Lesson Notes By Weeks and Term v4 - SHS 1
ESSENTIALS FOR SURVIVAL
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ESSENTIALS FOR SURVIVAL
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Subject: General Science
Class: SHS 1
Term: 2nd Term
Week: 11
Grade code: 3.2.1.LI.2
Strand code: 2
Sub-strand code: 1
Content standard code: 3.2.1.CS.2
Indicator code: 3.2.1.LI.2
Theme: PROCESSES FOR LIVING
Subtheme: ESSENTIALS FOR SURVIVAL
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This lesson explores the fascinating biological machinery that allows us to move: our muscles. We will investigate how muscles, from their largest structure down to their microscopic components, work together to produce every action, from walking to the market to playing football, or even just smiling. Understanding how muscles function is essential for appreciating our own bodies, understanding the importance of nutrition and exercise for strength, and recognising how certain diseases can affect our ability to survive and interact with our environment.
Introduction (Engage) *(Teacher initiates a Think-Pair-Share activity)* "Look at the person next to you. Smile at them. Now, pick up your pen. How did your body do that? What is happening inside your arm to lift that pen? Let's think about the Black Stars playing football. What allows them to run, kick, and jump with such power? The answer lies in our muscles. Today, we will uncover the secrets of how these amazing tissues work." A. The 'Big Picture': Antagonistic Muscle Pairs Muscles are tissues that can contract (shorten) with force. A crucial rule to remember is: Muscles can only pull; they cannot push.
Because of this, they must work in pairs to create movement at a joint. These are called antagonistic pairs. One muscle contracts to pull a bone in one direction, while its partner relaxes. To move the bone back, the second muscle contracts and the first one relaxes.