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THE most common impressions that student's express when learning physics are probably 'boring' and 'difficult'. Unsurprisingly these were also felt by student's in SMP I Kudus. These student's have relatively good achievement but when it comes to science, they seemed to be uninspired. They often seemed distracted, doing things not related to the subject, not paying attention and simply bored. The following is a BTL technique that was successful in boosting student's motivation, as tested by Abdul Rochim.
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Balloon Race
A force is any influence that causes a free body to undergo a change in direction, shape, speed, size, etc. Newton's laws of motion consist of: First law of inertia, Second law on the relationship between mass, force and acceleration, and the Third Law on the mutual forces of action and reaction. The application of these laws are apparent in our daily life.
ACTIVITY I
- Put a marker on a piece of paper. Pull the paper slowly and then stop. What happens?
- What happens if we pull the paper rapidly?
- Make an analysis.
ACTIVITY 2
Blow a balloon. What happens? Why? Describe the force at work.
- Using a rope and a straw, make a practical design so that the balloon move in a straight line.
- Now, we can have a balloon race!
- Do you think we can use balloons to move toy car's?
Work individually to make a report of this experiment on a piece of paper. Write down the 'objective', 'equipment
and materials', 'steps for each activity', 'data and analysis' and 'conclusion'.
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LESSON STEPS
Subject : Physics
Class/Semester : VIII/1
Theme : Newton's Law
Time : 2 x 40' (2 sessions)
Competency Standard : 5. To understand the role of force, energy and work, in our daily life.
Basic Competency : 5.1. Identifying types of force, additions of force and its influence on a free body
Equipment / Materials : Balloon, rope, straw, toy car's
Lesson Scenario
Description: (1) Cooperative learning;
(2) Problem solving; (3) Discussing high level questions; (4)
Students write work
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