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Celebrate April Fool’s Day with the April Fool’s Day Demonstration Kit. Four discrepant event demonstrations engage students’ natural curiosity using the element of surprise. Encourage students to suggest explanations for these spectacles.

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Celebrate April Fool’s Day with the unexpected! Four discrepant event demonstrations engage students’ natural curiosity using the element of surprise.
• An open jar of water is covered by a laminated card and turned upside-down. Air pressure holds the card in place. Remove the card and the water stays in the jar!
• Surely the balloon will pop when a wooden skewer is poked through it. Not so!
• The liquid in the U-shaped tube is not level! Have fun as students make suggestions to explain the phenomenon and try to even things out.
• Two identical balloons, inflated to different volumes, are connected. What will happen when the pathway is opened and air is allowed to flow between the balloons? The outcome is surprising… but should it be?

Contains enough materials to perform each demonstration seven times.

Concepts:
Surface tension, air pressure, cohesion, polymers, cross-linking, density, pressure of fluids, observation, minimum energy state.
Time Required: One full class period


Correlation to Next Generation Science Standards (NGSS)

Science & Engineering Practices

Analyzing and interpreting data
Using mathematics and computational thinking
Constructing explanations and designing solutions

Disciplinary Core Ideas

MS-PS1.A: Structure and Properties of Matter
HS-PS1.A: Structure and Properties of Matter
HS-PS2.B: Types of Interactions

Crosscutting Concepts

Patterns
Structure and function
Stability and change

Performance Expectations

MS-PS1-1. Develop models to describe the atomic composition of simple molecules and extended structures.
HS-PS1-3. Plan and conduct an investigation to gather evidence to compare the structure of substances at the bulk scale to infer the strength of electrical forces between particles.