Reproduction, Contraceptives, and Pregnancy

Grade 6 · General Science

Semester 2 | Period 4 | Week 23

Download the Lessonotes Mobile Liberia app for faster lesson access on Android and iPhone.

Get it on Google Play Get it on the Apple App Store

Subject: General Science

Semester: 2

Period: 4

Week: 23

School Name:
Teacher’s Name:
Subject: General science
Grade Level: Grade 6
Date: Week 23
Lesson Duration: 45 minutes
Week & Period: Week 23, Period 4
Topic: Reproduction, Contraceptives, and Pregnancy
Sub-topic: Menstrual cycle, fertilization, pregnancy, contraceptives, abstinence
Learning Objectives
By the end of the lesson, students should be able to explain the menstrual cycle and fertilization, describe pregnancy stages and signs, identify contraceptive types and importance, and explain why abstinence is the best prevention for teenagers.

Previous Knowledge
Students already know about the reproductive system and puberty.

Instructional Materials
Diagrams of menstrual cycle, fertilization, pregnancy stages, contraceptives, markers, chart paper.

Lesson Development – ABC Model
A – Anticipation (Warm-up / Starter)
Time: 5–10 minutes
Ask learners what they know about pregnancy and methods to prevent unwanted pregnancy. Discuss briefly.

B – Building Knowledge (Main Lesson Body)

Time: 25–30 minutes

Learners’ Activities (Expanded):

  • Students observe clear diagrams or models of the female reproductive system, the menstrual cycle chart, and stages of pregnancy.
  • In groups, they label stages of the menstrual cycle (menstruation, ovulation, preparation of the womb) and discuss what happens in each.
  • Teacher uses simple language to explain fertilization (when a sperm meets an egg) and the stages of pregnancy: zygote → embryo → fetus → baby (birth).
  • Students examine pictures of different contraceptives (condoms, pills, injections, implants, IUDs) and brainstorm how each works.
  • Teacher emphasizes abstinence (choosing not to have sex) as the safest method for teenagers to avoid pregnancy and STIs.
  • Role-play activity: A friend asks why using protection is important. Students act out answers.

Assessment Checks:

  • Teacher asks:
    • What happens during ovulation?
    • Name one stage of pregnancy.
    • What is one contraceptive method and how does it work?
  • Learners answer on mini-whiteboards or orally in class.

Notes (Expanded & Detailed):

  • Menstrual Cycle:
    • A monthly change in a woman’s body to prepare for pregnancy.
    • If no fertilization happens, blood flows out (menstruation/period).
    • Stages:
  1. Menstruation (bleeding phase, uterus sheds lining).
  2. Ovulation (an egg is released).
  3. If fertilized, pregnancy begins; if not, the cycle repeats.
  • Fertilization & Pregnancy Stages:
    • Fertilization = sperm joins an egg.
    • Stages:
  1. Zygote (first cell after fertilization).
  2. Embryo (grows in first weeks).
  3. Fetus (developing baby after about 8 weeks).
  4. Birth (baby delivered after about 9 months).
  • Contraceptives (methods to prevent pregnancy):
    • Condoms (barrier, also protect from STIs).
    • Pills (hormonal, prevent ovulation).
    • Injections/implants (long-term hormonal methods).
    • IUD (Intrauterine Device) (placed inside uterus to prevent pregnancy).
    • Abstinence (choosing not to have sex – safest method for teenagers).
  • Importance of Contraceptives:
    • Prevent unwanted pregnancy.
    • Reduce spread of sexually transmitted infections (STIs).
    • Allow families to plan when to have children.

Examples learners can relate to:

  • A woman missing her period may be pregnant.
  • In rural Liberia, some clinics provide family planning services like contraceptive injections.
  • A teenager who chooses abstinence avoids early pregnancy and the challenges it brings.

Practical Activities:

  1. Menstrual cycle calendar activity: Students use a simple 28-day cycle chart to mark ovulation and menstruation days.
  2. Pregnancy stages chart: Groups create posters showing zygote → embryo → fetus → birth.
  3. Contraceptive role cards: Teacher gives cards with contraceptive names; students explain how each works in simple terms.
  4. Awareness poster: Learners design posters with messages like “Abstinence keeps me safe” or “Condoms protect health.”

Extra Assessments:

  • Multiple choice: Which stage of pregnancy is the baby called an embryo? A. Birth B. First weeks C. 8 months D. 9 months
  • Short answer: Give one advantage of using condoms.
  • Homework: Interview a health worker, parent, or elder about the importance of family planning and write 5–6 sentences.

C – Consolidation (Conclusion & Assessment)
Time: 5–10 minutes
Summary: Recap menstrual cycle, fertilization, pregnancy, contraceptives, and importance of abstinence.

Evaluation Method (Expanded)
Exit slip/quiz: Write one stage of pregnancy and one contraceptive method. Teacher collects slips and provides oral feedback.
Assignment (Expanded): Draw and label the menstrual cycle and fertilization process; list two contraceptives.
Follow-up Activity: Discuss in groups why abstinence is important for teenagers.
Differentiation / Inclusive Strategies: Use diagrams and charts, group discussions, and simplified explanations for learners needing support.

Teacher’s Reflection (After Class)
What worked well? ___________________________________________
What needs improvement? ____________________________________
Students’ engagement level: ☑ High ☑ Medium ☑ Low