UNIT PLAN LESSON ONE: CELL THEORY State Standards LS.2 The student will investigate and understand that all living things are composed of cells. Key concepts include c) development of cell theory; Objectives Students will be able to describe the three key points of the cell theory. Students will be able to identify and discuss the scientists whom contributed to the cell theory. Engage The wacky history of cell theory: http://www.youtube.com/watch?v=4OpBylwH9DU Have the cell theory displayed in the room (on the board). Explore Role Play: Have students break up into groups of six and each pick a scientist who contributed to the cell theory to pretend to be for this activity. Each student will do research on their chosen scientist and then debate who should receive the most credit and why. Have students quickly create a pie chart of percentages of credit that each scientist deserves. Still in groups have students create a timeline of the events contributing to the cell theory. Explain Quick Overview of cell theory and related events (just to make sure we are all on the same page). Elaborate Journal Prompts: A day in the life of the scientist you chose (specifically the day of the discovery/invention). Discuss the cell theory in your own (nonscientific) words. Evaluate Pie Chart: Present/Not Present Time Line Rubric: Needs Work Fair Good Dates Not present Some dates incorrect or missing All dates included, all correct Events Not present Some events incorrect or All events included, all missing correct Scientists Not present Some Scientists incorrect or missing All scientists included, all correct o Journal: Formative Assessment (Read, give feedback, promptly return) LESSON 2: PLANT AND ANIMAL CELLS State Standards LS.2 The student will investigate and understand that all living things are composed of cells. Key concepts include: a) Cell structure and organelles; b) Similarities and differences between plant and animal cells; Objectives Students will use observations to compare and contrast plant and animal cell. Students will be able to describe why differences are present. Students will compare cell organelles to the parts of a submarine. Engage The Cell Song: http://www.youtube.com/watch?v=rABKB5aS2Zg Explore I will have several stations set up around the room with representations of plant and animal cells that students will spend a few minutes comparing and contrasting each cell then move on to the next station. Students will keep a log of all observations. Station 1: Microscopes set up with each cell. Station 2: 8x10in pictures of each cell. Station 3: Jell-O molds of each cell (that well will eat after each station has been explored). I will then ask students to form small groups and discuss possible differences and why they think these differences exist. I will hand out sheets of blank paper for students to illustrate any differences they may have saw. I will also pass out the blank venn-diagram of plants and animals at this point and allow them to begin working on it. Explain I will go over the differences between plant and animal cell and give a brief description on the functions of the organelles. I will hand out copies of the organelle function card and instruct students to quiz each other when they finish any assignments early or during free time. I will have students get with a partner for the following (responses to be turned in): Finish venn-diagram of plant and animal cells. Discuss the following: Explain each difference: explain why different organelles (or different sizes/shapes of organelles) are needed for the survival of one organism but not the other (e.g. explain why a plant cell needs a cell wall and an animal cell does not)? Elaborate On-Your-Own Discussion: Compare the parts of a cell, and the functions of those parts to the different parts of a submarine. Refer students to http://www.onr.navy.mil/focus/blowballast/sub/wo rk1.htm to find out about parts of a submarine and how it works. (if there is no access to the internet print out the following as handouts) Evaluate Formative assessment of student logs and group discussions. Collaborative venn-diagram and reasons for differences discussion: Needs Work Fair Good Venn-Diagram: differences 0-1 correct differences listed 2-3 correct differences listed 4 or more correct differences listed Venn-Diagram: similarities 4-5 correct similarities listed 6-7 correct similarities listed 8 or more correct similarities listed Differences discussion 0-1 correct differences listed 2-3 correct differences listed 4 or more correct differences listed Rational for differences discussion No rational given Incomplete or scientifically irrelevant rationales given complete and scientifically relevant rationales given Evaluate continued On-your-own work: Needs Work Fair Good Functions of Organelles 0-2 correct functions listed 3-5 correct functions listed 6 or more correct functions listed Comparisons to parts of a submarine 0-2 reasonable comparisons listed 3-5 reasonable comparisons listed 6 or more reasonable comparisons listed LESSON 3: CELL DIVISION State Standards: LS.2 The student will investigate and understand that all living things are composed of cells. Key concepts include d) cell division. Objectives: Students will sequence the steps in the cell cycle, including the phases of mitosis. Engage: Have a colorful slide show of mitosis microscope slide pictures as students enter the room. Have students complete the KW sections of a KWL chart as slide show progresses. Explore: Have stations of microscopes set up around the classroom with pre-made slides of each phase of the cell cycle including mitosis. Each microscope will in chronological order according to the cell cycle and labeled. Have the students visit the microscopes in order, recording observations and/or questions in their scientific journals. After every student has had a chance to visit each microscope, have the students divide into groups and discuss their findings. Questions to think about: Describe what you think is going on in each stage. How did the cells on the slides progressively change? What do you think is the overall goal of the process depicted in this series of slides? Explain: Short Lecture containing the following: In eukaryotic cells, the cell cycle is an ordered set of events involving phases of cell growth, DNA replication, and division into two identical daughter cells. Nondividing cells are not considered to be in the cell cycle. The phases of the cell cycle, in order Have students complete L of the KWL chart. Elaborate: Writing Prompt- 1 page min: Students can choose one of the following- all require online research: Have students locate information on diseases that result from defects in the process of mitosis. Then, have them describe the changes that cause each disease. Have students locate information on environmental factors that alter the process of mitosis or its rate. Then, have them provide plausible reasons why this happens. Have students compare the process of mitosis in animal and plant cells, noting any differences (phragmoplasts, centrioles, cleavage furrows). Evaluate: Formatively assess group discussions (give suggestions, correct misconceptions) and journal entries (Read, give feedback, promptly return). Have students self-assess KWL charts Writing Prompt Rubric: Quality of information Citation Accuracy of description/reasoning/com parisons Use of logic in description/reasoning/com parisons Use of scientific language pertaining to mitosis Length Needs Work Info from a non-credible source missing Inaccurate Fair No logic used numerous logical explanations A few scientific Numerous words here and scientific there explanations pertaining to mitosis ½ page Full page No scientific language Less than ½ page Some accuracy, some inaccuracy Some logic used Good Info from a credible source Present Completely accurate