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Activity 1.1: Systems and Scale Unit Pretest (20 min)

  • pencils (1 per student, for paper version)
  • computer with an Internet connection (1 per student, for online version)

Activity 1.2: Expressing Ideas about Ethanol Burning (20 min)

  • Sticky notes (1 per student)
  • ethanol, 95% (10-15 ml)
  • lighter (1)
  • Petri dish, glass (1)
  • Petri dish, plastic (1)

Activity 2.3: Zooming Into Air (30 min)

  • piece of paper (1 person student)

Activity 2.4: Atoms and Molecules Quiz and Discussion (30 min)

  • pencils (1 per student)

Activity 2.5: Using a Digital Balance and BTB (30 min)

  • BTB, blue (1 cup per group of four students)
  • clear plastic cups (1 per group of four students)
  • digital balance (1 per group of four students)
  • paper clips (10 per group of four students)
  • safety glasses (1 per group of four students)
  • straws (1 per group of four students)

Activity 3.1: Predictions about Soda Water Fizzing (20 min)

  • Petri dish, plastic (1 per class)
  • soda water (1 cup per class)

Activity 3.2: Observing Soda Water Fizzing (40 min)

  • BTB, blue (less than 1 cup per group of four students)
  • digital balance (1 per group of four students)
  • Petri dish, plastic (2 per group of four students)
  • sealable, 9.5-Cup container (1 per group of four students)
  • soda water (less than 1 cup per group of four students)
  • (Optional) Molecular modeling kits
  • (From previous activity) 3.1 Predictions Tool for Soda Water Fizzing

Activity 3.3: Evidence-Based Arguments for Soda Water Fizzing (50 min)

Activity 3.4: Molecular Models for Soda Water Fizzing (40 min)

  • molecular model kit (1 per pair of students)

Activity 3.5: Explaining Soda Water Fizzing (20 min)

Activity 4.1: Predictions about Ethanol Burning (30 min)

  • (From previous activity) Students’ ideas and questions they shared in Activity 1.2 Expressing Ideas Tool for Ethanol Burning
  • (From previous 1.2 Expressing Ideas Tool for Ethanol Burning
  • Video or demonstration of ethanol burning

Activity 4.2: Observing Ethanol Burning (30 min)

  • BTB, blue (less than 1 cup per group)
  • (optional) BTB, yellow (less than 1 cup per group)
  • digital balance (1 per group of four students)
  • ethanol, 95% (10-15 ml per group)
  • large plastic container (1 per group of four students)
  • lighter (1 per group of four students)
  • Petri dish, glass (1 per group of four students)
  • Petri dish, plastic (1 per group of four students)
  • safety glasses (1 per student)
  • (Optional) Molecular modeling kits
  • (From previous activity) 4.1 Predictions Tool for Ethanol Burning with student answers
Activity 4.3: Evidence-Based Arguments for Ethanol Burning (50 min)

Activity 4.4: Molecular Models for Ethanol Burning (50 min)

  • molecular model kit (1 per pair of students)
  • scissors (1 per pair of students)
  • twist ties (at least 12 per pair of students)

Activity 4.5: Explaining Ethanol Burning (40 min)

(Optional) Activity 5.1: Molecular Modeling for Methane Burning (40 min)

  • molecular modeling kit (1 per pair of students)
  • scissors (1 per pair of students)
  • twist ties (12 per pair of students)

Activity 5.3: Preparing for Future Units – Organic vs. Inorganic (40 min)

Activity 5.5: Systems and Scale Unit Posttest (20 min)

  • pencils (1 per student)
  • computer with an Internet connection (1 per student, for online version)

Materials Available on the Website:

Activity 1.1: Systems and Scale Unit Pretest (20 min)

Activity 1.2: Expressing Ideas about Ethanol Burning (40 min)

Activity 2.1: Powers of Ten Video and Discussion (30 min)

(Optional) Activity 2.2: From Big to Small (30 min)

Activity 2.3: Zooming into Air (30 min)

Activity 2.4: Atoms and Molecules Quiz and Discussion (30 min)

Activity 2.5: Using a Digital Balance and BTB (30 min)

Activity 3.1: Predictions about Soda Water Fizzing (20 min)

Activity 3.2: Observing Soda Water Fizzing (30 min)

Activity 3.3: Evidence-Based Arguments for Soda Water Fizzing (50 min)

Activity 3.4: Molecular Models for Soda Water Fizzing (40 min)

Activity 3.5: Explaining Soda Water Fizzing (40 min)

Activity 4.1: Predictions about Ethanol Burning (30 min)

Activity 4.2: Observing Ethanol Burning (30 min)

Activity 4.3: Evidence-Based Arguments for Ethanol Burning (50 min)

Activity 4.4: Molecular Models for Ethanol Burning (50 min)

Activity 4.5: Explaining Ethanol Burning (40 min)

Activity 5.1: Molecular Modeling for Methane Burning (40 min)

(Optional) Activity 5.2: Explaining Methane Burning (40 min)

Activity 5.3: Preparing for Future Units – Organic vs. Inorganic (40 min)

Activity 5.4: Explaining Other Examples of Combustion (50 min)

Activity 5.5: Systems and Scale Unit Posttest (20 min)