Lesson%201%20Discussion

1
Lesson 1 Discussion

• Your ideas about what happens to materials when
  they decay

2
What happens to decaying materials?

• Your ideas
• 1.

• Your questions
• 1.

3
Lesson 2 Investigation

• Investigating Bread Molding

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Lesson 2 Activity 1

• Initial explanations, predictions, and planning

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Making Predictions

• Predicting mass changes
• What materials will gain and lose mass when
  mealworms grow and move?
• How are the mass changes connected with The
  Movement Question Where are atoms moving?
• Use arrows on the worksheet to show your ideas

• Predicting BTB changes
• How will mealworms growing and moving change BTB?
• How are the BTB changes connected to The Carbon
  Question What is happening to carbon atoms?
• Explain your ideas on the worksheet.
• How do you think that energy is changing from one
  form to another?
• Explain your ideas on the worksheet.

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Three Questions Poster
Question Rules to Follow Evidence to Look For
The Movement Question Where are atoms moving? Where are atoms moving from? Where are atoms going to? Atoms last forever in combustion and living systems All materials (solids, liquids, and gases) are made of atoms When materials change mass, atoms are moving When materials move, atoms are moving
The Carbon Question What is happening to carbon atoms? What molecules are carbon atoms in before the process? How are the atoms rearranged into new molecules? Carbon atoms are bound to other atoms in molecules Atoms can be rearranged to make new molecules The air has carbon atoms in CO2 Organic materials are made of molecules with carbon atoms Foods Fuels Living and dead plants and animals
The Energy Question What is happening to chemical energy? What forms of energy are involved? How is energy changing from one form to another? Energy lasts forever in combustion and living systems C-C and C-H bonds have more stored chemical energy than C-O and H-O bonds We can observe indicators of different forms of energy Organic materials with chemical energy Light Heat energy Motion
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Answering the questions for bread molding

• What are your ideas?
• The Movement Question Where atoms moving? (Where
  are atoms moving from? Where are atoms going
  to?)
• The Carbon Question What is happening to carbon
  atoms? (What molecules are carbon atoms in before
  the process? How are the atoms rearranged into
  new molecules?)
• The Energy Question What is happening to
  chemical energy? (What forms of energy are
  involved? How is energy changing from one form to
  another?)

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Planning the Investigation

• How will you measure mass changes?
• How will you observe changes in the color of BTB?

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Lesson 2 Activity 2

• Observations and explanations of bread molding

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Lets do the investigation!

• What mass changes do you observe?
• What changes in BTB do you observe?

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Possible BTB Colors
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Comparing Group Results

• Results for mass changes
• What patterns are there in measurements made by
  all the groups?
• Do the patterns match your predictions?

• Results for BTB changes
• What patterns are there in observations made by
  all the groups?
• Do the patterns match your predictions?

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BTB Results for Ms. Draytons Class
Day 1 Day 2
start BTB color end BTB color
blue yellow
blue yellow
blue yellow
blue yellow
blue yellow
blue yellow
How do your results compare with the results from
Ms. Draytons Class?
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Weight Results for Ms. Grintals Class
Initial mass bread and mold in petri dish (g) Final mass after 7 days (g) Change in mass after 1 week (g)
29.68 25.61 -4.07
23.51 20.75 -2.76
30.57 26.38 -4.19
29.26 25.38 -3.88
31.67 30.37 -1.30
32.18 31.36 -0.82
Average change in weight -2.63 Average change in weight -2.63 Average change in weight -2.63

• How do your results compare with the results for
  Ms. Grintals class?

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Explaining Group Results

• Explaining results for mass changes
• How are the mass changes connected with The
  Movement Question Where are atoms moving?
• What unanswered questions do you have?

• Explaining results for BTB changes
• How are the BTB changes connected to The Carbon
  Question What is happening to carbon atoms?
• What unanswered questions do you have?

• What did we learn about the Energy Question?
• What unanswered questions do you have?