4.1.3 Cells in animals and plants Spec ref. Summary of the Learning outcomes Suggested Opportunities to develop Opportunities to apply Self/peer assessment specification content timing scientific communication skills practical and enquiry Opportunities and What most candidates should (hours) skills resources be able to do Reference to past questions that indicate success An electron microscope 4.1.3.1 Describe the differences in 1 Use a variety of resources to Use online and printed Observation activity has a much higher magnification and research the differences materials to calculate materials: resolving than a resolution of light and between a light microscope the real of cells and microscope light microscope. This electron microscopes. and an electron microscope. structures. Limited to the means that it can be graticule differences in used to study cells in Explain how electron Use online materials to make a prepared slides magnification and much finer detail. An microscopy has increased display of cell images from a calculator. resolution. electron microscope understanding of light microscope and from an can magnify up to a organelles. electron microscope. MS 1a,1b, 1c, 2h million times (× 1000 000) or more, which is Calculate the magnification Write a newspaper article Carry out calculations much more than a light of a light microscope. entitled: involving magnification, ‘Microscope…..the microscope which has a best invention ever!’ where real size and image size useful magnification of Carry out calculations using pupils explain the significance ((HT only) including only about a thousand the formula: of the microscope and discuss numbers written in times (× 1000). what the world would be like if standard form). microscopes were never WS4.4 invented. Rearrange the equation to Use prefixes centi-, Calculate the real size of calculate image size or milli-, micro- and nano-. microscope images, and magnification. MS 1d, 2h convert units as appropriate. Convert values for the Make order of Rearrange the equation to units: cm, mm, µm and nm magnitude calculations. calculate a different unknown. Extension work: Use a microscope with graticule to measure
4.1.3 Cells in animals and plants Spec ref. Summary of the specification content Learning outcomes What most candidates should be able to do Suggested timing (hours) Opportunities to develop scientific communication skills Opportunities to apply practical and enquiry skills Self/peer assessment Opportunities and resources Reference to past questions that indicate success 4.1.3.1 An electron microscope has a much higher resolving than a light microscope. This means that it can be used to study cells in much finer detail. An electron microscope can magnify up to a million times (× 1000 000) or more, which is much more than a light microscope which has a useful magnification of only about a thousand times (× 1000). Describe the differences in magnification and resolution of light and electron microscopes. Explain how electron microscopy has increased understanding of organelles. Calculate the magnification of a light microscope. Carry out calculations using the formula: Rearrange the equation to calculate image size or magnification. Convert values for the units: cm, mm, µm and nm 1 Use a variety of resources to research the differences between a light microscope and an electron microscope. Use online materials to make a display of cell images from a light microscope and from an electron microscope. Write a newspaper article entitled: ‘Microscope…..the best invention ever!’ where pupils explain the significance of the microscope and discuss what the world would be like if microscopes were never invented. Calculate the real size of microscope images, and convert units as appropriate. Rearrange the equation to calculate a different unknown. Use online and printed materials to calculate the real of cells and structures. Limited to the differences in magnification and resolution. MS 1a,1b, 1c, 2h Carry out calculations involving magnification, real size and image size ((HT only) including numbers written in standard form). WS4.4 Use prefixes centi-, milli-, micro- and nano-. MS 1d, 2h Make order of magnitude calculations. Extension work: Use a microscope with graticule to measure Observation activity materials: microscope graticule prepared slides calculator.
AQA-8465-SOW-BBLOCK.DOCX