DENSITY AND BUOYANCY Will It Sink or Float? Presented by The Floaters

NGSS Science and Engineering Practices Asking questions Developing and using models Planning and carrying out investigations Analysis and interpreting Using math and computational thinking Engaging in argument from evidence

NGSS Cross Cutting Concepts Cause and effect Scale proportion and quantity Systems and models

NGSS Disciplinary Core Ideas PS3.B -- Conservation of energy and energy transfer Related Science DCI LS2-4 – The cycling of matter and flow of energy in an ecosystem - ESS2-C -- The role of Water in earth’s surface processes

Common Core Connections ELA Connections RI –HST 3 -- Analyze how a text makes connections among and distinctions between individuals, ideas, or events (e.g., through comparisons, analogies, or categories). WHST Conduct short research to answer questions that demonstrate an understanding of the subject under investigation.

Common Core Connections Math Connections Number and Quantity – Reason quantitatively and use units to solve problems MP.2 -- Reason abstractly and quantitatively. MP.4 -- Model with Mathematics MP.6 -- Attend to precision.

Interdisciplinary Connections Technology and Society Connections Design and use of models, Art and Social Science Connections Drawing images Review of historical event

ACCOMMODATIONS Reading the lesson to students Extended time Allow students to use notes Peer grouping Review Vocabulary bank/word wall Chunking Information Modified content/ assessments/activities and grading

LEARNING GOALS Density Describe how the concept of density relates to an object's mass and volume. Explain how objects of similar mass can have differing volume, and how objects of similar volume can have differing mass. Explain why changing an object's mass or volume does not affect its density (ie, understand density as an intensive property). Measure the volume of an object by observing the amount of fluid it displaces. Identify an unknown material by calculating its density and comparing to a table of known densities.

LEARNING GOALS Buoyancy Predict whether an object will sink or float when placed in a liquid Relate the buoyant force on an object to the weight of liquid it displaces Describe how the buoyant force is related to an object's relative density to the fluid Explain how an object that is more dense than water can be kept afloat by placing it on an object that is less dense than water

DAY 1 I Introduce Unit on Density, Buoyancy, and Water Displacement IIPre-Assessment – Demonstration: Marble vs Ping Pong Ball IIIIntroduce the key terms/vocabulary and connect to the activity through graphic organizer -- density, displacement, volume, buoyancy, energy, force, mass --

DAY 2 IV Teach -- Concepts of density, volume, mass, force, density formula (d=m/v) VPPT – Density Simulation (PhET) Questions and Class Discussion

DAY 3 VITeach Concept -- Archimedes Principle of Buoyancy Demonstration -- Plastic grams or iron sinkers in water VIIPPT – Buoyancy Simulation (PhET)

DAY 4 VIIIDensity and Buoyancy Game IXArticle – The Sinking of the Titanic Questions / Class Discussion

DAY 5 XEngineering Design Challenge Aluminum Foil Boat – Water Displacement Activity

DAY 6 XIPost-Assessment – Performance Based Demonstration/Presentation of Marble/Ping Pong Ball