英语翻译Students read the story of Galileo’s first look through

英语翻译
Students read the story of Galileo’s first look through the telescope
(Resource Sheet 7) as an introduction to the activity.They then discuss:
• the nature of the new observations Galileo was able to make;
• his reaction to his discoveries;
• their reaction to a situation where they have ‘seen’ something they were
not able to see before.
Students prepare a piece of material suitable for examination under the
microscope — for example,soft stem of a geranium shoot,onion leaf,onion
skin from between the fleshy layers of the bulb,cheek cells,coloured picture
from a newspaper.They examine these materials using the naked eye,a hand
lens or magnifying glass,and a microscope.They record any detail they can
see.The observations could be recorded in a table like the one below
Students select a subject that can be observed using a telescope.They
then record the detail of the subject that is visible,using the naked eye,
binoculars and telescope.A table like the one shown here could be used to
record the results.
Students discuss both sets of observations.Discussion questions could
include:
• What were you able to see with the binoculars/hand lens that you could
not see with the naked eye?
• What were you able to see with the telescope/microscope that you could
not see with the naked eye?
• How has this increased your knowledge or understanding of the subject
(leaf,onion skin,stars) that you were looking at?
• How has this new understanding changed your ideas about ___ ( for
example,living things,the solar system)?
Students research other types of microscopes and telescopes and how
they are used.They prepare an information report that they share with the
class.Information could include:
• the name of the instrument;
• when it was developed;
• the nature of the information that can be collected using it;
• how and/or where this information is used;
• benefits derived from information collected
Additional learning
Students investigate ways in which computers have been used to enhance
observations made using telescopes or microscopes.They then explain how
this has further increased understanding of natural phenomena.
Students investigate the nature of information being collected through
the use of rockets and spacecraft.They describe ways in which this
information has been used.
Gathering information about student learning
Sources of information could include:
• students’ observations using the telescope or microscope;
• students’ contributions to discussions about the benefits of using
instruments to enhance observations;
• students’ selection and synthesis of information about instruments