Monday, October 16, 2006

Linearity as a Constant Additive Change

Students investigated two scenarios today:

the rolling rates of three balls (football, soccer and tennis) and
the pledge plans of three students walking to raise money

Students were asked to make predictions about future data and quickly decided that the consistent patterns found in our data sets allowed them to take 'short cuts' for forecasting. We came up with several observations:

1. If a graph shows a straight line or set of points that is lined up, the relationship is linear.
2. If the difference between consecutive values in a table is consistent for both variables, then the relationship is linear.
3. We can write equations for linear relationships that allow us to make good predictions for future data.

We will have test #3 on Wednesday or Thursday on the topic of solving equations.

Home Nugget #26
Assigned on Monday October 16, 2006
Due Tuesday October 17, 2006
In Moving Straight Ahead
Page 24 #1 a, b
#2 a, b, c, d
#3 a, b, c
Page 26 #6 a, b, c, d
Page 27 #10

Focus Correction Areas (FCAs)
3 points: One problem will be picked at random and graded for:

A. Questions answered in complete sentences
B. Graphs are labelled
C. Explanations make sense (Student has read the work aloud to ensure coherence)

1 point: All problems are attempted

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