Open the Table Functions Starter File on your computer, save a copy, and click "Run".
1 What is the name of the Table defined on line 5?
How many columns does it have? How many Rows?
2 What is the name of the Row defined on line 17?
3 What data type is red-circle defined as: a Number, String, Image, Boolean, Table, or Row?
Type red-circle into the Interactions Area. What do you get?
4 In the space provided on lines 19 and 20, add new definitions for two more Rows from this table.
5 Read the Contract on line 22.
What is the function’s name? Domain? Range?
6 Type is-red(blue-triangle) into the Interactions Area. What do you get?
Then use the function is-red, passing in a different row.
Explain what the is-red function does.
7 What other functions are defined in the starter file?
For each of the remaining functions, read the code and try to guess what it does before testing it out by passing in a Row.
8 What does is-polygon do?
9 What does lookup-name do?
10 What does is-triangle do?
11 Define two new functions: is-green and is-blue.
★ There is a hidden function called draw-shape. Try to use it. What is its Domain and Range? What does it do?
★ How else could we define is-polygon, without using the "polygon" column at all?
These materials were developed partly through support of the National Science Foundation, (awards 1042210, 1535276, 1648684, 1738598, 2031479, and 1501927). 
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