Plan an investigation to illustrate how changing the mass affects a balanced system 0307.11.1

Links verified 12/27/2014

1. Finding the Mass of an Object - tutorial on using a triple-beam balance which includes questions to answer
2. Platform Scales Addition - weigh several items and find the sum in hundredths of a gram
3. Platform Scales Subtraction - weigh several items and find the difference in hundredths of a gram
4. Transparency Master - use this high quality picture of a block of metal on a triple beam balance as a review for your students
5. Using a Platform Scale - practice using scales like the one in a doctor's office, five Gregs will drop on the scale, waiting to be weighed, see how quickly you can weigh them

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