Download SESSION 3 AND 4: TWO-DIMENSIONAL SHAPES GENERAL

SESSION 3 AND 4: TWO-DIMENSIONAL SHAPES
GENERAL OBJECTIVES:
At the end of this unit students will be able to:
1.
2.
3.
4.
5.
6.
7.
Know the different types of triangles and their properties.
Recognize that the longest side of the triangle are opposite to the largest angle of the triangle.
Apply the interior angle properties of the different triangles to work questions involving geometric problems.
Know what is a quadrilateral.
Know what are the different types of quadrilaterals.
Understand the properties of quadrilaterals.
Apply the properties of quadrilaterals to do geometric problems.
SESSION 3
TOPIC – TRIANGLES
SPECIFIC OBJECTIVES
VOCABULARY
At the end of this unit
Scalene triangle: No two
students should be able to: sides and two angles are
Identify individually the
equal.
different types of triangles
Isosceles triangle: Two sides
with 95% accuracy.
and two angles are equal
(Cognitive/ knowledge)
Equilateral triangle: All
three sides and three angles
are equal. Hence each angle
is equal to 60°
Acute- angle triangle: Each
angle is an acute angle.
Obtuse- angle triangle: One
angle is an obtuse angle.
Right-angle triangle: One
angle is a right angle
Congruent triangle: Triangles
that are identical, equal in
area and if it is placed on a
triangle of the same it would
List the properties of the
different types of triangles fix exactly once the
corresponding elements are
individually with 95%
together.
accuracy.
( Cognitive/ knowledge)
PREVIOUS
KNOWLEDGE
Students know that
there are different
types of triangles
but they are unable
to name them
correctly.
SUGGESTED
RESOURCES
-Prepare different
Geo- Cards like
Scalene triangle,
Isosceles triangle,
Equilateral triangle,
Acute-angle triangle,
Obtuse-angle triangle,
right-angle triangle
and congruent
triangle as large as
possible using heavy
paper.
SUGGESTED ASSESSMENT
Activity:
Students have to draw the
different types of triangles
and label them correctly.
Marks are awarded by the
teacher according to the
rubric.
-Tangram triangle
pieces
-Tangram triangle
pieces
Summative Assessment:
Given the label drawing of
the different types of
triangles, students have to
list the properties of each
triangle.
Marks are awarded according
to the rubric.
Discover in groups of four,
that the longest side of the
triangles are opposite to
the largest angle with 100%
accuracy.
( Cognitive/Application)
Use the interior angle
properties of the different
triangle to solve geometric
problems individually with
90% accuracy.
(Cognitive/Application)
-Tangram triangle
pieces
-Geo Cards of the
different types of
triangles
-pictures of the
different types of
triangles
-Tangram triangle
pieces
- Pictures of the
different types of
triangles showing the
size of their interior
angles
Formative
Students have to identify the
longest side of the triangles
given.
Mark are awarded according
to observation.
Worksheet:
Students are given diagrams
of the triangles with two
angles and they need to solve
the geometric problem to
find the value of the third
angle.
Students are marked
according to the table of
specification for their
answers that is Knowledge,
Algorithmic Thinking and
Problem Solving.
SESSION 4
TOPIC- QUARDRILATERALS
GENERAL OBJECTIVES:
SPECIFIC OBJECTIVES
At the end of the unit
students should be able
to:
Define what a
quadrilateral is
individually with 100%
accuracy.
(cognitive/ knowledge)
Label the different types
of quadrilaterals
individually with 100%
accuracy.
(Cognitive/Knowledge)
Identify the properties of
the different types of
VOCABULARY
Parallelogram: In a
parallelogram opposite
sides are parallel and equal,
Opposite angles are equal,
diagonals bisect each other
and two pairs of congruent
triangles are formed by
diagonals.
Rhombus: In a rhombus
opposite sides are parallel,
all four sides are
equal,opposite angles are
equal, diagonals bisect each
other at right angles and
four congruent triangles are
formed by the diagonals.
Kites: Two pairs of equal
PREVIOUS
KNOWLEDGE
RESOURCES
ASSESSMENT
Formative – provide feedback
Orally define what a
quadrilateral is.
Students can
identify the basic
two-dimensional
shapes that is
square, rectangle,
and parallelogram
-Geoboard
-tangram pieces
-pictures of the
different types of
quadrilateral
Geoboard
-tangram pieces
Summative:
Students have to draw and
label the different types of
quadrilaterals.
Marks are awarded by the
teacher according to the
rubric.
Summative:
Identify the properties of the
quadrilaterals individually
with 95% accuracy.
(Cognitive/knowledge)
Use the properties of
quadrilaterals to solve
geometric problems
involving missing angles
individually with 95%
accuracy.
(Cognitive/ Application)
adjacent sides, one pair of
equal opposite angles and
diagonals intersect at right
angles.
Trapezium: One pair of
opposite sides are parallel
Rectangles: Opposite sides
are parallel and equal, have
four right angles and two
pairs of congruent triangles
are formed
Squares: Opposite sides
are parallel , all four sides
are equal, all four angles
are right angles and four
congruent triangles are
formed by the diagonals
-pictures of the
different types of
quadrilateral
different types of
quadrilaterals given. Marks are
award according to the rubric.
SummativeWorksheet:
Students are given diagrams of
the different types of
quadrilaterals with three or
two angles and they need to
solve the geometric problem
to find the value of the third or
fourth angle.
Students are marked according
to the table of specification for
their answers that is
Knowledge, Algorithmic
Thinking and Problem Solving.