CB2b Growth B2.5 Describe growth in Students should work in Students use a microscope to Show students a block organisms, including: small groups to list as look at prepared slides of of steel, or some steel (a) cell division and many examples as they specialised human cells. car parts such as differentiation in animals can remember of Display on the board a list of screws, and a car (or … different kinds of cell in the specialised cells on the image if not available). the human body. They slides, but not in the order that B2.7 Demonstrate an should then add any the slides are labelled. You Suggest that the understanding of the use of details they remember may need to indicate where to objects could be used to percentiles charts to about the cells, such as look for some of these in the model unspecialised and monitor growth where they are found, tissues, for example ciliated specialised cells, by using the steel to what they do, and what and other epithelial cells line B2.6 Explain the importance of is special about them the edge of a tissue. represent an cell differentiation in the unspecialised cell, while development of specialised Adaptations of cells in slides the steel car parts cells suggested: red blood cells are represent 'specialised' red because they contain cells. haemoglobin that combines with oxygen for transport Digital resource: Specialised cells video around the body; muscle cells contain proteins in the cytoplasm that allow the cell to Discuss a percentile contract; neurones have a long growth chart and how a fibre that carries electrical data set is split into signals around the body; fat percentiles. cells store large amounts of fat in droplets in the cytoplasm; a Digital resource: sperm cell has a tail that helps Interpreting growth it move through the female curves presentation reproductive system to reach the egg for fertilisation; an egg cell has a large amount of food in the cytoplasm to provide
CB2b Growth B2.5 B2.7 B2.6 Describe growth in organisms, including: (a) cell division and differentiation in animals … Demonstrate an understanding of the use of percentiles charts to monitor growth Explain the importance of cell differentiation in the development of specialised cells Students should work in small groups to list as many examples as they can remember of different kinds of cell in the human body. They should then add any details they remember about the cells, such as where they are found, what they do, and what is special about them Students use a microscope to look at prepared slides of specialised human cells. Display on the board a list of the specialised cells on the slides, but not in the order that the slides are labelled. You may need to indicate where to look for some of these in the tissues, for example ciliated and other epithelial cells line the edge of a tissue. Adaptations of cells in slides suggested: red blood cells are red because they contain haemoglobin that combines with oxygen for transport around the body; muscle cells contain proteins in the cytoplasm that allow the cell to contract; neurones have a long fibre that carries electrical signals around the body; fat cells store large amounts of fat in droplets in the cytoplasm; a sperm cell has a tail that helps it move through the female reproductive system to reach the egg for fertilisation; an egg cell has a large amount of food in the cytoplasm to provide Show students a block of steel, or some steel car parts such as screws, and a car (or image if not available). Suggest that the objects could be used to model unspecialised and specialised cells, by using the steel to represent an unspecialised cell, while the steel car parts represent 'specialised' cells. Digital resource: Specialised cells video Discuss a percentile growth chart and how a data set is split into percentiles. Digital resource: Interpreting growth curves presentation
GCSE-9-1-Science-Term-2-detailed-planning-document.docx