Life of Fred PreAlgebra 1 with Biology Author:Stanley F. Schmidt PhD Life of Fred books provide a self teaching, self contained, comprehensive math program with answers included. The character Fred explains the need for math in everyday life. — Life of Fred: Pre-Algebra I With Biology covers: Definition of Life, Sets, Fractions, Germination of Seeds, Area of a Rectangle, Volume of a Cube, Ordinal Numbers, Diameter... more » and Circumference of a Circle, Definition of , 2% of 500, Four Ways Plants Make New Plants, d = rt, 20% Discount, the Five Kingdoms, Phyla, Classes, Orders, Families, Genera, Species, Your Brain, Conversion Factors, Where the Non-Water Mass of a Plant Comes FromPlants Dont Eat Dirt, Subsets of Sets, Digestion, Eyes, Negative Numbers, Dominant Genes, Genotypes, Phenotypes, Blood, Staying Alive, Solving Algebraic Equations, Volume of a Cylinder, Word Problems, Breathing, Chlorophyll vs. Hemoglobin vs. Hemocyanin, Avogadros Number, Stoichiometry, the Whole Numbers, a Proof that Division by Zero is Not Permitted, Bones, the Integumentary System, Epidermis and Dermis, Meiosis and Mitosis, Chromosomes, DNA, Alleles, Changing Your Phenotype.« less