NLC MATERIALS SCIENCE 8

1. BALANCED and
UNBALANCED
Forces
Short Lesson
Purpose
Review
Language
Practice
Lesson
Activity
Lesson
Conclusion
Grade 8 Science
Lesson 3:
Teacher- I

2. 1. I will give you 4 questions.
2. You have 30 seconds to answer each question.
3.After the given time, you will be given the chance to
share your answer in the class randomly.
4. You will earn 2 points for every correct answer.
Short Overview
06
7 240

3. 067 068
1. What does the
word balance
mean in everyday
terms?

4. When something
is stable.
Equal
Not falling over

5. 067 068
2. What does the
word force mean
in everyday
terms?

6. To break something open-like
to force a door open;
A push or a pull;
Something that makes things
move (accelarate)

7. 067 068
3. What does balance
mean in scientific terms
when we are referring
to forces?

8. The forces are the same.
The forces are cancelling each
other;
One force counteracts the
other

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4. How could you
illustrate or represent
balanced forces?

11. Lesson Purpose and
Intention
 Explain balanced and unbalanced
forces;
 Explain how forces can affect the
way an object moves; and
 Help students to be better at
using symbols to communicate
information in science.

12. Lesson
Language

13. Same directions
Opposite direction
Force

14. Representations
Situations
Cancel

15. Lesson
Activity

16. 1. Equal forces acting in opposite
the same line cancel each other
and are described as being
“balance”.
Balanced Forces

17. 2. The movement of the
objects is changed if
the forces acting on
them are not “in
balance”

18. Situation 1
Situation 3
Situation 2
Situation 4

19. SCIENCE 8 Edition
1.You will be given 3 questions.
2. You have 30 seconds to answer each question.
3.After the given time, you will be given the chance to
share your answer in the class randomly.
4. For every correct answer, there will be a corresponding
POINTS.

20. Q1:
What does equal
forces mean?

21. The same sized
forces – two or more

22. Ᵽ1,000
Available balance:
P 1,000

23. Q2: What are
some ways that
the motion of
objects might be
changed?

24. They could start moving from
being still
They could speed up
They could slow down
They could change direction
They could stop moving

25. Ᵽ3,000
Available balance:
P 4,000

26. Q3: What needs
to happen for a
force to change
an object’s
motion?

27. If an object is still, you would need to
apply a force to it to make it move
(like push it or pull it)
If the object is moving, you could
apply a force to it to make it slow
down, to make it change direction

28. Ᵽ5,000
Available balance:
P 9,000

29. Situation 1
Situation 3
Situation 2
Situation 4

31. Situation 1 & 4

32. Ᵽ5,000
Available balance:
P 14,000

34. The object in situation 1
will not move

35. Ᵽ5,000
Available balance:
P 19,000

37. The object in situation 2
will move to the right

38. Ᵽ5,000
Available balance:
P 24,000

40. The object in situation 3
will move to the left

41. Ᵽ5,000
Available balance:
P 29,000

43. The object in situation 4
will not move

44. Ᵽ5,000
Available balance:
P 34,000

46. If the forces acting on an object are
balanced, the object will not move., or
If the forces acting on an object are
balanced, the object will move.
If there is not net force, the object will not
move.,
If there is a net force, the object will move

47. Ᵽ6,000
Available balance:
P 40,000

48. Lesson
Conclusion