Life of Fred - Decimals and Percents by Stanley F. Schmidt, Ph.D.
The idea behind Life of Fred is that if students have an enjoyable experience and have fun doing their math, they will remember it and use it and have a good taste in their math about the whole subject. The sub-title on each of his math books is "As Serious As it Needs to Be". And that is just the point: math doesn't need to be horrid and dry. This is math-just as serious as it needs to be-and I can tell you from my child's smiles and chuckles, that's not very serious at all! This book covers the second half of the introduction to pre-algebra.
