Students trace the head of their lollipops before and after they lick it 100 times. Simple but fun activity for 100th day. Prints 3 to a page to save paper but can edit if you want to remove some to make it larger for smaller kids.
I created this to begin the unit of measuring area in square units after unsuccessfully searching all over for something that was closely aligned to the 2nd grade TEKS. The standard specifically states measuring rectangular shapes in square units.