TEACHER GUIDE AND MATEMATICH

TEACHER GUIDE
Introduction	(10 minutes)
Teacher checks attendance of students. a)    Apperception :   (5 minutes) Ask students to think what kind of situation that we need to use the negative numbers. Gives some questions in order to explore student knowledge about integers. Therefore, teacher can check prerequisite skill about integers  that students already had.
b)   Motivation :        (3 minutes) Gives motivation about the importance of integers in daily life. Show the pictures of thermometer. Ask student to share idea about that.
c)    Goal :                    (2 minutes) Informing students about the learning objectives, that students are able to:      Apply the properties of mathematical operation of integers in problem solving.
Main Activity	(60 minutes)
a)    Exploration :      (35 minutes) 1.          Shows thermometer pictures . (situational) 2.          Ask student what kinds of numbers in thermometers 3.          Make sure that student should be interactive with the picture 4.          Asking the meaning of the negative/positive  number (above/below sea level) in Everest pictures. 5.          Give students contextual problem in worksheet 1 which is do individually 6.          Guide students who have difficulties with problems 7.          Guide student to discuss and share their idea 8.          Dividing students into some groups. 9.          Giving student a worksheet 2 and Plano paper 10.     Guiding the group which is still does not understand with the problem in the worksheet. 11.     Choose a group to present their work in front of class then solve the problem on the worksheet by their own way. 12.     Giving chance for another group to ask about the problem in the worksheet to group that presenting in front of class. 13.     If the group cannot solve the problem, giving back the question to another group until it can be solved.
b)   Elaboration :      (15 minutes) 1.     Break all groups into normal class. 2.     Guides students with the question: Can you mention what types of situation  that you use a negative number to describe an event?
c)    Confirmation :   (10 minutes) 1.     Ask the students to find out what they do not understand. 2.     Do dialogue to make clear students’ understanding and give feed-back.
Closing	(10 minutes)
1.     Guides students to make reflection what they have studied today. 2.     Giving individual test.