Science at key stage 3    (Year 7)

• identify, locate and describe the functions of a range of plant and human organs
• make suggestions about the structure of living things from microscope evidence
• state that living things are made up of different types of tissue, which is made up from very small units

• prepare a specimen for microscopic observation, and correctly focus the microscope to view it
• describe how the objects appear under low magnification
• make careful drawings of the objects viewed

• describe some earlier ideas about the structure of living things
• identify key points using an appropriate technique
• explain how evidence from microscope observations led to new ideas
• state that living things are made of microscopic units called cells
• draw the cells observed
• identify observable similarities and differences between cells
• make a generalisation about the differences, eg in size, presence of thick outer wall, between plant and animal cells

• relate the parts of model cells to diagrams and pictures of plant and animal cells
• describe what plant and animal cells have in common
• identify that plant cells have a cell wall and vacuole and may have chloroplasts, but that animal cells do not

• classify cells as plant or animal in origin, giving reasons, and label parts of cells

• explain that different types of cell can be found in plants and animals, and that these cells carry out specialised functions
• identify specialised features in different types of cell, and relate these to the function of a cell
• find and present relevant information on a particular cell type

• name some examples of tissues from plants and humans
• relate the different parts of a model to the cells and tissues making up an organ in a living organism

• explain that growth of living things occurs by cells dividing to make new cells, and these cells increasing in size
• represent the process of cell division as a sequence that begins with division of the nucleus

• explain the process of fertilisation in flowering plants as the transfer of information within nuclei from parents to offspring
• distinguish between the processes of pollination and fertilisation in flowering plants
• make drawings to illustrate the sequence of events during fertilisation in plants

• identify a suitable question
• explain why they needed to use a particular number of pollen grains, eg 20 grains at each concentration
• make accurate observations and record these appropriately
• draw an appropriate graph of data collected
• use the graph to identify trends and make generalisations
• compare graphs produced by different groups, and use these to evaluate the strength of evidence

• identify different types of cell and describe their roles
• explain that growth occurs as a result of cell division and increase in size