1. John is fencing his yard, which measures 16 meters long. If each fence panel is 4 meters wide, how many panels does he have to buy to fence one side of his yard? How many fence posts does he have to buy to install 4 panels?
2. Sissi arranged 14 gel pens neatly side by side. Aiden wants to put a tiny googly eye between every two gel pens. How many googly eyes does he need?
3. Sissi and Aiden are having a contest to climb stairs in a 6 storied building. They go from the first floor all the way to the sixth non stop. If there are 20 steps between two floors, how many steps does each of them climb?