Snap! can be used to wait for a certain time before reporting anything. Snap! also allows us to do the converse: to report how long a program takes to finish. In the Sensing menu, you will see a command called reset timer and a reporter called timer:

Reset Timer Command

    Activate (tick-mark) the timer reporter and you should see a timer ticking away in the top left corner.  It's been ticking ever since you opened up Snap! , and counts in tenths of a second:
Timer ticking away

    We are going to be performing timing experiments in the following sections, so this timer will prove useful.  Add the following timing framework script into the space for Snap! scripts:

Timing Framework

    The script will reset the timer whenever the green flag is pressed. The sprite will then say Hello! for 1 second, and soon after that, the sprite will say the current time, less 1 second to account for how long the sprite said Hello!.  If we replace Hello! with a reporter, then the sprite will say the answer of the reporter, and one second later, how long the reporter took to generate the answer: this is the timing information that we need.  Save the script with the name TimingFramework.