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BW 7. Students should be able to describe respiration and photosynthesis as both chemical and biological processes; investigate factors that affect respiration and photosynthesis

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NOS. 2, 3, 5, 7, 10.

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Teaching Placement - Unit of learning 1 - 2nd year science - photosynthesis and respiration

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Helping make photosynthesis Relatable for students

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Helping make photosynthesis Relatable for students

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- Examples of photosynthesis in everyday life.

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Why Is Photosynthesis Important for All Organisms?

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There are many reasons why photosynthesis is important to humans, plants and animals, but the most important is the production of oxygen in the atmosphere. Without photosynthesis, the atmosphere would not have enough oxygen to support humans, animals and even plants, which also require oxygen.

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- Staying well
This involves the students understanding the importance of photosynthesis and the presence of plants in our world to allow us to be healthy and have clean air.
- Being creative
This LO involves creativity, when the students have to think of different ways to test the rate of photosynthesis and how it is affected by certain factors.
- Communicating
The students always have to engage in communication in the classroom environment. They are constantly sharing ideas and answering questions.

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Peer reviewed papers i used in my planning 

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Peer reviewed papers i used in my planning 

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- Something i struggled with on placement was making information and content relatable to students and making it engaging for them. This journal gave me more than enough ideas of how to link the topic to their prior knowledge to make it a more comfortable topic to engage in for them.

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Abstract
Three strategies for teaching and learning about photosynthesis are described and criticized on the grounds that none of them promotes understanding of photosynthesis as a carbohydrate‐producing process in a way which can be related to students' prior knowledge. The 'guided discovery' strategy, which currently predominates in classrooms, involves experimental procedures which frequently distract students from the crucial aspect, i.e., starch production, but leaves their prior understandings largely undisturbed. An 'element analysis' strategy and a 'meaning of plant food' strategy are also assessed.

Additional information

Notes on contributors

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Teaching and learning about photosynthesis. Part 1: An assessment in terms of students' prior knowledge

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Abstract Three strategies for teaching and learning about photosynthesis are described and criticized on the grounds that none of them promotes understanding of photosynthesis as a carbohydrate‐producing process in a way which can be related to students' prior knowledge.

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Distinguishing between the respiratory system and Respiration as a biochemical process

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Distinguishing between the respiratory system and Respiration as a biochemical process

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Something the students were getting confused with was why respiration was not got to do with breathing

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This paper describes research (carried out in schools) aimed at isolating and identifying the key concepts within the topics of gaseous exchange and respiration which children find difficult to learn. The procedures used included questionnaires, diagnostic tests, and interviews. The results of the study reveal that the cellular basis of respiration, the nature of respiration in plants, and the applications of concepts of physical science to biology, are all areas of knowledge which are poorly understood by pupils. The implications of the study for the improvement of the teaching of these topics in schools are discussed.

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This paper describes research (carried out in schools) aimed at isolating and identifying the key concepts within the topics of gaseous exchange and respiration which children find difficult to learn. The procedures used included questionnaires, diagnostic tests, and interviews.

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Visual simulation for students to see how the rate of photosynthesis is affected by Light intensity.

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Open Educational Resources / Open Source Physics @ Singapore

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Factors Affecting Photosynthesis JavaScript HTML5 Applet Simulation Model

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Easy to read resource for students to help them understand photosynthesis

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Tanveer Anjum Towsif/Shutterstock

Photosynthesis, in a nutshell, is the process of using water, carbon dioxide and sunlight to produce sugar. Plants and other photosynthetic organisms are called producers because they can make carbohydrates for energy without consuming other organisms. The process of photosynthesis requires specialized cellular structures called chloroplasts to capture energy from the sun and convert it into chemical energy.

The light-dependent reactions harness and transfer energy by splitting apart hydrogen and oxygen atoms. The electrons move through the electron transport chain where they are passed along a series of proteins to eventually make ATP, the energy used in the next stage of photosynthesis.

Light-independent reactions use the energy generated during the light-dependent reactions to make carbohydrates in a process called the Calvin cycle. One carbon molecule is added at a time. Energy keeps the cycle going to repeat the process and create sugar molecules containing six carbons.

In addition to one glucose molecule, C ₆H ₁₂O ₆, the reaction of 6H ₂O + 6CO ₂ also yields six oxygen molecules, or 6O ₂. Oxygen is a waste product of photosynthesis.

Water is taken up by the roots and transported to the leaves by specialized tissue called xylem. Because leaves have a protected coating to prevent drying out, carbon dioxide must enter through pores called stomata. Oxygen exits the plant via stomata.

Cellular respiration is the process of using the chemical energy stored in sugars. The reaction is the mirror image of photosynthesis: glucose + oxygen yields carbon dioxide + water. Like all living things, plants go through cellular respiration to obtain energy for growth and reproduction.

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Photosynthesis, in a nutshell, is the process of using water, carbon dioxide and sunlight to produce sugar.