72
Plan
27
Topic: Normal force
Aim(s): to get knowledge of the normal force in English language, give
examples,
solve problems
(A)
Communication
Communication
Language of Learning (Topic specific
Vocabulary& Grammar)
Language for learning (New=language
needed to operate in the learning
environment or in a particular lesson-
discuss, justify, explain, etc)
Language through learning(Structures)
normal Force
opposite direction
angle
weight
object
acceleration
degree
Teaching Plan (Procedure, timing, type, sequence of activities)
I. Activity “True or False”
1) Support force exerted upon an object that is in contact with another stable
object → Normal Force
True
False
2) It acts perpendicular to the surface and is a pushing force that pushes
outward. It can change its
magnitude → Where does the normal force act?
True
False
3) Two surfaces rubbing over each other, it acts parallel to the surfaces and in
the opposite direction to
the motion (produces thermal energy). → What does tension do?
True
False
II. New material
73
(showing
presentation)
III. Solve the problem
Example 1:
Three forces act on a box
on an inclined plane as shown in the
diagram below. [Vectors are not drown
to scale.] If the box is at rest, the net
force acting on it is equal to
1.the weight
2.the normal force
3.friction
4.zero