Penwood High School Teacher: Renee Chaffatte Subject: Integrated Science Class :9H1,9S1 Duration: 1 hours 20 minutes Date: January 6-17, 2020 Unit title: Reproduction Theme: Exploring science and the environment General Objective Students will be able to use the scientific methods to Understand the scientific process and the impact of air and water on the environment and our everyday life Specific Objectives TEACHER’S ACTIVITIES ENGAGEMENT At the end of the lesson, Teacher shows a picture of organisms each student will be able and their young. to: State the importance of reproduction State the types of STUDENT’S ACTIVITIES Students look at the picture given and answer the question when being ask by the teacher. SOCRATIC QUESTIONS Q: What do you observe about the picture? A: The animal with their young / baby. Q: Why animals must produce young? A: To maintain their species. REMARKS Reproduction – pembiakan reproduction. State what fertilization is Q: What is the name of process involved in produces their young? A: Reproduction Describe internal and external fertilization Compare and contrast sexual and asexual reproduction. Classify animals and plants according to their ways of reproduction. Students form the group and look at the picture. EXPLORATION Teacher divides students into 6 groups. Q: In your group, discuss why these animals need to reproduce? A: To increase the number of individual / offspring of the same species. To ensure the species do not extinct. Teacher still shows the picture of animals in the engagement session. Teacher asks a few questions. Student writes the important points in their notebook. . Student observes the pictures given. Teacher shows another picture to students. Teacher introduces the name of this organism which is Planaria. Q: Is it only the animal shown before need to reproduce? Why? A: No because all living things need to reproduce. Q: State the other living things that can reproduce. A: Any answer of living thing is accepted. Q: From the picture given, what can you observes? A: New Planaria is form. Q: What is the process involved to form a new Planaria? A: Reproduction Q: Is the way for it to reproduce same as the way Sperm – male sex cell Ovum – female sex cell of cat, orang utans, or sheep to reproduce? A: No. Q: Why do you say no? A: Because cat, orang utans and sheep give birth to their young. Q: How about Planaria? A: Planaria reproduce from the part of its own body. Q: For giving birth to new young, is there involving any organs? A: Yes. Q: What are the organs? A: Male sex organs and female sex organs. Q: What are the male and female sexes organs produce? A: Sperm and ovum Q: How about Planaria? A: Reproduction of Planaria did not involve sex organs. Q: What sex organs produce? A: Sex cell Gametes – gamet / sel seks Sexual reproduction – pembiakan melibatkan gamet Teacher tells student that there is another name to represent sex cell which called as gamete where female sex organ will produce female gamete called ovum and male sex organs will produce male gamete called sperm. Teacher then continues the lesson by introduce the types of reproduction. Teacher explains that from the picture given, students can separate the types of reproduction into two which is involve gametes and did not involve gametes. To make student can give the correct terms for these two type of reproduction, teacher guide them by write blank line for them to fill in with suitable word on whiteboard. Asexual reproduction – pembiakan tanpa melibatkan gamet Q: So, what is the name of type of reproduction? A: Sexual reproduction and asexual reproduction. __ __ __ __ __ __ reproduction. __ __ __ __ __ __ __reproduction. Students try to fill the word until they can give the correct answer. Then, teacher gives student appendix 1. They are asked to identify the type of reproduction of the organism. Q: How sexual reproductions occur? A : By the fusion of male and female gamete Q: How asexual reproductions occur? A : By budding, binary fission, spore formation, regeneration and vegetative reproduction Fusion – persenyawaan Teacher gives 5 minutes for student to identify the correct answer. Q: Name the type of reproduction for: A: Hydra & yeast– Budding Paramecium & Amoeba – Binary Fission Mucor, fern – Spore Formation Starfish – Regeneration Onion & Ginger – vegetative reproduction Teacher discusses the answer with student. Next, teacher gives student appendix 2. They are asked to identify the way / method of reproduction of organism in the picture. This is to classify animals and plants according to their ways of reproduction Teacher discusses the answer with student. Students watch the video. EXPLANATION: Teacher shows a video about external fertilization of frog to the student and asks them to watch it clearly. Q: In your opinion, what does these animals is doing? A: They undergoes mating ACTIVITY 1 Then, teacher shows picture of a frog and grasshopper. Q: Can you see the tiny black ball from the frog’s picture given? A: Yes Teacher asks students to observe the picture and after that teacher ask a few questions. Q: So, what do you think it is look like? A: It looks like the eggs. Q: Where are the eggs is located? A: They are floating on the water. Q: Why that egg floating on water? A: They are ready for sperms to come. Student discuss about internal and external fertilization. Teacher asks students to discuss for a few minutes and ask a few question related to picture given. Q: What sperms do to the eggs? A: The sperms will fertilize the egg. Q: Where the sperm fertilized the egg? A: In the water. Q: Is the fertilization occurring inside or outside the frog’s body? A: Outside the frog’s body. Q: How about grasshopper, can you see the egg outside the grasshopper? A: There is no egg outside the grasshopper. Teacher introduce another terms used to describe the fertilization outside organism’s body which called as external fertilization. Q: So, where is the egg of grasshopper? A: Inside the female body. Q: If the eggs are inside the female body, how the sperms fertilize the egg? A: Male grasshopper need to insert the sperm inside the female body. Q: So, where the fertilization occurs? A: Inside the female body. Teacher then introduce another terms used to describe the fertilization inside organism’s body which called as internal fertilization. Q: What is means by external fertilization? Give another example instead of frog. A: Fusion of the nuclei of the male gamete and the female gamete outside the female’s body. Example is fish. Q: What is means by internal fertilization? Give another example instead of grasshopper. A: Fusion of the nuclei of the male gamete and the female gamete in the female’s body. Example is any mammals, birds, reptiles and insect. Students complete the worksheet 1 ELABORATION: Teacher asks students to write similarities and differences between asexual and sexual reproduction in worksheet 1. Any of students in the class stand up and give the answers. EVALUATION: Teacher asks volunteer among the students to recall about type of reproduction and give the important to reproduce. Students that have been choose by teacher come up with their lesson summaries. Teacher asks students to summaries what they have learned today. Lastly, teacher gives students worksheet 2 as their homework.
