Activity I: Constant or Linear Plant Growth (Grade Levels: 36)
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Constant or Linear Plant Growth 
Continuously Changing Growth 
Surface Area of a Leaf 
Career Connections 
More Math Concepts
Objectives:
 Complete a table of values.
 Graph the values given in a table.
Standards
 Standard 1 Problem Solving
 Standard 2 Communication
 Standard 3 Reasoning
 Standard 4 Connections
 Standard 5 Number and Number Relationships
 Standard 8 Patterns and Functions
 Standard 9 Algebra
Constant or Linear Growth
1. Let’s simulate an imaginary plant’s growth. Assume that this plant grows at a constant rate. The length of the stem increases by 11 millimeters each day.
a.Make a table of the plant’s height over a 10day period.
b.Make a graph of the plant growth over time in days.
c.Predict the plant’s growth over a 100 day period.
2. Consider another plant that has a height of 30 millimeters when it is first measured and suppose it grows continuously at a rate of 8 millimeters per day.
a.Make a table of the plant’s height over a 10day period.
b.Make a graph of the plant heights.
c.Predict the plant’s height on the 100^{th} day after it was first measured.
d.Do you feel that the plant growth in these two problems is realistic? Explain.
