Lesson Materials

Per Class

• 10 magnetic marbles in a 6-qt container with a lid (you can reuse the storage bins from the investigation).

• timer (or wall clock)

• class consensus model poster(s) from Lesson 7

• sticky notes

• markers

Per Group

• 1 sealed plastic baggie of ice (taken from the freezer when ready to use)

• 1 empty 2-L soda bottle (including cap) with bottom cut off (from the previous lesson)

• 1 small container or cup of warm tap water

• 1 magnifying glass

Per Student

• Science notebook

  • Observing the Behavior of Water Droplets

  • Progress Tracker

  • Elements Map and Results

Prep

Review 

• Lesson Plan

• Slides

Prepare 

• Be sure you have materials ready to add the following words to the Word Catcher Wall:  condensation; condensation/boiling point. Do not post this/these word(s) on the wall until after your class has developed a shared understanding of its/their meaning.

Water Droplet Investigation

• Group size: 3

• Advance preparation: Watch https://youtu.be/d1-MLTgiqPI to see how to prepare the ice bags and how students will drape them over the top of the bottles.

• Make one ice bag for each group of 3 students: Place 8–10 ice cubes in a 1 qt plastic baggie, squeeze out the air before sealing, and keep frozen until class. If you have more than one class, make 2 sets of bags so you can rotate a set back to the freezer between classes.

• Setup: Place the following in a 6-qt storage bin for each group of students (for easy transportation):

  • 1 sealed plastic baggie of ice (taken from the freezer when ready to use)

  • 1 empty 2-L soda bottle (including cap) with bottom cut off (from the previous lesson)

  • 1 small container or cup of warm tap water

  • 1 magnifying glass

  • Storage/reuse: Collect the materials bin after students complete the investigation.

• Marble Demonstration

  • Advance preparation: Watch https://youtu.be/72MhytbmsZ0 to see examples of the motions you will demonstrate with the magnetic marbles and plastic containers.

  • Have superglue handy to repair any magnetic marbles that break during this activity. Such repairs take only a few seconds.

  • Setup: 10 magnetic marbles in a 6-qt container with a lid (you can reuse the storage bins from the investigation).

  • Storage/reuse: All materials can be stored indefinitely and reused.