Density

=Density= toc

Essential Question
Density is the destiny. Can you "prove" that an item is what you say it is?

Content Knowledge

 * ~ GA: Science (GPS) GA: Grade 8 Habits of the Mind ||
 * S8CS1. Students will explore the importance of curiosity, honesty, openness, and skepticism in science and will exhibit these traits in their own efforts to understand how the world works. ||
 * a. Understand the importance of-and keep-honest, clear, and accurate records in science. ||  ||
 * b. Understand that hypotheses can be valuable even if they turn out not to be completely accurate. ||  ||
 * S8CS2. Students will use standard safety practices for all classroom laboratory and field investigations. ||
 * a. Follow correct procedures for use of scientific apparatus. ||  ||
 * b. Demonstrate appropriate techniques in all laboratory situations. ||  ||
 * c. Follow correct protocol for identifying and reporting safety problems and violations. ||  ||
 * S8CS3. Students will have the computation and estimation skills necessary for analyzing data and following scientific explanations. ||
 * a. Analyze scientific data by using, interpreting, and comparing numbers in several equivalent forms, such as integers, fractions, decimals, and percents. ||  ||
 * b. Find the mean, median, and mode and use them to analyze a set of scientific data. ||  ||
 * c. Apply the metric system to scientific investigations that include metric to metric conversions (i.e., centimeters to meters). ||  ||
 * d. Decide what degree of precision is adequate, and round off appropriately. ||  ||
 * e. Address the relationship between accuracy and precision. ||  ||
 * f. Use ratios and proportions, including constant rates, in appropriate problems. ||  ||
 * S8CS4. Students will use tools and instruments for observing, measuring, and manipulating equipment and materials in scientific activities utilizing safe laboratory procedures. ||
 * a. Use appropriate technology to store and retrieve scientific information in topical, alphabetical, numerical, and keyword files, and create simple files. ||  ||
 * b. Use appropriate tools and units for measuring objects and/or substances. ||  ||
 * c. Learn and use standard safety practices when conducting scientific investigations. ||  ||
 * S8CS5. Students will use the ideas of system, model, change, and scale in exploring scientific and technological matters. ||
 * a. Observe and explain how parts can be related to other parts in a system such as the role of simple machines in complex machines. ||  ||
 * b. Understand that different models (such as physical replicas, pictures, and analogies) can be used to represent the same thing. ||  ||
 * S8CS6. Students will communicate scientific ideas and activities clearly. ||
 * a. Write clear, step-by-step instructions for conducting scientific investigations, operating a piece of equipment, or following a procedure. ||  ||
 * b. Write for scientific purposes incorporating information from a circle, bar, or line graph, data tables, diagrams, and symbols. ||  ||
 * c. Organize scientific information in appropriate tables, charts, and graphs, and identify relationships they reveal. ||  ||
 * S8CS7. Students will question scientific claims and arguments effectively. ||
 * a. Question claims based on vague attributions (such as "Leading doctors say...") or on statements made by people outside the area of their particular expertise. ||  ||
 * b. Identify the flaws of reasoning in arguments that are based on poorly designed research (e.g., facts intermingled with opinion, conclusions based on insufficient evidence). ||  ||
 * c. Question the value of arguments based on small samples of data, biased samples, or samples for which there was no control. ||  ||
 * d. Recognize that there may be more than one way to interpret a given set of findings. ||  ||
 * ~ GA: Science (GPS) GA: Grade 8 Reading Across Curriculum ||
 * c. Building vocabulary knowledge ||
 * Demonstrate an understanding of contextual vocabulary in various subjects. ||  ||
 * Use content vocabulary in writing and speaking. ||  ||
 * Explore understanding of new words found in subject area texts. ||  ||
 * d. Establishing context ||
 * Explore life experiences related to subject area content. ||  ||
 * Discuss in both writing and speaking how certain words are subject area related. ||  ||
 * Determine strategies for finding content and contextual meaning for unknown words. ||  ||
 * ~ GA: Science (GPS) GA: Grade 8 Physical Science ||
 * S8P1. Students will examine the scientific view of the nature of matter. ||
 * b. Describe the difference between pure substances (elements and compounds) and mixtures. ||  ||
 * c. Describe the movement of particles in solids, liquids, gases, and plasmas states. ||  ||
 * d. Distinguish between physical and chemical properties of matter as physical (i.e., density, melting point, boiling point) or chemical (i.e., reactivity, combustibility). ||  ||
 * e. Distinguish between changes in matter as physical (i.e., physical change) or chemical (development of a gas, formation of precipitate, and change in color). ||  ||
 * f. Recognize that there are more than 100 elements and some have similar properties as shown on the Periodic Table of Elements. ||

Background knowledge
[|SciLink-Properties of Matter activities]

[|SciLinks-Density activities]

[|SciLinks- Bouyancy activities]



Links
[|10 day density unit]