Grade 2 Science Unit: 3 Lesson: 3

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Grade 2 ScienceUnit 3 Lesson 3

• Investigating the
• Effects of Energy

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TEKS 2.6Force, motion and energy The student
knows that forces cause change and energy exists
in many forms. The student is expected to

• TEKS 2.6A
• INVESTIGATE THE EFFECTS on an object by
  increasing or decreasing amounts of light, heat,
  and sound energy such as how the color of an
  object appears differently in dimmer light or how
  heat melts butter.

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• Here is what you need to be sure to teach!!
• (found on page 1 of this unit)

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• Give the students a list of 5 things to touch.
• file cabinet
• desk top
• metal leg of a chair
• plastic chair
• carpet

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With you writing on the board, have the students
list these items from coolest to warmest.

• List the items from coolest to warmest
• 1. file cabinet
• 2. metal leg of chair
• 3. desk top
• 4. plastic chair
• 5. carpet

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Next, have the students record this information
in their journals.
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Next, come up with a class (accurate) definition
for the word HEAT.a form of energy

• Consider letting the students draw 2 or 3
  pictures of items that produce heat.

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• This is a teacher demo.
• be sure to ask how the lamp is similar to or
  different from the sun
• dont forget to have the students predict (using
  pictures and words) what will happen when the
  tray is placed under the lamp

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This is how the lab might look.You need a 100W
bulb!! It takes TIME!!
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Journal Entry IdeaStudents record lab findings
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What Happens When I Add HEAT??
Suggestion If you use a lamp in your room, it
takes TIME for the butter and chips to melt. So,
start the lab, go on with your day and record
results periodically during the day on the board.
Have students record the chart at the end of the
day during science.
Minutes Under the Lamp ICE BUTTER Chocolate Chips





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Then record the room temp , frig and freezer
info in the same fashion
Time _at_ room temp ICE BUTTER Chocolate Chip




Time in frig ICE BUTTER Chocolate Chip


Time in freezer ICE BUTTER Chocolate Chip


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• This is the lab sheet for this activity. You
  can certainly use the sheet as isor.

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Consider this..

• Model on the board and have students copy!!!

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Since we suggested that you delete the lesson
where the students draw pictures, then you will
need to delete the GALLERY WALK.

• So, we suggest you find pictures of different
  sources of light energy.

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We now know there are different sources of
light. Now we will explore what happens to an
object when the amount of light shining on it is
increased or decreased.
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Needed Materials
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How about this as an idea for a center???

• How can increasing and decreasing light energy
  affect objects?

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A Listening Walk
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Sound Cups
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The same items can be used for both styles of
sound cups.
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We tried to incorporate all the aspects of the
performance indicator within the lessons
presented today. So, if you are running short
of time, you dont have to do this.
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Thank you for ALL you do for SCIENCEand the
kids of MISD!!!