- With this tenth book of the series, Nine-o Flo, Not Dan remembered how ‘nines’ can be a challenge for Kiddos to learn. So Eric J. Carter got to work and teamed up to make it easier, giving the Kiddos something to count along the way. That ‘something’ keeps changing, but all the Mathamanimals team up and their friendship make it work in the end. Kiddos will always learn at their own pace, but all this fun and rhyme will make their success much easier. Enjoy!