We should begin by talking about values and data types.
Data types are the different kinds of data we can use and store.
We have:
Numbers: 9
Strings: Computer
Boolean Values: True/False
We can also talk about operators. A good start for operators is to talk about mathmatical operators, such as addition (+) and multiplication (*)
In lively, we can evaluate any block of text by highlighting it and pressing CMD/CTRL + D and print the result by highlighting it and pressing CMD/CTRL + P.
Try that below on the following VALUES and OPERATORS:
3 + 4
3 * 4
3 + 4 * 5
(3 + 4) * 5
'hello' + ' ' + 'world!'
Notice that the strings 'hello', ' ' and 'world!' can be added together, but that the following doesn't work:
'team' - 'ea'