2. PELIMINARY DETAILS
CURRICULUM STATEMENT
Through performing activities, observing activities, participating in group discussions,
receiving teacher scaffolding and the teacher construct the concept of chromatography.
CONTENTANALYSIS
A) Scientific Terms : chromatography
B) Facts : 1) Colors in the sketch pen is a mixture of more than two inks
2) Chromatography is used to separate poisonous substance mixed
with blood.
C) Concepts : Chromatography is the method used to separate more than one
solute dissolved in the same solvent
LEARNING OUTCOMES
A) Cognitive competencies
The learner become able to
Name of the teacher : Sophymol K Pappachan
Subject : Chemistry
Unit : Properties of matter
Topic : Chromatography
Class : VIII .C
School : Marthoma School for girls
Duration : 40
Date : 29/07/2015
3. Recall the concept of chromatography
Defines the major concepts
Explains the process of chromatography
Identities the difficult examples of chromatography
B) Affective competencies
Show willingness to know more about the concept
Show ideas and views related to these concept
Develops positive attitude towards certain phenomena
Realizes the importance of chromatography.
C) Technological competencies
----------Searches internet for more example
PRE-REQUISITES
a) Cognitive Domain : Knowledge about various methods separation of mixture.
b) Affective Domain : Skill to do activities.
TEACHING –LEARNING MATERIALS
Filter paper, water, beaker, ink
4. CLASSROOM INTERACTION
PROCEDURE
EXPECTED RESPONSE
INTRODUCTION
Teacher starts the class by asking about
various separeting method and ask the
questions whether we can separate
more than one colored solute dissolved
in same solvent
Students share their experience
Presentation
Teacher shows the video of blackspot
using a sketchpen and at one end of a
filter paper cut like a ribbon and keep
this dipped in the water in a beaker.
VIDEO
DISCUSSION POINTS
1. What can be observe in the water level in
the filter paper asends ?
2. What can be inside from the different
colors found in filter paper?
Students observe the video
Students give answer to this question.
CONCEPT FORMATION
Student understand knowledge about
chromatography though activity i.e.,
chromatography is the method used to separate
more than one solute dissolved in the same solvent
. this method was first employed for separating
colored substance and hence this process came to
be known as chromatography
Students answered the question
ACTIVITY 2
Teacher give worksheet to the students $
ask the students to observe the card
Students said the definition
CORRECT WRONG
1. To separate
components
from dyes.
1. To Separate
sand and iron
powder
Students analyse the card.
5. 2. To separate
poisonous
substance
mixed with
blood
2. To separate
petrol and
kerosene
3. To separate
sugar from
sugar solution
Teacher ask the students to analyze peculiarities of
the above example
CONCEPT FORMATION
Above tick marked sentence are the situation where
chromatography is applied and its merits are very
small amount of substance are necessary for this
technique and more than two solute from the
solvent can removed.
Students made the concept.
SUMMARISATION
Teacher summarises the concept of
chromatography
Student listen the class.
REVIEW
Teacher asked the followed question to the students
1. What is chromatography?
2. Give example for chromatography is
employed.
Students give the answer.
EXTENTED ACTIVITIES
1. The basis of chromatography is
adsorption is it true or false explain
Students write down the question in
notebook
