The 4th Grade Math 1 Base Center Kit comes with 1 LP Base, 6 curriculum packs with 12 cards each, 864 questions and answers that cover: Whole Numbers, Fractions, Decimals and Percents, Algebra Concepts, Geometry & Measurement, and Probability & Statistics. It is packaged in a clear vinyl bag for easy storage and organization. This kit is great for home use or situations where there are only one or two students working at the same time. The curriculum has been carefully crafted to meet the needs of State and National Math Standards. See the individual titles and slide shows for detailed descriptions and previews of curriculum.