Reflection: Real World Applications Why Does my Shadow Change? Day 2 - Section 4: Wrap Up


Using a Model Before Relating it to the Real World 

Having the students create a model and use it to investigate shadows before investigating them in the real world is beneficial in many ways.  One way is to provide them with practice creating and using models.  This is a skill that scientists use a lot to help them understand the world.  Using the model also allows them to observe changes that they cannot manipulate in the real world.  For example, students cannot move the sun closer and farther away.  By having them use a model prior to taking them outside to investigate shadows in the real world, they are also able to build an understanding of what to expect when they go outside.   Some students have never paid attention to their shadow before and have no idea how it change or why.  The model provides some background knowledge to work off of.  

Making sure students understand how the model is representative of the real world is very important.  One way I tried to reinforce this connection was by having them identify the time of day that each position of the light represents.  One the lab sheet, position 1 was early in the morning (between 6:00 and 8:00), position 2 was late morning (around 10:00 or 11:00), position 3 was in the middle of the day (between 12:00 and 1:00), position 4 is early afternoon (between 2:00 and 4:00), and position 5 is early evening around sunset (between 6:00 - 7:00).  An example of what one group thought for the times represented is in the picture below. 


  Using a Model Before Real World Investigation
  Real World Applications: Using a Model Before Real World Investigation
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Why Does my Shadow Change? Day 2

Unit 6: Earth's Place In Space
Lesson 6 of 9

Objective: SWBAT use the model they created to investigate how the position of the sun affects their shadow.

Big Idea: Students will use the model they created in the day 1 lesson to investigate how shadows change as position and distance of the sun change.

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9 teachers like this lesson
Science, Earth and Space Science, space, Planets
  60 minutes
model picture 4
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