The bestselling Water Wow! series by Melissa & Doug is perfect for introducing young kids to writing and colouring. Each set includes water activated sheets and a chunky pen that you fill with water. Once the water dries, the sheet becomes blank and can be re-used. Great value for money and no-mess. No wonder Water Wow! is a bestseller.. This alphabet-themed book includes every letter of the alphabet (uppercase and lowercase) to trace, alongside pictures of familiar objects to illustrate each sound. There are empty lines for practice, too. The chunky-sized water pen is easy for kids to hold and stores neatly right in the front cover, perfect for travelling.