Cleavage Process in Zygotes: Characteristics and Phases
Cleavage is a vital process in embryonic development, involving rapid and synchronous cell divisions to form the offspring's body. This process differs from normal cell division, leading to the creation of blastula. Learn about the characteristics of cleavage, somatic cell cycle phases, and the unique features of nuclear and cytoplasmic mass ratios during cleavage. Understand how the shape of the embryo remains unchanged and the significance of mid-blastula transition in amphibians for DNA synthesis.
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Presentation Transcript
Before lesson: Photocopy a small periodic table for each student and the timeline sheet for those who need it. Starter: They need to stick the periodic table in their books and label metals, non- metals halogens, alkali metals, noble gases and the transition metals. Song for them to enjoy Main: Feedback from starter They need to draw a timeline in their books (there is a sheet for those who need it). They can use the chromebooks to complete the timeline including the key ideas. There are slides for key aspects if you want to go through prior to the task. Plenary Think-pair -share questions to summarise
Development of the Periodic Table Do now: Collect a chromebook and log in.
Development of the Periodic Table Able to explain the steps involved in the development of the periodic table Understand how the periodic table is arranged Explain the advantages and mistakes in Mendeleev s arrangement
Development of the Periodic Table Task Research the history of the periodic table to complete the timeline on your handout and answer the questions in your books For each scientist - describe their contribution to the development of the periodic table, including what they found out and how this affected the arrangement of the elements. You have 30 minutes
Development of the Periodic Table Task Compare your research with other people in the room. Add any extra information to your timeline/answers
Development of the Periodic Table Exam question Explain how Mendeleev persuaded any doubters that his periodic table really was a useful tool for understanding the chemical elements. (3 marks)
Development of the Periodic Table Exam question Explain how Mendeleev persuaded any doubters that his periodic table really was a useful tool for understanding the chemical elements. (3 marks)
