Free preview · Senior 1 Biology · Laboratory activities
Senior 1 laboratory activities
14 units · 28 activities. In every unit, activity 1 is improvised (simple local materials) and activity 2 is conventional (school laboratory equipment): two different experiments. Below are 5 free pages; then get the whole level in one PDF.
- Title and aim of every experiment
- Required apparatus and safety notes
- A clear, labelled drawing of the set-up
- Step-by-step procedure and a results table to fill in
- Observation and conclusion
- Three questions per activity, with sample results and answers at the end of the unit
See all 28 activities of this level and what each one is about
- Unit 1: Introduction to Biology
- 1.1 Improvised · Living or non-living? Seeds and stones. To compare a living thing (a seed) with a non-living thing (a stone) and identify characteristics of life.
- 1.2 Conventional · Living things in a drop of pond water. To observe small living organisms in pond water with a microscope and describe their characteristics.
- Unit 2: Introduction to Classification of Organisms
- 2.1 Improvised · Making a key for leaves. To sort leaves into groups and build a dichotomous key to identify them.
- 2.2 Conventional · Using a key to identify invertebrates. To use a dichotomous key and a hand lens to identify collected invertebrates.
- Unit 3: External Structure and Importance of a Flowering Plant
- 3.1 Improvised · Parts of a whole plant. To identify the external parts of flowering plants and compare tap roots with fibrous roots.
- 3.2 Conventional · Dissecting a flower. To identify and draw the parts of a flower.
- Unit 4: Magnifying Instruments and Biological Drawings
- 4.1 Improvised · A phone-camera microscope. To make a simple magnifier for a phone camera and use it to observe and draw small structures.
- 4.2 Conventional · Using the light microscope. To learn to use a light microscope correctly and to find the magnification and field of view.
- Unit 5: Plant and Animal Cells
- 5.1 Improvised · A plastic-bag model of a cell. To build a model of a plant cell and an animal cell from kitchen materials and compare their parts.
- 5.2 Conventional · Onion and cheek cells under the microscope. To prepare and observe plant and animal cells and compare them.
- Unit 6: Levels of Organisation in Multicellular Organisms
- 6.1 Improvised · Tissues in a chicken wing and a celery stalk. To identify different tissues that make up organs in an animal and a plant.
- 6.2 Conventional · Prepared slides of tissues. To observe and compare different animal and plant tissues under the microscope.
- Unit 7: Food Nutrients and Diet
- 7.1 Improvised · Testing foods for starch and fat. To test common foods for starch (with iodine tincture) and fat (grease-spot test).
- 7.2 Conventional · Testing for reducing sugar and protein. To use Benedict’s and biuret tests to detect reducing sugar and protein in foods.
- Unit 8: Structure and Functions of the Human Gas Exchange System
- 8.1 Improvised · A bottle model of the chest. To build a model showing how the diaphragm helps us breathe in and out.
- 8.2 Conventional · Comparing inhaled and exhaled air. To show that exhaled air contains more carbon dioxide than inhaled air.
- Unit 9: Tropic Responses
- 9.1 Improvised · The shoebox maze: phototropism. To show that plant shoots grow towards light.
- 9.2 Conventional · Roots and gravity: the clinostat. To show that roots grow towards gravity (positive geotropism) using a clinostat as a control.
- Unit 10: Skeletal Systems of Organisms
- 10.1 Improvised · What makes bones hard and strong?. To show that bones contain both mineral salts (hardness) and organic material (flexibility).
- 10.2 Conventional · Bones and joints of the human skeleton. To identify the main bones of a human skeleton model and the types of joints, and measure their range of movement.
- Unit 11: Classification of Diseases
- 11.1 Improvised · How a communicable disease spreads. To model how an infectious disease spreads through contact in a group.
- 11.2 Conventional · Germs on hands: the value of washing. To compare the number of microorganisms on unwashed and washed hands by growing them on agar.
- Unit 12: Social Factors that Affect Good Health
- 12.1 Improvised · A hygiene and sanitation survey. To survey the hygiene and sanitation facilities at home and at school and relate them to health.
- 12.2 Conventional · How clean is our drinking water?. To compare the turbidity and pH of water from different sources.
- Unit 13: Human Reproductive System and Sexual Maturation
- 13.1 Improvised · The adolescent growth spurt. To plot growth data and identify the growth spurt that happens during puberty.
- 13.2 Conventional · Reproductive cells under the microscope. To observe prepared slides of reproductive organs and cells and relate their structure to function.
- Unit 14: Decision-making Regarding Sexual Relationships
- 14.1 Improvised · A decision tree for difficult choices. To practise a step-by-step decision-making model for situations young people may face.
- 14.2 Conventional · How one choice affects many: an exchange experiment. To show, with a chemical model, how a single risky choice can spread consequences to many people.
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