To make the mats I used green poster board and red, white, and green felt. For the seeds I used small, white beans and spray painted half of them black. I made eight of these watermelon mats.
To practice counting, the child places a number card on a mat and then places the correct number of seeds on the watermelon,
To practice addition, the child places an addition card on a mat and then uses the black and white seeds to solve the addition problem.