Lesson Planning of Types of Line
Subject Mathematics
Grade 4th
Student’s` Learning Outcomes
- Measure length of line in centimetres and
millimetres by using ruler and divider
- Draw a straight line of given length by using
ruler.
Information for Teachers
- Steps for measuring length of a line segment
by divider:
- Divider: open the divider so that its two
edges touch each end of the line.
- Place one side of the divider in front or on
the mark zero of the scale.
- Read the mark where the other side of divider
is touching the scale.
- Record your observation.
- During this lesson, the teacher should also
consult textbook wherein and whenever it is required.
Material / Resources
Writing board, chalk/marker, duster, wooden
geometry box, one chart paper cut in small strips and one line of different
length drawn on each, one chart paper cut in small strips with different measurement
written on each, as;
Introduction
- Measure the length by using divider.
- Recall the use of ruler with students.
- Draw different lines on board and identify
straight lines with the help of students.
- Erase the board and then through wooden scale
measure length of any object around, as; chair or table legs or notebook sides.
- Introduce the topic of measuring length.
Development
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Activity 1
Activity with a ruler / scale:
- Ask all students to take out their rulers /
scale and read the points on it.
- Let them recall and repeat what they
learned in 3rd grade about measuring lengths with ruler.
- Draw their attention to the small marks
between the centimetres and introduce the term millimetres.
- Ask them to measure the length of their geometry
boxes or books and collect their responses.
- Some students might be able to do. Then give
your input as follows: as;
- Keep the ruler along the side of geometry box
which you want to measure.
- Make sure that the zero of scale lies along
the starting point of the side to be measured.
- Read the scale. The number with bigger line
shows centimetres.
- How many centimetres is your ruler?
- Count the small lines after the centimeter
reading you got, that how much they are?
- These numbers are millimetres.
- Hold a pen in your hand and demonstrate its
length of measurement with a ruler. Explain the measurement procedure to the
students, as; the length of my pencil has got big lines till 8 and 7 small
lines, hence, its length is 8 cm and 7 mm
- Repeat the steps with any other small
object so that they are clear.
- Ask students to get ready for work in pairs.
- Distribute the cardboard strips to each of
the pair and ask them to measure its length and write on strip as cm, mm.
- Ask the students to exchange work with the
pair sitting next to them and ask them to check the work done.
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Activity 2
MEASURING WITH A DIVIDER:
- Esquire students about the use of divider.
- Demonstrate how to measure by using divider
as mentioned in information for teachers.
- Ask students to get ready for the activity,
“Do as I say!”
- Repeat the steps verbally.
- Ask them to perform all the steps on the
cardboard strips you have already given to each pair.
- Ask if the measurement is the same as
before?
- Students will attempt questions from the
book individually and announce the answers to the whole class.
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Activity 3
DRAWING LINE WITH RULER:
- Invite student on the board to review
whatever is done up till now.
- Take the wooden scale and draw a line of
15 cm on the board and ask how many of them can draw a line of 5 cm on their copies.
(Just to provoke their interest).
- Say each of the steps in key point loudly
and perform each of it on board.
- Ask students to repeat the steps with you
for the same figure done on board.
- Distribute the strips with measurements
written and ask them to draw lines on the strips. Also ask them to write
their names. Announce the limit.
- Then collect the strips to be checked by
you.
- Assign them different questions like 3 cm,
6 mm, 4 cm, 7 cm, 20 mm etc. and announce the time limit.
- Ask them to recheck their lengths by using
divider and scale.
- Ask them for peer checking.
- Announce to measure the length of their any
family members index finger.
- Next day, return the strips with encouraging
remarks, as; wrong attempts write the steps for correction by student.
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Sum up / Conclusion
- Compass is used to draw circles or arcs
- Set-square is used to draw parallel and
perpendicular lines.
- Protractor is used for drawing different
angles.
Assessment
- Prepare a worksheet with some questions for
examples; as;
- Measure the length of side AB and CD of the
given pictures / frames /cuttings
- Teacher should also involve the students to
solve exercise at the end of chapter in the textbook.
Follow up
- You can take any news-paper cutting or photos
or pictures from anywhere to let the students measure the lengths.
- Measuring the pictures or lines from textbook
will increase their understanding and application I real life. It will enhance
their estimation about lengths of any object as well.
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