Remember: A variable can count. Each time, it takes its old value and adds one.
Questions
1
🚦Will a counter count up if you start at zero, add one each time?
YesNo
2
Which rule is a bug in a counter?
🙈forget the old value➕add one to the old value🚦start at zero, add one each time
3
Which rule does not make a counter count up?
put zero in the box every time➕add one to the old value🔁take out, add one, put back
4
Which rule does not make a counter count up?
🧮set stars to stars plus one🚦start at zero, add one each time🗑️empty the box each time
5
Which rule does not make a counter count up?
🔁take out, add one, put backput one in the box every time🚦start at zero, add one each time
6
Which rule makes a variable count up?
🙈forget the old value🔁take out, add one, put backput one in the box every time
7
Which rule makes a variable count up?
🗑️empty the box each timeput one in the box every time➕add one to the old value
8
Which rule makes a variable count up?
🧮set stars to stars plus one🙈forget the old valueput one in the box every time
9
Which rule does not make a counter count up?
🙈forget the old value🚦start at zero, add one each time➕add one to the old value
10
Which rule is a bug in a counter?
put one in the box every time🔁take out, add one, put back🧮set stars to stars plus one
11
Which rule is a bug in a counter?
🔁take out, add one, put back➕add one to the old valueput zero in the box every time
12
Which rule is a bug in a counter?
🗑️empty the box each time➕add one to the old value🧮set stars to stars plus one
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