📘 COVER PAGE
Name of School: Pamushana High School
Name of Candidate: Tapuwanashe Chikaura
Candidate Number: 0341
Centre Number: 060844
Level: Form 4
Learning Area: Biology
Project Title: Using Natural Mosquito Repellents to Reduce Mosquito Bites at
School
Project Objective:
To create and test a natural mosquito repellent using local plants to reduce mosquito
bites and promote good health among students at Pamushana High School.
✅ STAGE 1: PROBLEM IDENTIFICATION (5 Marks)
Statement of the Problem
Mosquito bites are common among students, especially in hostels and classrooms during
evening prep. This increases the risk of malaria and discomfort, affecting learning and rest.
Statement of Intent
To develop a safe, natural mosquito repellent using ingredients like lemon grass and garlic,
which can help protect learners from mosquito bites.
Design Specifications
Use locally available natural ingredients (e.g., lemon grass, garlic, eucalyptus oil)
Mix to form a spray or lotion
Should be safe on skin and clothes
Easy to apply and affordable
🔍 STAGE 2: INVESTIGATION OF RELATED IDEAS
(10 Marks)
1. Commercial Mosquito Sprays
o Use: Pharmacies and retail stores
o Advantages: Effective, long-lasting
o Disadvantages: Expensive, contains harmful chemicals
2. Mosquito Nets
o Use: Boarding schools (e.g., Zimuto High)
o Advantages: Offers full protection at night
o Disadvantages: Not usable during day or prep
3. Burning Lemon Grass
o Use: Rural homes in Masvingo
o Advantages: Natural, cheap
o Disadvantages: Smoke causes coughing, cannot be used indoors
4. Garlic and Oil Repellent
o Use: Tried in Uganda school project
o Advantages: Safe, uses home ingredients
o Disadvantages: Strong smell may be unpleasant
💡 STAGE 3: GENERATION OF IDEAS (10 Marks)
1. Lemon Grass Spray
o Strengths: Natural, easy to make
o Weaknesses: Needs frequent reapplication
2. Garlic and Eucalyptus Oil Lotion
o Strengths: Strong repellent
o Weaknesses: Smell may not be liked by all
3. Planting Repellent Plants Around Hostels
o Strengths: Long-term solution
o Weaknesses: Takes time to grow
🛠️STAGE 4: DEVELOPMENT OF SELECTED IDEA (10
Marks)
Selected Idea: Lemon Grass and Garlic-Based Repellent Spray
Why Chosen:
Uses available materials
Safe for use on the body and clothes
Quick and simple to produce and test
Materials Used:
Fresh lemon grass
Garlic cloves
Water
Ethanol or vinegar (preservative)
Spray bottles
Process:
1. Crush garlic and lemon grass
2. Boil in water for 15 minutes
3. Add ethanol and let cool
4. Pour into spray bottles
5. Label and apply to arms and legs
(Attach photos of preparation and testing on students)
📊 STAGE 5: PRESENTATION OF RESULTS (10 Marks)
5 students used the spray for 3 evenings
Only 1 reported any mosquito bites
No skin irritation occurred
Users preferred the natural smell over chemical repellents
Students requested bottles for dorm use
🧾 STAGE 6: EVALUATION AND
RECOMMENDATIONS (5 Marks)
Evaluation:
The project was successful. The natural spray reduced mosquito bites significantly and was
safe. Some students disliked the garlic smell, but this can be improved.
Challenges:
Strong garlic smell was unpleasant to some
Limited supply of materials slowed production
Recommendations:
Add scented oils like lemon or lavender to improve smell
Produce in larger quantities for school-wide use
Educate students on natural repellent benefits
Consider planting repellent plants around hostels for long-term protection
If you want, I can help format this into a full written report or prepare drawings/photos
sections for your project. Would you like me to?
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