NextGenPET Instructor Resources

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UPC A6 Video Clip 1: Video group discusses initial ideas question

The video group discusses observational evidence you would need to convince someone that particles of a liquid attract each other.

UPC A6 Video Clip 2: Video group summarizes observations and makes inferences about liquid particles

The video group fills out Table 1 and makes some inferences about the relative attractive forces between particles of water, ethanol, and hexane.

UPC A6 Video Clip 3: Video group answers making sense questions about liquid particles

The group previously observed that when they dragged a water droplet towards and touched another droplet, the two droplets seemed to attract each other. Here they draw on that observation to summarize their ideas about the attractive forces between liquid particles, and which liquid particles have the strongest attractive forces.

UPC A6 Video Clip 4: Video group answers prediction question about drop of food dye added to water

Two members of the group predict what will happen to the drop of food dye over time and also suggest an explanation.

UPC A6 Video Clip 5: Video group explains why dye moves differently in different temperature water

After the group observes that the dye diffuses much more quickly in the hotter water than the cooler water, they answer the making sense question: Provide an explanation to account for any differences in behavior of the dyes at different temperatures.

UPC A6 Video Clip 7: Video group decides what happens to mass of liquid in thermometer when warmed

The group discusses whether the mass of the liquid in the thermometer changes when the liquid is warmed.

UPC A6 Video Clip 8: Video group confused about why liquid volume increases when warmed

The group is struggling to understand in terms of particles why a liquid expands when warmed. They call over the instructor, who provides guidance.

UPC A6 Video Clip 9: Video group explains relative attractive forces between particles of water and methane

The group discusses the making sense question: Recall that methanol has a boiling point of 64.7 °C and water has a boiling point of 100 °C. What does that tell you about the attractive electrostatic forces between methanol particles and those between water particles?

UPC A6 Video Clip 10: Video group discusses Summarizing Question #3

Group discusses which (macroscopic and nanoscopic) properties change when a liquid is heated.

UPC A6 Video Clip 11: Class group presents Summarizing Question #2

A group presents its whiteboard to the class for SQ #2. Their diagram includes an error. A student mentions how it should be corrected. Students ask some more questions and the instructor helps the class understand the difference between macro and nano energy diagrams.

UPC A6 Video Clip 12: Class group presents Summarizing Question #3 Part 1

A group presents its whiteboard to the class for the first three properties mentioned in SQ #3. They claim that the volume doesn't change. A student in the class questions that claim and the instructor helps the class understand that volume does change when a liquid is heated.

UPC A6 Video Clip 13: Video group presents Summarizing Question #3 Part 2

The video group presents to the class its whiteboard for the last three properties mentioned in SQ #3.

UPC A6 Video Clip 14: Class group presents Summarizing Question #4

A group presents its whiteboard to the class for SQ #4 about how the strengths of particle attraction compare for two liquids, one that boils at 100 °C and one that boils at 70 °C.

UPC A6 Video Clip 15: Class group presents Summarizing Question #5

A group presents its whiteboard to the class for SQ #5, its latest model for the water can and air can demonstration.