Biology Laboratory Equipment, Types and Functions for SS 1

Class: SS 1
Term: First Term
Week: 5
Age: 15 years
Duration: 60 minutes
Subject: Biology
Curriculum Theme: Biology and Scientific Enquiry
Focal competence: Handling and caring for laboratory equipment
Key competencies/values: Creativity and Innovation; Information Literacy; Perseverance and Patience; Innovation
Skills:

• Drawing biological specimens appropriately
• Handling and care of laboratory apparatus

Previous Lesson: First Aid and Emergency Response in the Biology Laboratory
Topic: Laboratory Equipment
Subject Matter: Meaning of Laboratory Equipment, Basic Laboratory Equipment, Functions of Laboratory Equipment, Identification of Biology specimens using Laboratory Tools

Specific Objectives

By the end of the lesson, pupils/students should be able to:

Cognitive Domain

• Define Laboratory Equipment.
• Identify basic laboratory equipment.
• Describe the uses of basic laboratory equipment.
• State the uses of basic laboratory equipment.
• Explain the functions of laboratory equipment.

Affective Domain

• Appreciate the importance of careful handling and maintenance of laboratory equipment.
• Demonstrate patience and perseverance during microscopic examination of specimens.
• Show creativity in presenting information about laboratory equipment.

Psychomotor Domain

• Draw biological specimens appropriately after observation.
• Handle laboratory apparatus carefully and safely.

Social Domain

• Collaborate effectively with peers during practical activities.
• Present findings and observations clearly to the class.

Reference Materials

The following resources were used in planning this lesson:

• 2025 New Revised Senior Secondary Education Curriculum (SSEC)
• Relevant State Unified Scheme of Work
• The HeadTeacher Scheme of work For The New Revised Senior Secondary Education Curriculum (SSEC)
• A suitable Biology textbook for Senior Secondary School 1

Instructional Materials

The teacher will teach this lesson with the aid of:

• Charts showing various basic laboratory equipment
• Actual microscope
• Prepared slides and cover slips
• Test tubes
• Boiling tubes
• Petri dishes
• Beakers
• Measuring cylinders
• Funnel
• Spatula
• Forceps
• Scalpel/Razor blade
• Dissecting pins
• Hand lens/Magnifying glass
• Bunsen burner
• Tripod stand and Gauze mat
• Wash bottle
• Video clips on the functions of laboratory equipment

Rationale for the Lesson

This lesson is important for students to understand the fundamental tools used in biological investigations. Knowledge of laboratory equipment and their proper use is essential for conducting experiments safely and accurately, fostering practical skills, and developing a scientific approach to learning biology.

Prerequisite/Previous Knowledge

Students should have a basic understanding of what a laboratory is and the general concept of scientific investigation.

Lesson Content/Board Summary

Laboratory Equipment

Meaning of Laboratory Equipment

Laboratory equipment refers to the various tools, apparatus, and instruments used by scientists, researchers, and students to conduct experiments, observations, and analyses in a laboratory setting. These tools are designed to facilitate specific tasks, ensure accuracy, and promote safety during scientific investigations.

Basic Biology Laboratory Equipment and Their Functions

Biology laboratories utilise a range of equipment for studying living organisms and their processes. Some common examples include:

