  равносторонний треугольник Isosceles triangle Теңбүйірлі үшбұрыш  равнобедренный треугольник Scalene triangle Әртүрлі бұрышты үшбұрыш  Косоугольный треугольник Right triangle тік бұрышты үшбұрыш  прямоугольный треугольник Acute triangle сүйір бұрышты үшбұрыш  остроугольный треугольник Obtuse triangle доғал бұрышты үшбұрыш тупоугольный треугольник Scalene Isosceles Equilateral Acute Right Obtuse Song: “Triangle Style”				https://www.youtube.com/watch?v=OwiNe_Vp9pM
5 minutes 5 minutes 5 minutes 7 minutes	Activity #1: Say them in tree languages Activity #2: The triangle ABC,        A=54◦,       B=80◦, then find the angle C? It is the triangle   ABC         B A              C      the angle B is 65 degrees, Find the angle C? It is Isosceles triangle ABC, the angle A =65 degrees. Find other angles. It is Right Isosceles triangle, Find angles.               Activity#3: Now, I say the types of triangle and you should shape that figure: 1.       Acute 2.       Isosceles 3.       Equilateral 4.       Scalene 5.       Right 6.       Obtuse 7.       Scalene and acute 8.       Obtuse and Isosceles Activity #4: Game!!! www.getkahoot.com   for a teacher, www.kahoot.it for pupils all pupils have to have tablets or phone and internet access 1.       The triangle that has 3 equal sides that are the same length. a.       Equilateral b.       Isosceles c.       Scalene 2.       The triangle that has at least 2 sides that are the same length. a.       Equilateral b.       Isosceles c.       Scalene 3.       This triangle has all 3 angles that are acute angle. a.       Acute b.       Right c.       Obtuse 4.       The triangle ABC, <B =90º, <A=58, Find <C=? a.       30 b.       35 c.       32 5.                               What kind of triangle is shown? a.       Obtuse scalene b.       Acute isosceles c.       Right isosceles 6.       Which classification of triangle can’t be possible: a.       Obtuse scalene b.       Obtuse Equilateral c.       Obtuse Isosceles 7.       All angles less than 90º a.       Acute b.       Right c.       Obtuse 8.       The triangle which has an angle more than 90 º a.       Acute b.       Right c.       Obtuse 9.       The triangle has an angle  90º a.       Acute b.       Right c.       Obtuse 10.                             What triangle is it? a.       Isosceles& acute b.       Equilateral& acute c.       Isosceles& obtuse Activity#5  Do you remember these figures? (The words will be written on the other side, pupils don’t see them, and they should name the type of triangle and turn it.)
End 5mins	-          How do you feel now? -          Are you OK ? -          Write on your apples if the lesson was clear and interesting or vice versa. -          Now, Boys and Girls come up to the apple tree once more and stick your apples. -          Evaluating -          Give the home  task H/t: Shape the types of triangle and do the tasks ( a sheet of paper is given)