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Lesson 5 Biological sciences LIVING THINGS HAVE NEEDS Teacher notes Science inquiry focus: What happens if plant’s needs are not met? Science Inquiry Skills: • Questioning and predicting QP • Planning and conducting PC • Processing and analysing data and information PA • Communicating C Science as a Human Endeavour: • Students make observations about the growth of their radish and investigate who is responsible for taking care of plants. Technology/Engineering/Mathematics links: • using mathematical language to compare the growth of radishes and to instruct adding more or less water to the plant in the interactive activity • participating in an interactive activity online Background information • Plants include trees, flowers, herbs, bushes, grasses, fruit-bearing plants, vines and ferns. • All plants have five basic needs that differ slightly from animals. Plants need air, sunlight, water, soil and space to grow and reproduce. • Unlike animals, plants create their own food through photosynthesis. Plants take carbon dioxide from the air, the sunlight and the water and convert these nutrients into glucose, which the plant uses to grow and produce oxygen, which it emits back into the environment. • When a plant’s needs are not met, it becomes sick just like an animal. Its physical appearance changes. Its leaves may wilt, turn yellow or shed, or it may develop spots of rot. • Different plants require different amounts of air, water, sunlight, soil and space. This is because plants have adapted to grow in different conditions. Some plants can survive without soil at all, such as air plants, and some share the same space, such as vines around a tree in a rainforest. It is important when choosing plants to check their individual needs. Assessment focus: • Use the student’s drawing and their two sentences to assess their observation and recording skills. Resources • Access to the radishes planted in Lesson 4 • Blank piece of paper for each student © R.I.C. Publications Low resolution display copy 20 Science: A STEM APPROACH YEAR F 978-1-925431-93-3 R.I.C. Publications® – www.ricpublications.com.au
Biological sciences LIVING THINGS HAVE NEEDS Lesson 5 Lesson plan Introduction: 1. As a class, revise the radish growing experiment from Lesson 4. What plant did we grow? What are the five basic needs of plants? How did we make sure the plant’s needs were met? C Development: 2. Select the radish that grew the most and the radish that grew the least. As a class, model a sentence to compare the two radishes. For example, Student A’s radish is taller than Student B’s radish. Write the words 'taller', 'shorter', 'bigger' and 'smaller' on the whiteboard. 3. On a piece of paper, students record their observations by drawing an image of their radish plant. Students then write two sentences to compare the size of their radish growth to other students. For example, 'My radish was taller than ...' and 'My radish was shorter than ...' Note: These sentence starters may be written on the whiteboard for students to complete if required. PC PA Differentiation • Less capable students may orally compare the size of their radish to that of other students and have an adult complete the sentences. • More capable students should be encouraged to write a sentence about whether they think their radish had its needs met and why. 4. In pairs, students tell their partner if they think their radish had its needs met or not, giving reference to the size of the plant. For example, I think my plant did have its needs met as it grew tall and had leaves, or I think my plant did not have its needs met because it only grew a little. P A 5. Using a think-pair-share, students answer the questions What happens to plants that don’t have their needs met? Do they get sick? Q P Reflection: 6. As a class, discuss who is responsible for taking care of plants in different places. Who was responsible for taking care of your radish? Who is responsible for taking care of the plants in the garden at home, at school or in the bushland? Q P 7. What needs do all of the plants in the garden at home, at school and in the bushland have and what happens if their needs are not met? PA C © R.I.C. Publications Low resolution display copy R.I.C. Publications® – www.ricpublications.com.au 978-1-925431-93-3 YEAR F Science: A STEM APPROACH 21
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