The Mass of Ice and Water Data

Use these data for the mass of ice and water to make a histogram of the 7th grade results .

Test Preparation

Please know the importance of THEORIES and EVIDENCE as they relate to science and scientists. There will be a couple of related questions on Monday's test. Re-read pages 9 thru 13 in the Lab Manual if you need to brush up . . . Forgot your Lab Manual? Visit the Thayer website and downlaod a copy!

Mass of Ice and Water Data Now Available

The data collected by all sections is now in. Go to the Thayer website to get your copy of the "Ice to Water" data. You will need this data to create a histogram for your lab notebook. Be sure to print copies of the column titled "Delta Mass".

More Test Preparation!

Be sure to review page 26 in your Lab Manual--you should know how to read these scales and others like these. You should also know how to read the EAB--see Quiz 6 for examples (problems 1,2 & 3). If you lost that quiz, you can find some more examples in the Downloads section on the Thayer website.

Remember: tens, ones and tenths come from the right hand pan. Hundredths and thousandths come from the reading you take from the scale on the right hand arm of the balance. 100, 200 and 500 represent MILLIGRAMS, NOT grams!

Test Preparation

You can do well on Monday's test:

• Study!! Pay particular attention to past quizzes and measuring assessments
  
• Make sure you know: course expectations, safety procedures, the format of a lab report, ratios and proportions, mass is not weight, how to read scales, accuracy vs. precision, how to set up your Lab Notebook, how to use balances
• Expectations (what to bring to class)
  
• General lab safety (books, work area, floor space)
• Define: ratio, proportion, mass, precision, accuracy
• Be able to: solve proportions, cross multiply & isolate the variable, use correct units, convert from cm to m, and from m to cm and/or Km
• Know the strengths and weaknesses of the three types of balances
  

EAB, TBB & Top Loader Reproducibilty Data now available!

All of the data collected to determine balance reproducibility is now available on the Thayer website. You must have your user name and password to access this information. It is available in the Downloads section of the site. A quick look at the document should help you understand how we determine the reliability of our balances.

Week of Monday, November 17:

This week we finish collecting the data (penny and stopper) which will help us determine the reproducibility of the balances we will be using in the lab. By Tuesday afternoon we should have determined the reliability of each of the three different types of balances in the lab. This information will be posted as soon as it becomes available, and it should be recorded in your Lab Manual on page 36. We also began the inquiry process related to the questions on page 37 in the Lab Manual. As of Monday afternoon, the Orange section had already collected data in an attempt to answer the first question: "Does mass change when ice melts?". By the end of the week we should begin a discussion on the use of Histograms in presenting and analyzing data.

Remember that there will be a short, single period, term TEST given on Monday, November 24th.