Lesson 1 Instructional Materials What do you OBSERVE about this image? State what you SEE, not what you think.
Lesson 1 Instructional Materials
Lesson 1 Instructional Materials
Lesson 1 Instructional Materials Before you go. I really understand now. It was interesting to learn that I have a question about (Please include the question) I would like to learn more about I m still confused about I found it hard to learn because
Lesson 2 Instructional Materials Your Name: mitosis I know this word and can explain it to a classmate I've heard of this word, but I'm not sure what it means I have never heard of this word before in my life chromosome interphase prophase metaphase anaphase telophase cytokinesis
Lesson 2 Instructional Materials Cell Division: MITOSIS What s the most important part of the cell that has to be perfectly copied? The DNA in the nucleus Here are the names of the phases Interphase Prophase Metaphase Anaphase Telophase Cytokinesis WHY WOULD CELLS DIVIDE? Growth Repair Reproduction Fluid Processes can be broken down into stages For example, JUMPING Mitosis Animation What s the cell s goal? To create a perfect copy of itself In Cell Division, or MITOSIS, there are several stages But remember, it is a fluid process (like jumping). It doesn t stop along the way, but these are the stages that happen during the process. What s happening tomorrow? Playdough model of mitosis
Lesson 2 Instructional Materials Before you go. I really understand now. It was interesting to learn that I have a question about I would like to learn more about This is the original cell. Notice the parts. The two cells at the end should be IDENTICAL to this original cell. Chromosomes line up in the MIDDLE of the nucleus Metaphase Middle I m still confused about I found it hard to learn because Modeling Mitosis DOUBLING! GROWTH! (still not mitosis yet) Chromosomes move AWAY from each other towards opposite sides of the nucleus Anaphase Away Look at your materials White dough= cytoplasm Green dough= nucleus white string= cellular membrane orange string = nuclear membrane beads= organelles CHROMOSOMES CONDENSE! NUCLEAR MEMBRANE DISSOLVES! SPINDLE FIBERS FORM! Nuclear membranes reform around the TWO new nuclei. Telophase Two
Lesson 2 Instructional Materials The cell splits into two daughter cells! We did it!! Look! See how each of these is IDENTICAL to the original? ORIGINAL CELL And look! We re back to the beginning!! Time Lapse Mitosis in an animal cell animation animal vs bacteria growth rate
Lesson 2 Instructional Materials MITOSIS Let's Divide! I Stage What it looks like What's happening P M A T C
Lesson 3 Instructional Materials Onion Root Tip Mitosis Lab 7th grade Life Science Name In this lab you will be identifying and counting cells in different stages of the cell cycle. Before we begin: Think about what you know about the cell cycle and the stages involved. Make a PREDICTION: What stage do you think there will be more of? Why? Part 1 Use the picture of the onion cells. Identify the stages of cell division based on the chromosomes you see. Work with your group, and record the following information: Total number of cells on the page Cells in Interphase Cells in Prophase Cells in Metaphase Cells in Anaphase Cells in Telophase
Lesson 3 Instructional Materials Part 2 Calculate the percentage: Number of cells in one stage/ total number of cells = X 100 = % Percentage of cells in interphase Percentage of cells in prophase Percentage of cells in metaphase Percentage of cells in anaphase Percentage of cells in telophase Part 3 To be completed in class tomorrow Onion root cells can complete a cell cycle in about 17 hours. Here are some growth rates for different types of Human tissues: Cells inside the small intestine- 2-4 days Cells in the lungs - Skin cells- 8 days 10-30 days Some of our fastest cells- Some of our slowest-
Questions for you to consider: Why doesn't mitosis happen over and over and over? What are some ways that cells might know its time to stop? Talk with your group and come up with at least 3 different ways you think cell growth could be controlled. 1. Lesson 3 Instructional Materials 2. 3. Many modern cancer treatments target quickly reproducing cells. What do you think this means? What body cells that we talked about in class today may also be unintentionally effected by the cancer treatment, as a side effect?
Lesson 3 Instructional Materials
Lesson 4 Instructional Materials 7 th grade Science Mitosis Assessment This assessment is checking to see that you understand the stages of cell division and mitosis. Choose ONE assessment from the list below. QUIZ Letter to your nervous friend cell What happens while a Skinned Knee is healing? Labeled Diagram Description of each choice: Quiz- 14 questions including a short answer (written) part. Letter to your nervous friend cell- You are a cell who just completed cell division. Write a letter to your friend (another cell) who has never gone through mitosis, and tell about your experience. Be sure to include all of the stages and details about what happens at each stage. Skinned Knee When your knee heals, your skin cells are dividing to make more of themselves to fill in the space. Write a description of cell division and explain the stages, including details about what happens in each stage. Labeled Diagram- Draw a diagram of the cell process. Include all of the stages and label each. Include at least one sentence describing what is happening at each stage.