For his birthday, James’ family decided to open a savings account for him. He started with $50 and committed to adding $10 a week from his afterschool job teaching basketball to kindergartners. Use the Design Recipe to write a function savings that takes in the number of weeks since his birthday and calculates how much money he has saved.
Contract and Purpose Statement |
Every contract has three parts…
_______::______->______
_
Examples |
Write some examples, then circle and label what changes…
examples:
_______ (__) is ______________
_______ (__) is ______________
end
Definition |
Write the definition, giving variable names to all your input values…
fun _______(_____):
_________________
end
Use the Design Recipe to write a function moving that takes in the days and number of miles driven and returns the cost of renting a truck. The truck is $45 per day and each driven mile is 15¢.
Contract and Purpose Statement |
Every contract has three parts…
______::______________->______
_
Examples |
Write some examples, then circle and label what changes…
examples:
______ (______) is _______________________
______ (_______) is ________________________
end
Definition |
Write the definition, giving variable names to all your input values…
fun ______(___________):
____________________________
end
These materials were developed partly through support of the National Science Foundation, (awards 1042210, 1535276, 1648684, 1738598, 2031479, and 1501927). 
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