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    2.  Logic Blocks: These blocks allow you to make decisions using true/false values. You can
                         compare values and use logical operations like AND, OR and NOT. Example:

                                Blocks                                          Functions

                                                     Represents  the  constant  value  true.  It  is  used  to  set  the

                                  true              Boolean  properties  of components  or assign  a condition
                                                     value to a variable.

                                                    Represents  the constant  value false. It is used  to  set  the
                                  false             Boolean properties of components or assign a variable to
                                                    represent a condition.

                     3.   Math Blocks: These blocks perform basic and advanced mathematical calculations. You
                         can add, subtract, multiply, divide and more. Example:

                                Blocks                                          Functions

                                                     This block  lets  you  display  numbers  in decimal  form and
                                                    can also show them  in other  formats, such as binary  or
                               decimal   0
                                                     hexadecimal.

                                                    This block compares two values to check if one is greater
                                   =
                                                    than, less than or equal to the other.

                     4.   Text Blocks: These blocks are used to work with words and characters. You can join,
                         split, change and compare text. Example:

                                Blocks                                          Functions

                                                     This string  can contain  any  characters  (letters,  numbers

                                                    or other special  characters).  On  App  Inventor  it  will be
                                                     considered a Text object.

                                                    Appends all of the inputs to make a single string. If there are
                                    join
                                                    no inputs, it returns an empty string.

                                                                                     Creating Apps with MIT App Inventor  123

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