6172RB Science a STEM approach Year 2 low res watermark
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Lesson 5<br />
Biological sciences<br />
GROWING AND CHANGING<br />
Teacher notes<br />
<strong>Science</strong> inquiry focus:<br />
How do the offspring of frogs grow and change?<br />
<strong>Science</strong> Inquiry Skills:<br />
• Questioning and predicting QP<br />
• Planning and conducting PC<br />
• Processing and analysing data and information PA<br />
• Evaluating E<br />
• Communicating C<br />
<strong>Science</strong> as a Human Endeavour:<br />
• Students act like scientists when they make observations, ask<br />
questions and describe the growth of an animal.<br />
Technology/Engineering/Mathematics links:<br />
• viewing an interactive video online<br />
• entering a URL add<strong>res</strong>s correctly in order to download a file<br />
• <strong>res</strong>earching online<br />
Background information<br />
• Some animals, like the frog, undergo a series of big<br />
changes as they become adults. The offspring do not<br />
<strong>res</strong>emble the adults.<br />
• Frogs start their lives as eggs which are laid in water. The<br />
eggs then hatch into tadpoles which live underwater and<br />
have gills but no legs. They swim using their tail. Then they<br />
form back then front legs. Once they have grown all four<br />
legs they are known as froglets. They still have a tail but<br />
they breathe with lungs. Finally, the tail and gills disappear<br />
and the froglet becomes a frog. It leaves the water to live<br />
on the land.<br />
• This lesson is to highlight that some living things do not<br />
look the same as an offspring as they do as an adult. They<br />
do, however, have predictable stages of development and<br />
observable changes. It is not meant to go too in depth into<br />
life cycles as this is covered in <strong>Year</strong> 4.<br />
Assessment focus:<br />
• Use page 20 as a formative<br />
assessment of the student’s<br />
ability to identify that a frog<br />
goes through a series of<br />
predictable changes as it<br />
becomes an adult frog and<br />
looks different at each stage.<br />
• Observe student discussions<br />
in Step 5 to gauge their ability<br />
to evaluate their <strong>res</strong>ults and<br />
find information to clarify the<br />
answers.<br />
Resources<br />
• <strong>Science</strong> up close video<br />
about amphibians at<br />
<br />
• Access to computers/<br />
computer lab (the file types<br />
do not play on iPads®)<br />
• Life cycle of a frog file<br />
download at <br />
• Sufficient copies of page 20<br />
for students<br />
© R.I.C. Publications<br />
Low <strong>res</strong>olution display copy<br />
18 <strong>Science</strong>:<br />
A <strong>STEM</strong> APPROACH<br />
YEAR<br />
2<br />
978-1-925431-95-7 R.I.C. Publications® – www.ricpublications.com.au
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