NLC Grade 7 Lesson - More About Cells.pptx

National Learning Camp Lesson for Consolidation and Enhancement Camp

1. MORE ABOUT CELLS Grade 7 – Science Lesson 21

2. WORK PLAN for Today Short Review Lesson Purpose / Intention Lesson Language Practice Lesson Activity Lesson Conclusion

3. Component 1: SHORT REVIEW

4. Tell Me What You See

5. Students, reveal the back of the photo card.

6. REVIEW QUESTIONS: Q1. What is the biggest cell in the human body? The OVUM, the female egg, is the largest cell in the human body.

7. REVIEW QUESTIONS: Q2. What do you have to do so that you can see cells with a compound microscope? You should stain the specimen on the slide and focus carefully.

8. REVIEW QUESTIONS: Q3. Why do scientists say that cells are the basic structure of all living things? Scientists believe that all living things are made up of cells and that all cells come from other cells so that is why, they are the basic structure.

9. Component 2: LESSON PURPOSE / INTENTION

10. This lesson is about reading scientific texts and realizing how important reading is for learning and when answering questions. This lesson is about cells.

11. Objectives: Define ‘cell’. Narrate the history of cells. Appreciate the importance of cells to all living things.

12. Component 3: LESSON LANGUAGE PRACTICE

13. NUCLEUS CYTOPLASM MEMBRANE

14. Match these terms with its definition. Nucleus Cytoplasm Membrane Where the chemical reactions take place Regulates what goes in and out of the cell The control center

15. Match these terms with its definition. Nucleus Cytoplasm Membrane Where the chemical reactions take place Regulates what goes in and out of the cell The control center

16. Cell – the basic unit of life that can perform all activities associated with life. Cytoplasm – contains the organelles of the cell. Organelles are specialized parts of the cell that perform specific functions.

17. Nucleus – controls all the activities occurring inside the cell. Cell Membrane / Plasma Membrane – it controls the kind of substances that enters and exits the cells.

18. Component 4: LESSON ACTIVITY

19. “Did you know that every living thing is made of cells and that some tiny living things like bacteria are made up of only one cell but that human beings are

20. made up of 75 trillion cells. Most cells have three main parts, but plant cells are a bit different to animal cells. I will draw them for you.”

21. Compare these pictures:

22. QUESTIONS: Q1. Which of the two cell diagrams, A and B, is a plant cell? Diagram A is a plant cell.

23. Compare these pictures:

24. QUESTIONS: Q2. What is the name of the parts labelled X and Y in the two cells?

25. Compare these pictures:

26. QUESTIONS: Q2. What is the name of the parts labelled X and Y in the two cells? The part labeled X is the nucleus, and the other part labelled Y is the cytoplasm.

27. Compare these pictures:

28. QUESTIONS: Q3. Are the cells in our heart the same as the cells in our brain? Why or why not?

29. QUESTIONS: Q3. Are the cells in our heart the same as the cells in our brain? Why or why not? Not quite the same because cells in our body are specialized, so there are types that have different structures, sizes, shapes, and functions.

30. It’s Trivia Time!

31. Did you know that… The average human being is composed of around 100 trillion individual cells! It would take as many as 50 cells to cover the area of a dot on the letter “ i ”

32. QUESTIONS: Q1. What do the cells in the organisms of similar species have in common?

33. QUESTIONS: Q1. What do the cells in the organisms of similar species have in common? They have the same DNA.

34. Cell Structure for Genetic Control: NUCLEUS

35. QUESTIONS: Q2. Name three essential functions of the human cell.

36. Q2. Name three essential functions of the human cell. The functions of cells include to provide support and structure, take in nutrients fro m food, convert nutrients to energy, helps in reproduction and growth.

37. QUESTIONS: Q3. What are the structures inside the nucleus called and why are they so important?

38. QUESTIONS: Q3. What are the structures inside the nucleus called and why are they so important? The structures inside the nucleus are the chromosomes and they contain our genes which determine our characteristics, and this gets passed on when the cell makes copies of itself.

39. Component 5: LESSON CONCLUSION

40. QUESTIONS: Q1. The questions in component 4B were based on the text and diagram. Did you find these questions easier than those in component 4C? If so, why?

41. QUESTIONS: Q2. Has this lesson helped you to remember and or understand the basic structure of the cell? If so, how?