The Human Body
Science lessons for grade 1
To learn science is to learn about life, because all physical aspects of life are governed by the laws of science. Here we provide lessons on the various areas of science that typically appear in both national and international syllabi at Grade 1 level.
The human body
The human body is made up of different parts that have different functions. Look at the labelled diagram below to understand more about the basic parts of the human body.
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Your face has different parts, as shown in the image above.
You have two hands, and on each hand, there are five fingers. You can do activities such as painting, using your arms, hands and fingers. You have two feet also, and on each foot, there are five toes. You can walk, run and jump with your legs, feet and toes.
The five senses
You have five senses. The five sense organs are your eyes, nose, tongue, ears and skin. The five senses are sight, hearing, smell, taste, and touch.
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You see with your eyes. Through the use of your eyes, you learn how things look. For example, using the computer. Your eyes can identify about 10 million different colours.
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Your ears let you hear sounds.A healthy young person has a hearing range of 20 to 20,000 hertz. As humans get older, their hearing abilities get worse.
Your ears help you to learn how things sound. Sounds can be loud like an airplane taking off. Sounds can also be soft, like the whispering of a friend.
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You smell with your nose. Your nose helps you to know how things smell. Though humans’ capacity to smell is not as good as that of animals, it is still very sharp. We can identify thousands of different smells. Some things smell good, while there are things that smell really bad.
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You taste with your tongue. It helps you to know how food tastes. The tongue can recognize a variety of tastes such as sour, sweet, salty and bitter. Our tongue has taste buds that are sensory organs that let us experience different tastes.
Lemons – sour
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Honey – sweet
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Bitter Gourd – bitter
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Chips – salty
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You touch things with your skin. Your skin helps you to know how things feel. It is the largest organ in the body, and has receptors that sense touch.
Things can feel either soft or hard.
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They can be either smooth or rough.
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