Teaching Techniques for Teaching Techniques for Biology PracticalsBiology Practicals

By:By:Maznah AliMaznah Ali

School of Educational StudiesSchool of Educational StudiesUniversiti Sains MalaysiaUniversiti Sains Malaysia

Biology practicalsBiology practicals All activites in biology investigation is All activites in biology investigation is

termed as practicalstermed as practicals Some activities are for observationsSome activities are for observations Some activities are for testing Some activities are for testing

hypothesishypothesis

2 types of Biology practicals:2 types of Biology practicals: ExperimentsExperiments observation observation

Biology practicalsBiology practicals

Biology practicals may be carried out in:Biology practicals may be carried out in: LabLab Outside labOutside lab

Experiments are carried out when there’s > 1 Experiments are carried out when there’s > 1 class periodclass period

When there is only 1 class period, demonstration When there is only 1 class period, demonstration by the teacher or simple observation practical is by the teacher or simple observation practical is carried outcarried out

Biology PracticalsBiology Practicals Which activity/practicals is Which activity/practicals is

considered as considered as experimentexperiment??

Scenario AScenario A

Investigating the structure of blood Investigating the structure of blood cellscells

Biology PracticalsBiology Practicals

Scenario BScenario B

Investigating the effect of osmosis on Investigating the effect of osmosis on red blood cellsred blood cells

Biology Biology PracticalsPracticals

Experiment Experiment Scenario A / Scenario B?Scenario A / Scenario B?

Scenario AScenario A Investigating the structure of blood cellsInvestigating the structure of blood cells

Scenario B?Scenario B?

Investigating the effect of osmosis on red Investigating the effect of osmosis on red blood cellsblood cells

Biology PracticalsBiology Practicals

Experiments are to test the Experiments are to test the hypothesishypothesis There must be a hypothesis in There must be a hypothesis in

experimentsexperiments With the 3 variables :With the 3 variables :

Manipulated variableManipulated variable Responsive variableResponsive variable Controlled aspectControlled aspect

Preparation Before ClassPreparation Before Class

Try out the activity / practicalTry out the activity / practical Prepare:Prepare:

list of apparatus and materials for all list of apparatus and materials for all the groupsthe groups

ProceduresProcedures Special points (safety and effectiveness)Special points (safety and effectiveness) Questions for discussionsQuestions for discussions

During ClassDuring Class

PART 1:PART 1:

1.1. Form groups and elect groups’ representativesForm groups and elect groups’ representatives

2.2. Groups representatives collect the list, the Groups representatives collect the list, the apparatus and materials and check themapparatus and materials and check them

3.3. Discuss the activity and the special points with Discuss the activity and the special points with the classthe class

4.4. Let the students carry out the activityLet the students carry out the activity

During ClassDuring ClassPART 2PART 2

1.1. Guide students during the activity and Guide students during the activity and check for safety and securing the smooth check for safety and securing the smooth flow of the practical and data recordingflow of the practical and data recording

2.2. Have students clean up the table and Have students clean up the table and return the apparatus (manipulative skills)return the apparatus (manipulative skills)1.1. Check with the check list for the number and Check with the check list for the number and

condition of apparatus condition of apparatus

During ClassDuring Class Discuss the result of the activity:Discuss the result of the activity:

Discussion is by groupsDiscussion is by groups Collect all the resultsCollect all the results Have each group present their findingsHave each group present their findings

Discuss problems that emergedDiscuss problems that emerged Guide students to conclude the activityGuide students to conclude the activity

Evaluate students understanding of the Evaluate students understanding of the concept learned from the activity.concept learned from the activity. Quiz, exercise, homework, concept mappingQuiz, exercise, homework, concept mapping

THANK YOUTHANK YOU FOR YOUR ATTENTIONFOR YOUR ATTENTION