1. Microscope: An optical instrument used to magnify small objects, such as cells, tissues, and microorganisms, that are too small to be seen with the naked eye. It allows for detailed observation of microscopic structures.
2. Boiling Tubes: These are larger and thicker than test tubes, designed to withstand high temperatures for heating substances directly over a flame.
3. Test Tubes: Small, cylindrical glass tubes with a rounded bottom, primarily used for holding small amounts of liquids, mixing chemicals, or conducting small-scale chemical reactions and observations.
4. Slides and Cover Slips: A slide is a flat piece of glass used to hold specimens for examination under a microscope. A cover slip is a thin, flat piece of transparent material, usually glass, placed over the specimen on a microscope slide to protect the specimen and the microscope lens.
5. Petri Dishes: Shallow, cylindrical, transparent dishes with a lid, commonly used for culturing microorganisms (like bacteria and fungi) on agar media or for holding small biological samples for observation.
6. Beakers: Cylindrical containers with a flat bottom and a spout, used for holding, mixing, and heating liquids. They are generally used for approximate volume measurements.
7. Measuring Cylinders: Tall, cylindrical vessels with a spout and calibrated markings, used for accurately measuring the volume of liquids.
8. Funnel: A conical tool with a narrow stem, used for pouring liquids or fine-grained substances into containers with small openings, and also used in filtration setups.
9. Spatula: A small, flat, scoop-like tool used for transferring solid chemicals or biological materials from one container to another.
10. Forceps: Tweezer-like instruments used for grasping, holding, or manipulating small objects or delicate specimens during experiments or dissections.
11. Scalpel/Razor Blade: Sharp cutting instruments used for making precise incisions or dissecting biological specimens.
12. Dissecting Pins: Pins with a T-shaped head, used to hold specimens in place on a dissecting tray during dissection.
13. Hand Lens/Magnifying Glass: A simple convex lens used to magnify small objects for closer observation without the need for a microscope.
14. Bunsen Burner: A common piece of laboratory equipment that produces a single open gas flame, used for heating, sterilisation, and combustion.
15. Tripod Stand and Gauze Mat: A tripod stand is a three-legged support used to hold apparatus like beakers or flasks over a Bunsen burner. A gauze mat (or wire gauze) is placed on the tripod stand to provide a flat surface for heating and to spread the heat evenly.
16. Wash Bottle: A plastic bottle with a nozzle, used for rinsing laboratory glassware, adding distilled water, or washing specimens.

Identification of Biology Specimens Using Laboratory Tools

Laboratory tools are indispensable for identifying and studying biological specimens. Their functions enable detailed examination and analysis:

1. Microscopes: Allow for the identification of microscopic organisms (e.g., bacteria, protozoa), cellular structures (e.g., nucleus, chloroplasts), and tissue organisation that are invisible to the naked eye. By observing distinct features like cell shape, internal organelles, or colonial arrangements, specimens can be classified.
2. Hand Lenses/Magnifying Glasses: Used for preliminary identification of small but visible features on larger specimens, such as insect parts, plant structures (e.g., flower parts, leaf veins), or surface textures, before microscopic examination.
3. Dissecting Tools (Scalpels, Forceps, Dissecting Pins): Enable the careful opening and manipulation of larger specimens (e.g., frogs, flowers, organs) to expose internal structures. Identification is based on the arrangement, shape, size, and texture of these internal parts, which helps in understanding their function and classification.
4. Petri Dishes: Used to grow cultures of microorganisms, allowing for the observation of colony morphology (shape, colour, texture) which is a key step in identifying different species of bacteria or fungi.
5. Slides and Cover Slips: Essential for preparing specimens for microscopic observation, ensuring they are properly mounted and protected, which facilitates clear and accurate identification of their minute features.

Teaching Methods/Instructional Techniques

Discussion, Demonstration, Guided Practice, Question and Answer, Explanation, Observation, Practical Activity, Video Presentation, Group Work

Instructional Procedures

Step 1: Introduction

Time: 5 minutes

Teaching Skill: Questioning/Recalling

Teacher’s Activity: The teacher greets the students and asks them to recall what they understand by a “laboratory” and what activities are carried out there. The teacher then introduces the topic by explaining that to carry out these activities, specific tools are needed.

Pupils’ Activity: Pupils respond to the questions and listen attentively to the introduction.

Learning Point: Introduction to laboratory tools

Step 2: Meaning of Laboratory Equipment

Time: 10 minutes

Teaching Skill: Explanation/Definition

Teacher’s Activity: The teacher explains the meaning of laboratory equipment, providing examples and emphasising their importance in scientific investigations. The teacher writes the definition on the board.

Pupils’ Activity: Pupils listen, ask questions for clarification, and attempt to define laboratory equipment in their own words.

