Our first unit is all about finding connections about how the parts of the body work together as a system. Below, you can find links to review lessons, discussions, and vocabulary.
In this introduction, we started to explore how the parts of the body can work together to accomplish a task. First, the eyes see an object, then they send that signal to the brain, finally.. the brain sends the messages to our limbs and other parts to move and get the job done.
Many people know on some vague level that muscles are responsible for the body’s movement… but what *exactly* do the muscles do? As you discovered this week: the muscles work by pulling on bones at the joints. The muscles do this using strings called tendons.
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In this lesson, we created a working model of a human eye! Using that model, we discovered the basics of how our eyes work, and figured out some of the causes of vision problems.
We delved further into how our eyes work, exploring the function of the iris and pupil. Your child added a part to their eye model (the one they created last lesson) and experimented to see how the pupil affects vision.
We learned about the brain’s role in receiving information from the senses, processing that information, and then controlling the body's muscles to enable movement. We played a game in which we tested our reflexes. The fact that our reflexes always have a slight delay helped youto see that there are real pathways (nerves) on which messages from the brain have to travel.