# ALEX Lesson Plan

## Density Sink or Float Lab

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This lesson provided by:
 Author: Virginia Warren System: Mobile County School: Breitling Elementary School The event this resource created for: ASTA
General Lesson Information
 Lesson Plan ID: 34555 Title: Density Sink or Float Lab Overview/Annotation: This lesson will allow students to experiment with different objects to predict and explain the results of their experiments on the objects as they relate to density. Through this experiment, students will be able to understand the cause and effect relationship to explain the objects sinking or floating. This lesson results from a collaboration between the Alabama State Department of Education and ASTA.
Associated Standards and Objectives
Content Standard(s):
 Science SC2015 (2015) Grade: 5 5 ) Construct explanations from observations to determine how the density of an object affects whether the object sinks or floats when placed in a liquid. NAEP Framework NAEP Statement:: P4.3: Matter exists in several different states; the most common states are solid, liquid, and gas. Each state of matter has unique properties. For instance, gases are easily compressed while solids and liquids are not. The shape of a solid is independent of its container; liquids and gases take the shape of their containers. Unpacked Content Scientific And Engineering Practices:Constructing Explanations and Designing SolutionsCrosscutting Concepts: Cause and EffectDisciplinary Core Idea: Matter and Its InteractionsEvidence Of Student Attainment:Students: Use data from observations to explain how the density of an object affects whether an object sinks or floats when placed in a liquid, like water.Teacher Vocabulary:density volume buoyancy data observe explain sink float massKnowledge:Students know: Objects are made of many tiny particles to small to be seen. Some objects have many tiny particles compacted close together that causes the object to sink while other objects the same size may float because their tiny particles are less compact. Some objects of the same size sink when others float. Buoyancy is the ability of an object to float.Skills:Students are able to: Predict the results of different types of objects being placed in water. Test the objects and communicate the results. Use appropriate tools (Scale, balance, ruler, or graduated cylinder) to measure the weight, mass, and/volume of an object. Construct an explanation to describe the observed relationship between density and the ability of an object to sink or float. Identify the evidence that supports the explanation that density affects the ability of an object to sink or float.Understanding:Students understand that: Cause and effect relationships are routinely identified and used to explain phenomenon like sinking and floating.AMSTI Resources:AMSTI Module: Matter and Interactions Alabama Alternate Achievement Standards AAS Standard: SCI.AAS.5.5- Observe how the density of an object affects whether the object sinks or floats when placed in a liquid; predict whether an object will float or sink in water.

Local/National Standards:

Primary Learning Objective(s):

The students will be able to predict the results of different types of objects being placed in water.

The students will be able to construct an explanation to describe the observed relationship between density and the ability of an object to sink or float.

The student will be able to identify the evidence that supports the explanation that density affects the ability of an object to sink or float.