Learning Point: Definition of laboratory equipment

Step 3: Identification of Basic Laboratory Equipment

Time: 10 minutes

Teaching Skill: Demonstration/Identification

Teacher’s Activity: The teacher displays charts of basic laboratory equipment and, where available, shows actual equipment. The teacher guides students to identify each piece of equipment by name.

Pupils’ Activity: Pupils observe the charts and actual equipment, identifying and naming each item as guided by the teacher.

Learning Point: Naming laboratory equipment

Step 4: Functions of Basic Laboratory Equipment

Time: 10 minutes

Teaching Skill: Explanation/Discussion

Teacher’s Activity: The teacher explains the specific functions and uses of each identified piece of laboratory equipment, relating them to practical biological investigations.

Pupils’ Activity: Pupils listen, take notes, and ask questions regarding the uses of the equipment.

Learning Point: Uses of laboratory equipment

Step 5: Practical Use of Microscope

Time: 10 minutes

Teaching Skill: Guided Practice/Demonstration

Teacher’s Activity: The teacher guides students individually or in small groups to use a microscope to examine biological specimens on prepared slides in the laboratory, demonstrating proper handling and focusing techniques.

Pupils’ Activity: Pupils follow the teacher’s instructions, carefully use the microscope to observe specimens, and make simple sketches of their observations.

Learning Point: Microscope handling and use

Step 6: Video Presentation and Discussion

Time: 5 minutes

Teaching Skill: Audiovisual/Facilitation

Teacher’s Activity: The teacher plays short video clips illustrating the functions and safe handling of various laboratory equipment. After the video, the teacher facilitates a brief discussion and asks students to make presentations on what they observed.

Pupils’ Activity: Pupils watch the video clips, participate in the discussion, and present their observations and understanding of equipment functions.

Learning Point: Equipment functions and safety

Step 7: Evaluation/Review

Time: 5 minutes

Teaching Skill: Questioning/Assessment

Teacher’s Activity: The teacher evaluates the learning by asking the following questions:

1. What is laboratory equipment?
2. Mention three basic biology laboratory equipment.
3. State one function of a microscope.
4. Describe how a petri dish is used in biology.

Pupils’ Activity: Pupils answer orally and in writing.

Learning Point: Understanding laboratory equipment

Step 8: Note-Taking

Time: 10 minutes

Teaching Skill: Guided Writing

Teacher’s Activity: The teacher guides pupils/students to copy the essential Board Summary notes on the meaning, types, and functions of biology laboratory equipment into their notebooks.

Pupils’ Activity: Pupils/students copy the notes carefully into their notebooks.

Learning Point: Recording lesson summary

Step 9: Conclusion

Time: 5 minutes

Teaching Skill: Summarisation

Teacher’s Activity: The teacher summarises the key points of the lesson, reiterating the importance of laboratory equipment in biology and the need for careful handling. The teacher encourages students to always observe safety precautions in the lab.

Pupils’ Activity: Pupils listen and ask any final questions.

Learning Point: Reinforcing lesson importance

Continuous Assessment/Further Study

Type: Homework/Practice Exercise

Instruction: Answer the following questions in your notebook.

1. Draw and label any five biology laboratory equipment you learned today.
2. Explain the difference in function between a test tube and a boiling tube.
3. Why is it important to use a cover slip when examining a specimen under a microscope?
4. Research and list two safety rules to observe when using a Bunsen burner in the laboratory.

Lesson Keywords

• Laboratory – A room or building equipped for scientific experiments, research, or teaching.
• Equipment – The necessary items for a particular purpose.
• Microscope – An optical instrument used for viewing very small objects.
• Specimen – An individual animal, plant, or mineral used as an example of its species or type for scientific study.
• Dissection – The action of cutting up a body or plant to study its internal parts.
• Culture – The growth of microorganisms in a prepared nutrient medium.

Differentiation

For students who grasp concepts quickly, encourage them to research more complex laboratory equipment not covered in class and present their findings. For students needing additional support, provide simplified diagrams and one-on-one guidance during practical sessions, focusing on identifying and stating the function of a smaller set of essential equipment.

Suggested Lesson Videos

YouTube search for “biology laboratory equipment functions SS1 Nigeria”